{"id":600,"date":"2020-02-21T15:49:03","date_gmt":"2020-02-21T07:49:03","guid":{"rendered":"https:\/\/aichh.com\/?p=600"},"modified":"2020-02-21T15:50:52","modified_gmt":"2020-02-21T07:50:52","slug":"systemd-service-%e4%b8%ad%e6%96%87%e6%89%8b%e5%86%8c","status":"publish","type":"post","link":"https:\/\/aichh.com\/600.html","title":{"rendered":"systemd.service \u4e2d\u6587\u624b\u518c"},"content":{"rendered":"<!--wp-compress-html--><!--wp-compress-html no compression--><h3>\u7248\u6743\u58f0\u660e<\/h3>\n<p>\u672c\u6587\u8bd1\u8005\u662f\u4e00\u4f4d\u5f00\u6e90\u7406\u5ff5\u7684\u575a\u5b9a\u652f\u6301\u8005\uff0c\u6240\u4ee5\u672c\u6587\u867d\u7136\u4e0d\u662f\u8f6f\u4ef6\uff0c\u4f46\u662f\u9075\u7167\u5f00\u6e90\u7684\u7cbe\u795e\u53d1\u5e03\u3002<\/p>\n<ul>\n<li>\u65e0\u62c5\u4fdd\uff1a\u672c\u6587\u8bd1\u8005\u4e0d\u4fdd\u8bc1\u8bd1\u6587\u5185\u5bb9\u51c6\u786e\u65e0\u8bef\uff0c\u4ea6\u4e0d\u627f\u62c5\u4efb\u4f55\u7531\u4e8e\u4f7f\u7528\u6b64\u6587\u6863\u6240\u5bfc\u81f4\u7684\u635f\u5931\u3002<\/li>\n<li>\u81ea\u7531\u4f7f\u7528\uff1a\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u81ea\u7531\u7684<u>\u9605\u8bfb\/\u94fe\u63a5\/\u6253\u5370<\/u>\u6b64\u6587\u6863\uff0c\u65e0\u9700\u4efb\u4f55\u9644\u52a0\u6761\u4ef6\u3002<\/li>\n<li>\u540d\u8a89\u6743\uff1a\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u81ea\u7531\u7684<u>\u8f6c\u8f7d\/\u5f15\u7528\/\u518d\u521b\u4f5c<\/u>\u6b64\u6587\u6863\uff0c\u4f46\u5fc5\u987b\u4fdd\u7559\u8bd1\u8005\u7f72\u540d\u5e76\u6ce8\u660e\u51fa\u5904\u3002<\/li>\n<\/ul>\n<h3>\u5176\u4ed6\u4f5c\u54c1<\/h3>\n<p>\u672c\u6587\u8bd1\u8005\u5341\u5206\u613f\u610f\u4e0e\u4ed6\u4eba\u5206\u4eab\u52b3\u52a8\u6210\u679c\uff0c\u5982\u679c\u4f60\u5bf9\u6211\u7684\u5176\u4ed6\u7ffb\u8bd1\u4f5c\u54c1\u6216\u8005\u6280\u672f\u6587\u7ae0\u6709\u5174\u8da3\uff0c\u53ef\u4ee5\u5728\u5982\u4e0b\u4f4d\u7f6e\u67e5\u770b\u73b0\u6709\u7684\u4f5c\u54c1\u96c6\uff1a<\/p>\n<ul>\n<li><a href=\"http:\/\/www.jinbuguo.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u91d1\u6b65\u56fd\u4f5c\u54c1\u96c6<\/a>\u00a0[\u00a0<a href=\"http:\/\/www.jinbuguo.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/www.jinbuguo.com\/<\/a>\u00a0]<\/li>\n<\/ul>\n<div class=\"refentry\">\n<div class=\"refnamediv\">\n<h2>\u540d\u79f0<\/h2>\n<p>systemd.service \u2014 \u670d\u52a1\u5355\u5143\u914d\u7f6e<\/p>\n<\/div>\n<div class=\"refsynopsisdiv\">\n<h2>\u5927\u7eb2<\/h2>\n<p><code class=\"filename\"><em class=\"replaceable\"><code>service<\/code><\/em>.service<\/code><\/p>\n<\/div>\n<div class=\"refsect1\">\n<p><a name=\"id-1.5\"><\/a><\/p>\n<h2 id=\"\u63cf\u8ff0\">\u63cf\u8ff0<\/h2>\n<p>\u4ee5 \"<code class=\"literal\">.service<\/code>\" \u4e3a\u540e\u7f00\u7684\u5355\u5143\u6587\u4ef6\uff0c \u5c01\u88c5\u4e86\u4e00\u4e2a\u88ab systemd \u76d1\u89c6\u4e0e\u63a7\u5236\u7684\u8fdb\u7a0b\u3002<\/p>\n<p>\u672c\u624b\u518c\u5217\u51fa\u4e86\u6240\u6709\u4e13\u7528\u4e8e\u6b64\u7c7b\u5355\u5143\u7684 \u914d\u7f6e\u9009\u9879(\u4ea6\u79f0\"\u914d\u7f6e\u6307\u4ee4\"\u6216\"\u5355\u5143\u5c5e\u6027\")\u3002\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.unit.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.unit<\/span>(5)<\/span><\/a>\u00a0\u4e2d\u63cf\u8ff0\u4e86\u901a\u7528\u4e8e\u6240\u6709\u5355\u5143\u7c7b\u578b\u7684\u914d\u7f6e\u9009\u9879\uff0c \u5b83\u4eec\u4f4d\u4e8e \"<code class=\"literal\">[Unit]<\/code>\" \u4e0e \"<code class=\"literal\">[Install]<\/code>\" \u5c0f\u8282\u3002 \u6b64\u7c7b\u5355\u5143\u4e13\u7528\u7684\u914d\u7f6e\u9009\u9879 \u4f4d\u4e8e \"<code class=\"literal\">[Service]<\/code>\" \u5c0f\u8282\u3002<\/p>\n<p>\u5176\u4ed6\u53ef\u7528\u7684\u9009\u9879\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.exec.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.exec<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c(\u5b9a\u4e49\u4e86\u547d\u4ee4\u7684\u6267\u884c\u73af\u5883)\uff0c \u4ee5\u53ca\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c(\u5b9a\u4e49\u4e86\u5982\u4f55\u7ed3\u675f\u8fdb\u7a0b)\uff0c \u4ee5\u53ca\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.resource-control.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.resource-control<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c(\u5b9a\u4e49\u4e86\u8fdb\u7a0b\u7684 \u8d44\u6e90\u63a7\u5236)\u3002<\/p>\n<p>\u5982\u679c\u8981\u6c42\u542f\u52a8\u6216\u505c\u6b62\u7684\u67d0\u4e2a\u5355\u5143\u6587\u4ef6 \u4e0d\u5b58\u5728\uff0c systemd \u5c06\u4f1a\u5bfb\u627e\u540c\u540d\u7684SysV\u521d\u59cb\u5316\u811a\u672c(\u53bb\u6389\u00a0<code class=\"filename\">.service<\/code>\u00a0\u540e\u7f00)\uff0c \u5e76\u6839\u636e\u90a3\u4e2a\u540c\u540d\u811a\u672c\uff0c \u52a8\u6001\u7684\u521b\u5efa\u4e00\u4e2a service \u5355\u5143\u3002 \u8fd9\u4e3b\u8981\u7528\u4e8e\u4e0e\u4f20\u7edf\u7684SysV\u517c\u5bb9(\u4e0d\u80fd\u4fdd\u8bc1100%\u517c\u5bb9)\u3002 \u66f4\u591a\u4e0eSysV\u7684\u517c\u5bb9\u6027\u53ef\u53c2\u89c1\u00a0<a class=\"ulink\" href=\"https:\/\/www.freedesktop.org\/wiki\/Software\/systemd\/Incompatibilities\" target=\"_top\" rel=\"noopener noreferrer\">Incompatibilities with SysV<\/a>\u00a0\u6587\u6863\u3002<\/p>\n<\/div>\n<div class=\"refsect1\">\n<p><a name=\"id-1.6\"><\/a><\/p>\n<h2 id=\"\u670d\u52a1\u6a21\u677f\">\u670d\u52a1\u6a21\u677f<\/h2>\n<p><span class=\"command\"><strong>systemd<\/strong><\/span>\u00a0\u670d\u52a1\u53ef\u4ee5\u901a\u8fc7 \"<code class=\"literal\"><em class=\"replaceable\"><code>service<\/code><\/em>@<em class=\"replaceable\"><code>argument<\/code><\/em>.service<\/code>\" \u8bed\u6cd5\u63a5\u53d7\u4e00\u4e2a\u5355\u72ec\u7684\u53c2\u6570\u3002\u8fd9\u6837\u7684\u670d\u52a1\u88ab\u79f0\u4e3a\"\u5b9e\u4f8b\u5316\"\u670d\u52a1\uff0c\u800c\u4e0d\u5e26\u00a0<em class=\"replaceable\"><code>argument<\/code><\/em>\u00a0\u53c2\u6570\u7684\u670d\u52a1\u5355\u5143\u5b9a\u4e49\u88ab\u79f0\u4e3a\"\u6a21\u677f\"\u3002\u4f8b\u5982\u00a0<code class=\"filename\">dhcpcd@.service<\/code>\u00a0\u670d\u52a1\u6a21\u677f\u63a5\u53d7\u4e00\u4e2a\u7f51\u7edc\u63a5\u53e3\u53c2\u6570\u4e4b\u540e\uff0c \u5c31\u751f\u6210\u4e86\u4e00\u4e2a\u5b9e\u4f8b\u5316\u670d\u52a1\u3002\u5728\u670d\u52a1\u5355\u5143\u6a21\u677f\u6587\u4ef6\u5185\u90e8\uff0c \u53ef\u4ee5\u901a\u8fc7 %-specifiers \u5f15\u7528\u53c2\u6570(\u4e5f\u79f0\u4e3a\"\u5b9e\u4f8b\u540d\")\u3002\u8be6\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.unit.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.unit<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u3002<\/p>\n<\/div>\n<div class=\"refsect1\">\n<p><a name=\"id-1.7\"><\/a><\/p>\n<h2 id=\"\u81ea\u52a8\u4f9d\u8d56\">\u81ea\u52a8\u4f9d\u8d56<\/h2>\n<div class=\"refsect2\">\n<p><a name=\"id-1.7.2\"><\/a><\/p>\n<h3 id=\"\u9690\u542b\u4f9d\u8d56\">\u9690\u542b\u4f9d\u8d56<\/h3>\n<p>\u4e0b\u5217\u4f9d\u8d56\u5173\u7cfb\u662f\u81ea\u52a8\u9690\u542b\u7684\uff1a<\/p>\n<div class=\"itemizedlist\">\n<ul class=\"itemizedlist\">\n<li class=\"listitem\">\u8bbe\u7f6e\u4e86\u00a0<code class=\"varname\">Type=dbus<\/code>\u00a0\u7684\u670d\u52a1\u4f1a\u81ea\u52a8\u6dfb\u52a0\u00a0<code class=\"varname\">Requires=dbus.socket<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">After=dbus.socket<\/code>\u00a0\u4f9d\u8d56\u3002<\/li>\n<li class=\"listitem\">\u57fa\u4e8e\u5957\u63a5\u5b57\u542f\u52a8\u7684\u670d\u52a1\u4f1a\u81ea\u52a8\u6dfb\u52a0\u5bf9\u5173\u8054\u7684\u00a0<code class=\"filename\">.socket<\/code>\u00a0\u5355\u5143\u7684\u00a0<code class=\"varname\">After=<\/code>\u00a0\u4f9d\u8d56\u3002 \u670d\u52a1\u5355\u5143\u8fd8\u4f1a\u4e3a\u6240\u6709\u5728\u00a0<code class=\"varname\">Sockets=<\/code>\u00a0\u4e2d\u5217\u51fa\u7684\u00a0<code class=\"filename\">.socket<\/code>\u00a0\u5355\u5143\u81ea\u52a8\u6dfb\u52a0\u00a0<code class=\"varname\">Wants=<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">After=<\/code>\u00a0\u4f9d\u8d56\u3002<\/li>\n<\/ul>\n<\/div>\n<p>\u8fd8\u6709\u4e00\u4e9b \u5176\u4ed6\u4f9d\u8d56\u5173\u7cfb\u662f\u7531\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.exec.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.exec<\/span>(5)<\/span><\/a>\u00a0\u4e0e\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.resource-control.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.resource-control<\/span>(5)<\/span><\/a>\u00a0\u4e2d\u7684\u67d0\u4e9b\u8d44\u6e90\u9650\u5236\u9009\u9879\u81ea\u52a8\u9690\u542b\u6dfb\u52a0\u7684\u3002<\/p>\n<\/div>\n<div class=\"refsect2\">\n<p><a name=\"id-1.7.3\"><\/a><\/p>\n<h3 id=\"\u9ed8\u8ba4\u4f9d\u8d56\">\u9ed8\u8ba4\u4f9d\u8d56<\/h3>\n<p>\u9664\u975e\u660e\u786e\u8bbe\u7f6e\u4e86\u00a0<code class=\"varname\">DefaultDependencies=no<\/code>\u00a0\uff0c\u5426\u5219 service \u5355\u5143\u5c06\u4f1a\u81ea\u52a8\u6dfb\u52a0\u4e0b\u5217\u4f9d\u8d56\u5173\u7cfb\uff1a<\/p>\n<div class=\"itemizedlist\">\n<ul class=\"itemizedlist\">\n<li class=\"listitem\"><code class=\"varname\">Requires=sysinit.target<\/code>,\u00a0<code class=\"varname\">After=sysinit.target<\/code>,\u00a0<code class=\"varname\">After=basic.target<\/code>,\u00a0<code class=\"varname\">Conflicts=shutdown.target<\/code>,\u00a0<code class=\"varname\">Before=shutdown.target<\/code>\u00a0\u3002 \u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u666e\u901a\u7684\u670d\u52a1\u5355\u5143\uff1a (1)\u5728\u57fa\u7840\u7cfb\u7edf\u542f\u52a8\u5b8c\u6bd5\u4e4b\u540e\u624d\u5f00\u59cb\u542f\u52a8\uff0c(2)\u5728\u5173\u95ed\u7cfb\u7edf\u4e4b\u524d\u5148\u88ab\u5e72\u51c0\u7684\u505c\u6b62\u3002 \u53ea\u6709\u90a3\u4e9b\u9700\u8981\u5728\u7cfb\u7edf\u542f\u52a8\u7684\u65e9\u671f\u5c31\u5fc5\u987b\u542f\u52a8\u7684\u670d\u52a1\uff0c \u4ee5\u53ca\u90a3\u4e9b\u5fc5\u987b\u5728\u5173\u673a\u52a8\u4f5c\u7684\u7ed3\u5c3e\u624d\u80fd\u505c\u6b62\u7684\u670d\u52a1\u624d\u9700\u8981\u8bbe\u7f6e\u00a0<code class=\"varname\">DefaultDependencies=no<\/code>\u00a0\u3002<\/li>\n<li class=\"listitem\">\u4ece\u540c\u4e00\u4e2a\u6a21\u7248\u5b9e\u4f8b\u5316\u51fa\u6765\u7684\u6240\u6709\u670d\u52a1\u5355\u5143(\u5355\u5143\u540d\u79f0\u4e2d\u5e26\u6709 \"<code class=\"literal\">@<\/code>\" \u5b57\u7b26)\uff0c \u9ed8\u8ba4\u5168\u90e8\u5c5e\u4e8e\u4e0e\u6a21\u7248\u540c\u540d\u7684\u540c\u4e00\u4e2a slice \u5355\u5143(\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.slice.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.slice<\/span>(5)<\/span><\/a>)\u3002 \u8be5\u540c\u540d slice \u4e00\u822c\u5728\u7cfb\u7edf\u5173\u673a\u65f6\uff0c\u4e0e\u6240\u6709\u6a21\u7248\u5b9e\u4f8b\u4e00\u8d77\u505c\u6b62\u3002 \u5982\u679c\u4f60\u4e0d\u5e0c\u671b\u50cf\u4e0a\u9762\u8fd9\u6837\uff0c\u90a3\u4e48\u53ef\u4ee5\u5728\u6a21\u7248\u5355\u5143\u4e2d\u660e\u786e\u8bbe\u7f6e\u00a0<code class=\"varname\">DefaultDependencies=no<\/code>\u00a0\uff0c \u5e76\u4e14\uff1a\u8981\u4e48\u5728\u8be5\u6a21\u7248\u6587\u4ef6\u4e2d\u660e\u786e\u5b9a\u4e49\u7279\u5b9a\u7684 slice \u5355\u5143(\u540c\u6837\u4e5f\u8981\u660e\u786e\u8bbe\u7f6e\u00a0<code class=\"varname\">DefaultDependencies=no<\/code>)\u3001 \u8981\u4e48\u5728\u8be5\u6a21\u7248\u6587\u4ef6\u4e2d\u660e\u786e\u8bbe\u7f6e\u00a0<code class=\"varname\">Slice=system.slice<\/code>\u00a0(\u6216\u5176\u4ed6\u5408\u9002\u7684 slice)\u3002 \u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.resource-control.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.resource-control<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u3002<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"refsect1\">\n<p><a name=\"id-1.8\"><\/a><\/p>\n<h2 id=\"\u9009\u9879\">\u9009\u9879<\/h2>\n<p>\u6bcf\u4e2a\u670d\u52a1\u5355\u5143\u6587\u4ef6\u90fd\u5fc5\u987b\u5305\u542b\u4e00\u4e2a [Service] \u5c0f\u8282\u3002 \u7531\u4e8e\u6b64\u5c0f\u8282\u4e2d\u7684\u8bb8\u591a\u9009\u9879\u4e5f \u540c\u65f6\u9002\u7528\u4e8e\u5176\u4ed6\u7c7b\u578b\u7684\u5355\u5143\uff0c \u6240\u4ee5\u672c\u624b\u518c\u4ec5\u8bb0\u5f55\u4e86\u4e13\u7528\u4e8e\u670d\u52a1\u5355\u5143\u7684\u9009\u9879\u3002 \u5176\u4ed6\u5171\u4eab\u7684\u9009\u9879\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.exec.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.exec<\/span>(5)<\/span><\/a>,\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>,\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.resource-control.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.resource-control<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u3002 \u8fd9\u91cc\u53ea\u5217\u51fa\u4ec5\u80fd\u7528\u4e8e [Service] \u5c0f\u8282\u7684 \u9009\u9879(\u4ea6\u79f0\"\u6307\u4ee4\"\u6216\"\u5c5e\u6027\")\uff1a<\/p>\n<div class=\"variablelist\">\n<dl class=\"variablelist\">\n<dt id=\"Type=\"><span class=\"term\"><code class=\"varname\">Type=<\/code><\/span><\/dt>\n<dd>\u8bbe\u7f6e\u8fdb\u7a0b\u7684\u542f\u52a8\u7c7b\u578b\u3002\u5fc5\u987b\u8bbe\u4e3a\u00a0<code class=\"option\">simple<\/code>,\u00a0<code class=\"option\">exec<\/code>,\u00a0<code class=\"option\">forking<\/code>,\u00a0<code class=\"option\">oneshot<\/code>,\u00a0<code class=\"option\">dbus<\/code>,\u00a0<code class=\"option\">notify<\/code>,\u00a0<code class=\"option\">idle<\/code>\u00a0\u4e4b\u4e00\uff1a<\/p>\n<div class=\"itemizedlist\">\n<ul class=\"itemizedlist\">\n<li class=\"listitem\">\u5982\u679c\u8bbe\u4e3a\u00a0<code class=\"option\">simple<\/code>\u00a0(\u5f53\u8bbe\u7f6e\u4e86\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u3001 \u4f46\u662f\u6ca1\u6709\u8bbe\u7f6e\u00a0<code class=\"varname\">Type=<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">BusName=<\/code>\u00a0\u65f6\uff0c\u8fd9\u662f\u9ed8\u8ba4\u503c)\uff0c \u90a3\u4e48\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u8fdb\u7a0b\u5c31\u662f\u8be5\u670d\u52a1\u7684\u4e3b\u8fdb\u7a0b\uff0c \u5e76\u4e14 systemd \u4f1a\u8ba4\u4e3a\u5728\u521b\u5efa\u4e86\u8be5\u670d\u52a1\u7684\u4e3b\u670d\u52a1\u8fdb\u7a0b\u4e4b\u540e\uff0c\u8be5\u670d\u52a1\u5c31\u5df2\u7ecf\u542f\u52a8\u5b8c\u6210\u3002 \u5982\u679c\u6b64\u8fdb\u7a0b\u9700\u8981\u4e3a\u7cfb\u7edf\u4e2d\u7684\u5176\u4ed6\u8fdb\u7a0b\u63d0\u4f9b\u670d\u52a1\uff0c \u90a3\u4e48\u5fc5\u987b\u5728\u8be5\u670d\u52a1\u542f\u52a8\u4e4b\u524d\u5148\u5efa\u7acb\u597d\u901a\u4fe1\u6e20\u9053(\u4f8b\u5982\u5957\u63a5\u5b57)\uff0c \u8fd9\u6837\uff0c\u5728\u521b\u5efa\u4e3b\u670d\u52a1\u8fdb\u7a0b\u4e4b\u540e\u3001\u6267\u884c\u4e3b\u670d\u52a1\u8fdb\u7a0b\u4e4b\u524d\uff0c\u5373\u53ef\u542f\u52a8\u540e\u7ee7\u5355\u5143\uff0c \u4ece\u800c\u52a0\u5feb\u4e86\u540e\u7ee7\u5355\u5143\u7684\u542f\u52a8\u901f\u5ea6\u3002 \u8fd9\u5c31\u610f\u5473\u7740\u5bf9\u4e8e\u00a0<code class=\"option\">simple<\/code>\u00a0\u7c7b\u578b\u7684\u670d\u52a1\u6765\u8bf4\uff0c \u5373\u4f7f\u4e0d\u80fd\u6210\u529f\u8c03\u7528\u4e3b\u670d\u52a1\u8fdb\u7a0b(\u4f8b\u5982\u00a0<code class=\"varname\">User=<\/code>\u00a0\u4e0d\u5b58\u5728\u3001\u6216\u8005\u4e8c\u8fdb\u5236\u53ef\u6267\u884c\u6587\u4ef6\u4e0d\u5b58\u5728)\uff0c\u00a0<span class=\"command\"><strong>systemctl start<\/strong><\/span>\u00a0\u4e5f\u4ecd\u7136\u4f1a\u6267\u884c\u6210\u529f\u3002<\/li>\n<li class=\"listitem\"><code class=\"option\">exec<\/code>\u00a0\u4e0e\u00a0<code class=\"option\">simple<\/code>\u00a0\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0c \u53ea\u6709\u5728\u8be5\u670d\u52a1\u7684\u4e3b\u670d\u52a1\u8fdb\u7a0b\u6267\u884c\u5b8c\u6210\u4e4b\u540e\uff0csystemd \u624d\u4f1a\u8ba4\u4e3a\u8be5\u670d\u52a1\u542f\u52a8\u5b8c\u6210\u3002 \u5176\u4ed6\u540e\u7ee7\u5355\u5143\u5fc5\u987b\u4e00\u76f4\u963b\u585e\u5230\u8fd9\u4e2a\u65f6\u95f4\u70b9\u4e4b\u540e\u624d\u80fd\u7ee7\u7eed\u542f\u52a8\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u00a0<code class=\"option\">simple<\/code>\u00a0\u8868\u793a\u5f53\u00a0<code class=\"function\">fork()<\/code>\u00a0\u51fd\u6570\u8fd4\u56de\u65f6\uff0c\u5373\u7b97\u662f\u542f\u52a8\u5b8c\u6210\uff0c\u800c\u00a0<code class=\"option\">exec<\/code>\u00a0\u5219\u8868\u793a\u4ec5\u5728\u00a0<code class=\"function\">fork()<\/code>\u00a0\u4e0e\u00a0<code class=\"function\">execve()<\/code>\u00a0\u51fd\u6570\u90fd\u6267\u884c\u6210\u529f\u65f6\uff0c\u624d\u7b97\u662f\u542f\u52a8\u5b8c\u6210\u3002 \u8fd9\u5c31\u610f\u5473\u7740\u5bf9\u4e8e\u00a0<code class=\"option\">exec<\/code>\u00a0\u7c7b\u578b\u7684\u670d\u52a1\u6765\u8bf4\uff0c \u5982\u679c\u4e0d\u80fd\u6210\u529f\u8c03\u7528\u4e3b\u670d\u52a1\u8fdb\u7a0b(\u4f8b\u5982\u00a0<code class=\"varname\">User=<\/code>\u00a0\u4e0d\u5b58\u5728\u3001\u6216\u8005\u4e8c\u8fdb\u5236\u53ef\u6267\u884c\u6587\u4ef6\u4e0d\u5b58\u5728)\uff0c \u90a3\u4e48\u00a0<span class=\"command\"><strong>systemctl start<\/strong><\/span>\u00a0\u5c06\u4f1a\u6267\u884c\u5931\u8d25\u3002<\/li>\n<li class=\"listitem\">\u5982\u679c\u8bbe\u4e3a\u00a0<code class=\"option\">forking<\/code>\u00a0\uff0c\u90a3\u4e48\u8868\u793a\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u8fdb\u7a0b\u5c06\u4f1a\u5728\u542f\u52a8\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u00a0<code class=\"function\">fork()<\/code>\u00a0\u7cfb\u7edf\u8c03\u7528\u3002 \u4e5f\u5c31\u662f\u5f53\u6240\u6709\u901a\u4fe1\u6e20\u9053\u90fd\u5df2\u5efa\u597d\u3001\u542f\u52a8\u4ea6\u5df2\u6210\u529f\u4e4b\u540e\uff0c\u7236\u8fdb\u7a0b\u5c06\u4f1a\u9000\u51fa\uff0c\u800c\u5b50\u8fdb\u7a0b\u5c06\u4f5c\u4e3a\u4e3b\u670d\u52a1\u8fdb\u7a0b\u7ee7\u7eed\u8fd0\u884c\u3002 \u8fd9\u662f\u4f20\u7edfUNIX\u5b88\u62a4\u8fdb\u7a0b\u7684\u7ecf\u5178\u505a\u6cd5\u3002 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0csystemd \u4f1a\u8ba4\u4e3a\u5728\u7236\u8fdb\u7a0b\u9000\u51fa\u4e4b\u540e\uff0c\u8be5\u670d\u52a1\u5c31\u5df2\u7ecf\u542f\u52a8\u5b8c\u6210\u3002 \u5982\u679c\u4f7f\u7528\u4e86\u6b64\u79cd\u7c7b\u578b\uff0c\u90a3\u4e48\u5efa\u8bae\u540c\u65f6\u8bbe\u7f6e\u00a0<code class=\"varname\">PIDFile=<\/code>\u00a0\u9009\u9879\uff0c\u4ee5\u5e2e\u52a9 systemd \u51c6\u786e\u53ef\u9760\u7684\u5b9a\u4f4d\u8be5\u670d\u52a1\u7684\u4e3b\u8fdb\u7a0b\u3002 systemd \u5c06\u4f1a\u5728\u7236\u8fdb\u7a0b\u9000\u51fa\u4e4b\u540e \u7acb\u5373\u5f00\u59cb\u542f\u52a8\u540e\u7ee7\u5355\u5143\u3002<\/li>\n<li class=\"listitem\"><code class=\"option\">oneshot<\/code>\u00a0\u4e0e\u00a0<code class=\"option\">simple<\/code>\u00a0\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0c \u53ea\u6709\u5728\u8be5\u670d\u52a1\u7684\u4e3b\u670d\u52a1\u8fdb\u7a0b\u9000\u51fa\u4e4b\u540e\uff0csystemd \u624d\u4f1a\u8ba4\u4e3a\u8be5\u670d\u52a1\u542f\u52a8\u5b8c\u6210\uff0c\u624d\u4f1a\u5f00\u59cb\u542f\u52a8\u540e\u7ee7\u5355\u5143\u3002 \u6b64\u79cd\u7c7b\u578b\u7684\u670d\u52a1\u901a\u5e38\u9700\u8981\u8bbe\u7f6e\u00a0<code class=\"varname\">RemainAfterExit=<\/code>\u00a0\u9009\u9879\u3002 \u5f53\u00a0<code class=\"varname\">Type=<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u90fd\u6ca1\u6709\u8bbe\u7f6e\u65f6\uff0c\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">oneshot<\/code>\u00a0\u5c31\u662f\u9ed8\u8ba4\u503c\u3002<\/li>\n<li class=\"listitem\"><code class=\"option\">dbus<\/code>\u00a0\u4e0e\u00a0<code class=\"option\">simple<\/code>\u00a0\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0c \u8be5\u670d\u52a1\u53ea\u6709\u83b7\u5f97\u4e86\u00a0<code class=\"varname\">BusName=<\/code>\u00a0\u6307\u5b9a\u7684 D-Bus \u540d\u79f0\u4e4b\u540e\uff0csystemd \u624d\u4f1a\u8ba4\u4e3a\u8be5\u670d\u52a1\u542f\u52a8\u5b8c\u6210\uff0c\u624d\u4f1a\u5f00\u59cb\u542f\u52a8\u540e\u7ee7\u5355\u5143\u3002 \u8bbe\u4e3a\u6b64\u7c7b\u578b\u76f8\u5f53\u4e8e\u9690\u542b\u7684\u4f9d\u8d56\u4e8e\u00a0<code class=\"filename\">dbus.socket<\/code>\u00a0\u5355\u5143\u3002 \u5f53\u8bbe\u7f6e\u4e86\u00a0<code class=\"varname\">BusName=<\/code>\u00a0\u65f6\uff0c \u6b64\u7c7b\u578b\u5c31\u662f\u9ed8\u8ba4\u503c\u3002<\/li>\n<li class=\"listitem\"><code class=\"option\">notify<\/code>\u00a0\u4e0e\u00a0<code class=\"option\">exec<\/code>\u00a0\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0c \u8be5\u670d\u52a1\u5c06\u4f1a\u5728\u542f\u52a8\u5b8c\u6210\u4e4b\u540e\u901a\u8fc7\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_notify.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_notify<\/span>(3)<\/span><\/a>\u00a0\u4e4b\u7c7b\u7684\u63a5\u53e3\u53d1\u9001\u4e00\u4e2a\u901a\u77e5\u6d88\u606f\u3002systemd \u5c06\u4f1a\u5728\u542f\u52a8\u540e\u7ee7\u5355\u5143\u4e4b\u524d\uff0c \u9996\u5148\u786e\u4fdd\u8be5\u8fdb\u7a0b\u5df2\u7ecf\u6210\u529f\u7684\u53d1\u9001\u4e86\u8fd9\u4e2a\u6d88\u606f\u3002\u5982\u679c\u8bbe\u4e3a\u6b64\u7c7b\u578b\uff0c\u90a3\u4e48\u4e0b\u6587\u7684\u00a0<code class=\"varname\">NotifyAccess=<\/code>\u00a0\u5c06\u53ea\u80fd\u8bbe\u4e3a\u975e\u00a0<code class=\"option\">none<\/code>\u00a0\u503c\u3002\u5982\u679c\u672a\u8bbe\u7f6e\u00a0<code class=\"varname\">NotifyAccess=<\/code>\u00a0\u9009\u9879\u3001\u6216\u8005\u5df2\u7ecf\u88ab\u660e\u786e\u8bbe\u4e3a\u00a0<code class=\"option\">none<\/code>\u00a0\uff0c\u90a3\u4e48\u5c06\u4f1a\u88ab\u81ea\u52a8\u5f3a\u5236\u4fee\u6539\u4e3a\u00a0<code class=\"option\">main<\/code>\u00a0\u3002\u6ce8\u610f\uff0c\u76ee\u524d\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">notify<\/code>\u00a0\u5c1a\u4e0d\u80fd\u4e0e\u00a0<code class=\"varname\">PrivateNetwork=<\/code><code class=\"option\">yes<\/code>\u00a0\u4e00\u8d77\u4f7f\u7528\u3002<\/li>\n<li class=\"listitem\"><code class=\"option\">idle<\/code>\u00a0\u4e0e\u00a0<code class=\"option\">simple<\/code>\u00a0\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0c \u670d\u52a1\u8fdb\u7a0b\u5c06\u4f1a\u88ab\u5ef6\u8fdf\u5230\u6240\u6709\u6d3b\u52a8\u4efb\u52a1\u90fd\u5b8c\u6210\u4e4b\u540e\u518d\u6267\u884c\u3002 \u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u63a7\u5236\u53f0\u4e0a\u7684\u72b6\u6001\u4fe1\u606f\u4e0eshell\u811a\u672c\u7684\u8f93\u51fa\u6df7\u6742\u5728\u4e00\u8d77\u3002 \u6ce8\u610f\uff1a(1)\u4ec5\u53ef\u7528\u4e8e\u6539\u5584\u63a7\u5236\u53f0\u8f93\u51fa\uff0c\u5207\u52ff\u5c06\u5176\u7528\u4e8e\u4e0d\u540c\u5355\u5143\u4e4b\u95f4\u7684\u6392\u5e8f\u5de5\u5177\uff1b (2)\u5ef6\u8fdf\u6700\u591a\u4e0d\u8d85\u8fc75\u79d2\uff0c \u8d85\u65f6\u540e\u5c06\u65e0\u6761\u4ef6\u7684\u542f\u52a8\u670d\u52a1\u8fdb\u7a0b\u3002<\/li>\n<\/ul>\n<\/div>\n<p>\u5efa\u8bae\u5bf9\u957f\u65f6\u95f4\u6301\u7eed\u8fd0\u884c\u7684\u670d\u52a1\u5c3d\u53ef\u80fd\u4f7f\u7528\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">simple<\/code>\u00a0(\u8fd9\u662f\u6700\u7b80\u5355\u548c\u901f\u5ea6\u6700\u5feb\u7684\u9009\u62e9)\u3002 \u6ce8\u610f\uff0c\u56e0\u4e3a\u00a0<code class=\"option\">simple<\/code>\u00a0\u7c7b\u578b\u7684\u670d\u52a1 \u65e0\u6cd5\u62a5\u544a\u542f\u52a8\u5931\u8d25\u3001\u4e5f\u65e0\u6cd5\u5728\u670d\u52a1\u5b8c\u6210\u521d\u59cb\u5316\u540e\u5bf9\u5176\u4ed6\u5355\u5143\u8fdb\u884c\u6392\u5e8f\uff0c \u6240\u4ee5\uff0c\u5f53\u5ba2\u6237\u7aef\u9700\u8981\u901a\u8fc7\u4ec5\u7531\u8be5\u670d\u52a1\u672c\u8eab\u521b\u5efa\u7684IPC\u901a\u9053(\u800c\u975e\u7531 systemd \u521b\u5efa\u7684\u5957\u63a5\u5b57\u6216 D-bus \u4e4b\u7c7b)\u8fde\u63a5\u5230\u8be5\u670d\u52a1\u7684\u65f6\u5019\uff0c\u00a0<code class=\"option\">simple<\/code>\u00a0\u7c7b\u578b\u5e76\u4e0d\u662f\u6700\u4f73\u9009\u62e9\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u00a0<code class=\"option\">notify<\/code>\u00a0\u6216\u00a0<code class=\"option\">dbus<\/code>(\u8be5\u670d\u52a1\u5fc5\u987b\u63d0\u4f9b D-Bus \u63a5\u53e3) \u624d\u662f\u6700\u4f73\u9009\u62e9\uff0c \u56e0\u4e3a\u8fd9\u4e24\u79cd\u7c7b\u578b\u90fd\u5141\u8bb8\u670d\u52a1\u8fdb\u7a0b\u7cbe\u786e\u7684\u5b89\u6392 \u4f55\u65f6\u7b97\u662f\u670d\u52a1\u542f\u52a8\u6210\u529f\u3001\u4f55\u65f6\u53ef\u4ee5\u7ee7\u7eed\u542f\u52a8\u540e\u7ee7\u5355\u5143\u3002\u00a0<code class=\"option\">notify<\/code>\u00a0\u7c7b\u578b\u9700\u8981\u670d\u52a1\u8fdb\u7a0b\u660e\u786e\u4f7f\u7528\u00a0<code class=\"function\">sd_notify()<\/code>\u00a0\u51fd\u6570\u6216\u7c7b\u4f3c\u7684API\uff0c \u5426\u5219\uff0c\u53ef\u4ee5\u4f7f\u7528\u00a0<code class=\"option\">forking<\/code>\u00a0\u4f5c\u4e3a\u66ff\u4ee3(\u5b83\u652f\u6301\u4f20\u7edf\u7684UNIX\u670d\u52a1\u542f\u52a8\u534f\u8bae)\u3002 \u6700\u540e\uff0c\u5982\u679c\u80fd\u591f\u786e\u4fdd\u670d\u52a1\u8fdb\u7a0b\u8c03\u7528\u6210\u529f\u3001\u670d\u52a1\u8fdb\u7a0b\u81ea\u8eab\u4e0d\u505a\u6216\u53ea\u505a\u5f88\u5c11\u7684\u521d\u59cb\u5316\u5de5\u4f5c(\u4e14\u4e0d\u5927\u53ef\u80fd\u521d\u59cb\u5316\u5931\u8d25)\uff0c \u90a3\u4e48\u00a0<code class=\"option\">exec<\/code>\u00a0\u5c06\u662f\u6700\u4f73\u9009\u62e9\u3002 \u6ce8\u610f\uff0c\u56e0\u4e3a\u4f7f\u7528\u4efb\u4f55\u00a0<code class=\"option\">simple<\/code>\u00a0\u4e4b\u5916\u7684\u7c7b\u578b\u90fd\u9700\u8981\u7b49\u5f85\u670d\u52a1\u5b8c\u6210\u521d\u59cb\u5316\uff0c\u6240\u4ee5\u53ef\u80fd\u4f1a\u51cf\u6162\u7cfb\u7edf\u542f\u52a8\u901f\u5ea6\u3002 \u56e0\u6b64\uff0c\u5e94\u8be5\u5c3d\u53ef\u80fd\u907f\u514d\u4f7f\u7528\u00a0<code class=\"option\">simple<\/code>\u00a0\u4e4b\u5916\u7684\u7c7b\u578b(\u9664\u975e\u5fc5\u987b)\u3002\u53e6\u5916\uff0c\u4e5f\u4e0d\u5efa\u8bae\u5bf9\u957f\u65f6\u95f4\u6301\u7eed\u8fd0\u884c\u7684\u670d\u52a1\u4f7f\u7528\u00a0<code class=\"option\">idle<\/code>\u00a0\u6216\u00a0<code class=\"option\">oneshot<\/code>\u00a0\u7c7b\u578b\u3002<\/dd>\n<dt id=\"RemainAfterExit=\"><span class=\"term\"><code class=\"varname\">RemainAfterExit=<\/code><\/span><\/dt>\n<dd>\u5f53\u8be5\u670d\u52a1\u7684\u6240\u6709\u8fdb\u7a0b\u5168\u90e8\u9000\u51fa\u4e4b\u540e\uff0c \u662f\u5426\u4f9d\u7136\u5c06\u6b64\u670d\u52a1\u89c6\u4e3a\u6d3b\u52a8(active)\u72b6\u6001\u3002 \u9ed8\u8ba4\u503c\u4e3a\u00a0<code class=\"option\">no<\/code><\/dd>\n<dt id=\"GuessMainPID=\"><span class=\"term\"><code class=\"varname\">GuessMainPID=<\/code><\/span><\/dt>\n<dd>\u5728\u65e0\u6cd5\u660e\u786e\u5b9a\u4f4d \u8be5\u670d\u52a1\u4e3b\u8fdb\u7a0b\u7684\u60c5\u51b5\u4e0b\uff0c systemd \u662f\u5426\u5e94\u8be5\u731c\u6d4b\u4e3b\u8fdb\u7a0b\u7684PID(\u53ef\u80fd\u4e0d\u6b63\u786e)\u3002 \u8be5\u9009\u9879\u4ec5\u5728\u8bbe\u7f6e\u4e86\u00a0<code class=\"option\">Type=forking<\/code>\u00a0\u4f46\u672a\u8bbe\u7f6e\u00a0<code class=\"option\">PIDFile=<\/code>\u00a0\u7684\u60c5\u51b5\u4e0b\u6709\u610f\u4e49\u3002 \u5982\u679cPID\u731c\u6d4b\u9519\u8bef\uff0c \u90a3\u4e48\u8be5\u670d\u52a1\u7684\u5931\u8d25\u68c0\u6d4b\u4e0e\u81ea\u52a8\u91cd\u542f\u529f\u80fd\u5c06\u5931\u6548\u3002 \u9ed8\u8ba4\u503c\u4e3a\u00a0<code class=\"option\">yes<\/code><\/dd>\n<dt id=\"PIDFile=\"><span class=\"term\"><code class=\"varname\">PIDFile=<\/code><\/span><\/dt>\n<dd>\u8be5\u670d\u52a1PID\u6587\u4ef6\u7684\u8def\u5f84(\u4e00\u822c\u4f4d\u4e8e\u00a0<code class=\"filename\">\/run\/<\/code>\u00a0\u76ee\u5f55\u4e0b)\u3002 \u5f3a\u70c8\u5efa\u8bae\u5728\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">forking<\/code>\u00a0\u7684\u60c5\u51b5\u4e0b\u660e\u786e\u8bbe\u7f6e\u6b64\u9009\u9879\u3002 \u5982\u679c\u8bbe\u4e3a\u76f8\u5bf9\u8def\u5f84\uff0c\u90a3\u4e48\u8868\u793a\u76f8\u5bf9\u4e8e\u00a0<code class=\"filename\">\/run\/<\/code>\u00a0\u76ee\u5f55\u3002 systemd \u5c06\u4f1a\u5728\u6b64\u670d\u52a1\u542f\u52a8\u5b8c\u6210\u4e4b\u540e\uff0c\u4ece\u6b64\u6587\u4ef6\u4e2d\u8bfb\u53d6\u4e3b\u670d\u52a1\u8fdb\u7a0b\u7684PID \u3002 systemd \u4e0d\u4f1a\u5199\u5165\u6b64\u6587\u4ef6\uff0c\u4f46\u4f1a\u5728\u6b64\u670d\u52a1\u505c\u6b62\u540e\u5220\u9664\u5b83(\u82e5\u4ecd\u7136\u5b58\u5728)\u3002 PID\u6587\u4ef6\u7684\u62e5\u6709\u8005\u4e0d\u5fc5\u662f\u7279\u6743\u7528\u6237\uff0c \u4f46\u662f\u5982\u679c\u62e5\u6709\u8005\u662f\u975e\u7279\u6743\u7528\u6237\uff0c\u90a3\u4e48\u5fc5\u987b\u65bd\u52a0\u5982\u4e0b\u5b89\u5168\u9650\u5236\uff1a (1)\u4e0d\u80fd\u662f\u4e00\u4e2a\u6307\u5411\u5176\u4ed6\u62e5\u6709\u8005\u6587\u4ef6\u7684\u8f6f\u8fde\u63a5(\u65e0\u8bba\u76f4\u63a5\u8fd8\u662f\u95f4\u63a5)\uff1b (2)\u5176\u4e2d\u7684PID\u5fc5\u987b\u6307\u5411\u4e00\u4e2a\u5c5e\u4e8e\u8be5\u670d\u52a1\u7684\u8fdb\u7a0b\u3002<\/dd>\n<dt id=\"BusName=\"><span class=\"term\"><code class=\"varname\">BusName=<\/code><\/span><\/dt>\n<dd>\u8bbe\u7f6e\u4e0e\u6b64\u670d\u52a1\u901a\u4fe1 \u6240\u4f7f\u7528\u7684 D-Bus \u540d\u79f0\u3002 \u5728\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">dbus<\/code>\u00a0\u7684\u60c5\u51b5\u4e0b \u5fc5\u987b\u660e\u786e\u8bbe\u7f6e\u6b64\u9009\u9879\u3002<\/dd>\n<dt id=\"ExecStart=\"><span class=\"term\"><code class=\"varname\">ExecStart=<\/code><\/span><\/dt>\n<dd>\u5728\u542f\u52a8\u8be5\u670d\u52a1\u65f6\u9700\u8981\u6267\u884c\u7684 \u547d\u4ee4\u884c(\u547d\u4ee4+\u53c2\u6570)\u3002 \u6709\u5173\u547d\u4ee4\u884c\u7684\u66f4\u591a\u7ec6\u8282\uff0c \u53ef\u53c2\u89c1\u540e\u6587\u7684\"\u547d\u4ee4\u884c\"\u5c0f\u8282\u3002<\/p>\n<p>\u9664\u975e\u00a0<code class=\"varname\">Type=oneshot<\/code>\u00a0\uff0c\u5426\u5219\u5fc5\u987b\u4e14\u53ea\u80fd\u8bbe\u7f6e\u4e00\u4e2a\u547d\u4ee4\u884c\u3002 \u4ec5\u5728\u00a0<code class=\"varname\">Type=oneshot<\/code>\u00a0\u7684\u60c5\u51b5\u4e0b\uff0c\u624d\u53ef\u4ee5\u8bbe\u7f6e\u4efb\u610f\u4e2a\u547d\u4ee4\u884c(\u5305\u62ec\u96f6\u4e2a)\uff0c \u591a\u4e2a\u547d\u4ee4\u884c\u65e2\u53ef\u4ee5\u5728\u540c\u4e00\u4e2a\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u4e2d\u8bbe\u7f6e\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u591a\u4e2a\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u6765\u8fbe\u5230\u76f8\u540c\u7684\u6548\u679c\u3002 \u5982\u679c\u8bbe\u4e3a\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32\uff0c\u90a3\u4e48\u5148\u524d\u8bbe\u7f6e\u7684\u6240\u6709\u547d\u4ee4\u884c\u90fd\u5c06\u88ab\u6e05\u7a7a\u3002 \u5982\u679c\u4e0d\u8bbe\u7f6e\u4efb\u4f55\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u6307\u4ee4\uff0c \u90a3\u4e48\u5fc5\u987b\u786e\u4fdd\u8bbe\u7f6e\u4e86\u00a0<code class=\"varname\">RemainAfterExit=yes<\/code>\u00a0\u6307\u4ee4\uff0c\u5e76\u4e14\u81f3\u5c11\u8bbe\u7f6e\u4e00\u4e2a\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u6307\u4ee4\u3002 \u540c\u65f6\u7f3a\u5c11\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u7684\u670d\u52a1\u5355\u5143\u662f\u975e\u6cd5\u7684(\u4e5f\u5c31\u662f\u5fc5\u987b\u81f3\u5c11\u660e\u786e\u8bbe\u7f6e\u5176\u4e2d\u4e4b\u4e00)\u3002<\/p>\n<p>\u547d\u4ee4\u884c\u5fc5\u987b\u4ee5\u4e00\u4e2a\u53ef\u6267\u884c\u6587\u4ef6(\u8981\u4e48\u662f\u7edd\u5bf9\u8def\u5f84\u3001\u8981\u4e48\u662f\u4e0d\u542b\u4efb\u4f55\u659c\u7ebf\u7684\u6587\u4ef6\u540d)\u5f00\u59cb\uff0c \u5e76\u4e14\u5176\u540e\u7684\u90a3\u4e9b\u53c2\u6570\u5c06\u4f9d\u6b21\u4f5c\u4e3a\"argv[1] argv[2] \u2026\"\u4f20\u9012\u7ed9\u88ab\u6267\u884c\u7684\u8fdb\u7a0b\u3002 \u53ef\u9009\u7684\uff0c\u53ef\u4ee5\u5728\u7edd\u5bf9\u8def\u5f84\u524d\u9762\u52a0\u4e0a\u5404\u79cd\u4e0d\u540c\u7684\u524d\u7f00\u8868\u793a\u4e0d\u540c\u7684\u542b\u4e49\uff1a<\/p>\n<div class=\"table\">\n<p><a name=\"id-1.8.3.6.2.4\"><\/a><\/p>\n<p class=\"title\"><b>\u8868\u00a01.\u00a0\u53ef\u6267\u884c\u6587\u4ef6\u524d\u7684\u7279\u6b8a\u524d\u7f00<\/b><\/p>\n<div class=\"table-contents\">\n<table class=\"table\" border=\"1\" summary=\"\u53ef\u6267\u884c\u6587\u4ef6\u524d\u7684\u7279\u6b8a\u524d\u7f00\">\n<colgroup>\n<col class=\"prefix\" \/>\n<col class=\"meaning\" \/><\/colgroup>\n<thead>\n<tr>\n<th>\u524d\u7f00<\/th>\n<th>\u6548\u679c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\"<code class=\"literal\">@<\/code>\"<\/td>\n<td>\u5982\u679c\u5728\u7edd\u5bf9\u8def\u5f84\u524d\u52a0\u4e0a\u53ef\u9009\u7684 \"<code class=\"literal\">@<\/code>\" \u524d\u7f00\uff0c\u90a3\u4e48\u5176\u540e\u7684\u90a3\u4e9b\u53c2\u6570\u5c06\u4f9d\u6b21\u4f5c\u4e3a\"argv[0] argv[1] argv[2] \u2026\"\u4f20\u9012\u7ed9\u88ab\u6267\u884c\u7684\u8fdb\u7a0b(\u6ce8\u610f\uff0cargv[0] \u662f\u53ef\u6267\u884c\u6587\u4ef6\u672c\u8eab)\u3002<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">-<\/code>\"<\/td>\n<td>\u5982\u679c\u5728\u7edd\u5bf9\u8def\u5f84\u524d\u52a0\u4e0a\u53ef\u9009\u7684 \"<code class=\"literal\">-<\/code>\" \u524d\u7f00\uff0c\u90a3\u4e48\u5373\u4f7f\u8be5\u8fdb\u7a0b\u4ee5\u5931\u8d25\u72b6\u6001(\u4f8b\u5982\u975e\u96f6\u7684\u8fd4\u56de\u503c\u6216\u8005\u51fa\u73b0\u5f02\u5e38)\u9000\u51fa\uff0c\u4e5f\u4f1a\u88ab\u89c6\u4e3a\u6210\u529f\u9000\u51fa\uff0c\u4f46\u540c\u65f6\u4f1a\u7559\u4e0b\u9519\u8bef\u65e5\u5fd7\u3002<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">+<\/code>\"<\/td>\n<td>\u5982\u679c\u5728\u7edd\u5bf9\u8def\u5f84\u524d\u52a0\u4e0a\u53ef\u9009\u7684 \"<code class=\"literal\">+<\/code>\" \u524d\u7f00\uff0c\u90a3\u4e48\u8fdb\u7a0b\u5c06\u62e5\u6709\u5b8c\u5168\u7684\u6743\u9650(\u8d85\u7ea7\u7528\u6237\u7684\u7279\u6743)\uff0c\u5e76\u4e14\u00a0<code class=\"varname\">User=<\/code>,\u00a0<code class=\"varname\">Group=<\/code>,\u00a0<code class=\"varname\">CapabilityBoundingSet=<\/code>\u00a0\u9009\u9879\u6240\u8bbe\u7f6e\u7684\u6743\u9650\u9650\u5236\u4ee5\u53ca\u00a0<code class=\"varname\">PrivateDevices=<\/code>,\u00a0<code class=\"varname\">PrivateTmp=<\/code>\u00a0\u7b49\u6587\u4ef6\u7cfb\u7edf\u540d\u5b57\u7a7a\u95f4\u7684\u914d\u7f6e\u5c06\u88ab\u8be5\u547d\u4ee4\u884c\u542f\u52a8\u7684\u8fdb\u7a0b\u5ffd\u7565(\u4f46\u4ecd\u7136\u5bf9\u5176\u4ed6\u00a0<code class=\"varname\">ExecStart=<\/code>,\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u6709\u6548)\u3002<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">!<\/code>\"<\/td>\n<td>\u4e0e \"<code class=\"literal\">+<\/code>\" \u7c7b\u4f3c(\u8fdb\u7a0b\u4ecd\u7136\u62e5\u6709\u8d85\u7ea7\u7528\u6237\u7684\u8eab\u4efd)\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u4ec5\u5ffd\u7565\u00a0<code class=\"varname\">User=<\/code>,\u00a0<code class=\"varname\">Group=<\/code>,\u00a0<code class=\"varname\">SupplementaryGroups=<\/code>\u00a0\u9009\u9879\u7684\u8bbe\u7f6e\uff0c\u800c\u4f8b\u5982\u540d\u5b57\u7a7a\u95f4\u4e4b\u7c7b\u7684\u5176\u4ed6\u9650\u5236\u4f9d\u7136\u6709\u6548\u3002\u6ce8\u610f\uff0c\u5f53\u4e0e\u00a0<code class=\"varname\">DynamicUser=<\/code>\u00a0\u4e00\u8d77\u4f7f\u7528\u65f6\uff0c\u5c06\u4f1a\u5728\u6267\u884c\u8be5\u547d\u4ee4\u4e4b\u524d\u5148\u52a8\u6001\u5206\u914d\u4e00\u5bf9 user\/group \uff0c\u7136\u540e\u5c06\u8eab\u4efd\u51ed\u8bc1\u7684\u5207\u6362\u64cd\u4f5c\u7559\u7ed9\u8fdb\u7a0b\u81ea\u5df1\u53bb\u6267\u884c\u3002<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">!!<\/code>\"<\/td>\n<td>\u4e0e \"<code class=\"literal\">!<\/code>\" \u6781\u5176\u76f8\u4f3c\uff0c\u4ec5\u7528\u4e8e\u8ba9\u5229\u7528 ambient capability \u9650\u5236\u8fdb\u7a0b\u6743\u9650\u7684\u5355\u5143\u517c\u5bb9\u4e0d\u652f\u6301 ambient capability \u7684\u7cfb\u7edf(\u4e5f\u5c31\u662f\u4e0d\u652f\u6301\u00a0<code class=\"varname\">AmbientCapabilities=<\/code>\u00a0\u9009\u9879)\u3002\u5982\u679c\u5728\u4e0d\u652f\u6301 ambient capability \u7684\u7cfb\u7edf\u4e0a\u4f7f\u7528\u6b64\u524d\u7f00\uff0c\u90a3\u4e48\u00a0<code class=\"varname\">SystemCallFilter=<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">CapabilityBoundingSet=<\/code>\u00a0\u5c06\u88ab\u9690\u542b\u7684\u81ea\u52a8\u4fee\u6539\u4e3a\u5141\u8bb8\u8fdb\u7a0b\u81ea\u5df1\u4e22\u5f03 capability \u4e0e\u7279\u6743\u7528\u6237\u7684\u8eab\u4efd(\u5373\u4f7f\u539f\u6765\u88ab\u914d\u7f6e\u4e3a\u7981\u6b62\u8fd9\u4e48\u505a)\uff0c\u5e76\u4e14\u00a0<code class=\"varname\">AmbientCapabilities=<\/code>\u00a0\u9009\u9879\u5c06\u4f1a\u88ab\u5ffd\u7565\u3002\u6b64\u524d\u7f00\u5728\u652f\u6301 ambient capability \u7684\u7cfb\u7edf\u4e0a\u5b8c\u5168\u6ca1\u6709\u4efb\u4f55\u6548\u679c\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p><br class=\"table-break\" \/>\"<code class=\"literal\">@<\/code>\", \"<code class=\"literal\">-<\/code>\" \u4ee5\u53ca \"<code class=\"literal\">+<\/code>\"\/\"<code class=\"literal\">!<\/code>\"\/\"<code class=\"literal\">!!<\/code>\" \u4e4b\u4e00\uff0c\u53ef\u4ee5\u6309\u4efb\u610f\u987a\u5e8f\u540c\u65f6\u6df7\u5408\u4f7f\u7528\u3002 \u6ce8\u610f\uff0c\u5bf9\u4e8e \"<code class=\"literal\">+<\/code>\", \"<code class=\"literal\">!<\/code>\", \"<code class=\"literal\">!!<\/code>\" \u524d\u7f00\u6765\u8bf4\uff0c\u4ec5\u80fd\u5355\u72ec\u4f7f\u7528\u4e09\u8005\u4e4b\u4e00\uff0c\u4e0d\u53ef\u6df7\u5408\u4f7f\u7528\u591a\u4e2a\u3002 \u6ce8\u610f\uff0c\u8fd9\u4e9b\u524d\u7f00\u540c\u6837\u4e5f\u53ef\u4ee5\u7528\u4e8e\u00a0<code class=\"varname\">ExecStartPre=<\/code>,\u00a0<code class=\"varname\">ExecStartPost=<\/code>,\u00a0<code class=\"varname\">ExecReload=<\/code>,\u00a0<code class=\"varname\">ExecStop=<\/code>,\u00a0<code class=\"varname\">ExecStopPost=<\/code>\u00a0\u8fd9\u4e9b\u63a5\u53d7\u547d\u4ee4\u884c\u7684\u9009\u9879\u3002<\/p>\n<p>\u5982\u679c\u8bbe\u7f6e\u4e86\u591a\u4e2a\u547d\u4ee4\u884c\uff0c \u90a3\u4e48\u8fd9\u4e9b\u547d\u4ee4\u884c\u5c06\u4ee5\u5176\u5728\u5355\u5143\u6587\u4ef6\u4e2d\u51fa\u73b0\u7684\u987a\u5e8f\u4f9d\u6b21\u6267\u884c\u3002 \u5982\u679c\u67d0\u4e2a\u65e0 \"<code class=\"literal\">-<\/code>\" \u524d\u7f00\u7684\u547d\u4ee4\u884c\u6267\u884c\u5931\u8d25\uff0c \u90a3\u4e48\u5269\u4f59\u7684\u547d\u4ee4\u884c\u5c06\u4e0d\u4f1a\u88ab\u7ee7\u7eed\u6267\u884c\uff0c \u540c\u65f6\u8be5\u5355\u5143\u5c06\u53d8\u4e3a\u5931\u8d25(failed)\u72b6\u6001\u3002<\/p>\n<p>\u5f53\u672a\u8bbe\u7f6e\u00a0<code class=\"varname\">Type=forking<\/code>\u00a0\u65f6\uff0c \u8fd9\u91cc\u8bbe\u7f6e\u7684\u547d\u4ee4\u884c\u6240\u542f\u52a8\u7684\u8fdb\u7a0b \u5c06\u88ab\u89c6\u4e3a\u8be5\u670d\u52a1\u7684\u4e3b\u5b88\u62a4\u8fdb\u7a0b\u3002<\/dd>\n<dt id=\"ExecStartPre=\"><span class=\"term\"><code class=\"varname\">ExecStartPre=<\/code>,\u00a0<\/span><span class=\"term\"><code class=\"varname\">ExecStartPost=<\/code><\/span><\/dt>\n<dd>\u8bbe\u7f6e\u5728\u6267\u884c\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u4e4b\u524d\/\u540e\u6267\u884c\u7684\u547d\u4ee4\u884c\u3002 \u8bed\u6cd5\u89c4\u5219\u4e0e\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u5b8c\u5168\u76f8\u540c\u3002 \u5982\u679c\u8bbe\u7f6e\u4e86\u591a\u4e2a\u547d\u4ee4\u884c\uff0c \u90a3\u4e48\u8fd9\u4e9b\u547d\u4ee4\u884c\u5c06\u4ee5\u5176\u5728\u5355\u5143\u6587\u4ef6\u4e2d\u51fa\u73b0\u7684\u987a\u5e8f \u4f9d\u6b21\u6267\u884c\u3002<\/p>\n<p>\u5982\u679c\u67d0\u4e2a\u65e0 \"<code class=\"literal\">-<\/code>\" \u524d\u7f00\u7684\u547d\u4ee4\u884c\u6267\u884c\u5931\u8d25\uff0c \u90a3\u4e48\u5269\u4f59\u7684\u547d\u4ee4\u884c\u5c06\u4e0d\u4f1a\u88ab\u7ee7\u7eed\u6267\u884c\uff0c \u540c\u65f6\u8be5\u5355\u5143\u5c06\u53d8\u4e3a\u5931\u8d25(failed)\u72b6\u6001\u3002<\/p>\n<p>\u4ec5\u5728\u6240\u6709\u65e0 \"<code class=\"literal\">-<\/code>\" \u524d\u7f00\u7684\u00a0<code class=\"varname\">ExecStartPre=<\/code>\u00a0\u547d\u4ee4\u5168\u90e8\u6267\u884c\u6210\u529f\u7684\u524d\u63d0\u4e0b\uff0c \u624d\u4f1a\u7ee7\u7eed\u6267\u884c\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u547d\u4ee4\u3002<\/p>\n<p><code class=\"varname\">ExecStartPost=<\/code>\u00a0\u547d\u4ee4\u4ec5\u5728\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u4e2d\u7684\u547d\u4ee4\u5df2\u7ecf\u5168\u90e8\u6267\u884c\u6210\u529f\u4e4b\u540e\u624d\u4f1a\u8fd0\u884c\uff0c \u5224\u65ad\u7684\u6807\u51c6\u57fa\u4e8e\u00a0<code class=\"varname\">Type=<\/code>\u00a0\u9009\u9879\u3002 \u5177\u4f53\u8bf4\u6765\uff0c\u5bf9\u4e8e\u00a0<code class=\"varname\">Type=simple<\/code>\u00a0\u6216\u00a0<code class=\"varname\">Type=idle<\/code>\u00a0\u5c31\u662f\u4e3b\u8fdb\u7a0b\u5df2\u7ecf\u6210\u529f\u542f\u52a8\uff1b \u5bf9\u4e8e\u00a0<code class=\"varname\">Type=oneshot<\/code>\u00a0\u6765\u8bf4\u5c31\u662f\u6700\u540e\u4e00\u4e2a\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u8fdb\u7a0b\u5df2\u7ecf\u6210\u529f\u9000\u51fa\uff1b \u5bf9\u4e8e\u00a0<code class=\"varname\">Type=forking<\/code>\u00a0\u6765\u8bf4\u5c31\u662f\u521d\u59cb\u8fdb\u7a0b\u5df2\u7ecf\u6210\u529f\u9000\u51fa\uff1b \u5bf9\u4e8e\u00a0<code class=\"varname\">Type=notify<\/code>\u00a0\u6765\u8bf4\u5c31\u662f\u5df2\u7ecf\u53d1\u9001\u4e86 \"<code class=\"literal\">READY=1<\/code>\" \uff1b \u5bf9\u4e8e\u00a0<code class=\"varname\">Type=dbus<\/code>\u00a0\u6765\u8bf4\u5c31\u662f\u5df2\u7ecf\u53d6\u5f97\u4e86\u00a0<code class=\"varname\">BusName=<\/code>\u00a0\u4e2d\u8bbe\u7f6e\u7684\u603b\u7ebf\u540d\u79f0\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u4e0d\u53ef\u5c06\u00a0<code class=\"varname\">ExecStartPre=<\/code>\u00a0\u7528\u4e8e \u9700\u8981\u957f\u65f6\u95f4\u6267\u884c\u7684\u8fdb\u7a0b\u3002 \u56e0\u4e3a\u6240\u6709\u7531\u00a0<code class=\"varname\">ExecStartPre=<\/code>\u00a0\u6d3e\u751f\u7684\u5b50\u8fdb\u7a0b \u90fd\u4f1a\u5728\u542f\u52a8\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u670d\u52a1\u8fdb\u7a0b\u4e4b\u524d\u88ab\u6740\u6b7b\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u5982\u679c\u5728\u670d\u52a1\u542f\u52a8\u5b8c\u6210\u4e4b\u524d\uff0c\u4efb\u610f\u4e00\u4e2a\u00a0<code class=\"varname\">ExecStartPre=<\/code>,\u00a0<code class=\"varname\">ExecStart=<\/code>,\u00a0<code class=\"varname\">ExecStartPost=<\/code>\u00a0\u4e2d\u65e0 \"<code class=\"literal\">-<\/code>\" \u524d\u7f00\u7684\u547d\u4ee4\u6267\u884c\u5931\u8d25\u6216\u8d85\u65f6\uff0c \u90a3\u4e48\uff0c<code class=\"varname\">ExecStopPost=<\/code>\u00a0\u5c06\u4f1a\u88ab\u7ee7\u7eed\u6267\u884c\uff0c\u800c\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u5219\u4f1a\u88ab\u8df3\u8fc7\u3002<\/dd>\n<dt id=\"ExecReload=\"><span class=\"term\"><code class=\"varname\">ExecReload=<\/code><\/span><\/dt>\n<dd>\u8fd9\u662f\u4e00\u4e2a\u53ef\u9009\u7684\u6307\u4ee4\uff0c \u7528\u4e8e\u8bbe\u7f6e\u5f53\u8be5\u670d\u52a1 \u88ab\u8981\u6c42\u91cd\u65b0\u8f7d\u5165\u914d\u7f6e\u65f6 \u6240\u6267\u884c\u7684\u547d\u4ee4\u884c\u3002 \u8bed\u6cd5\u89c4\u5219\u4e0e\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u5b8c\u5168\u76f8\u540c\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u8fd8\u6709\u4e00\u4e2a\u7279\u6b8a\u7684\u73af\u5883\u53d8\u91cf\u00a0<code class=\"varname\">$MAINPID<\/code>\u00a0\u53ef\u7528\u4e8e\u8868\u793a\u4e3b\u8fdb\u7a0b\u7684PID\uff0c \u4f8b\u5982\u53ef\u4ee5\u8fd9\u6837\u4f7f\u7528\uff1a<\/p>\n<pre class=\"programlisting\">\/bin\/kill -HUP $MAINPID<\/pre>\n<p>\u6ce8\u610f\uff0c\u50cf\u4e0a\u4f8b\u90a3\u6837\uff0c\u901a\u8fc7\u5411\u5b88\u62a4\u8fdb\u7a0b\u53d1\u9001\u590d\u4f4d\u4fe1\u53f7\uff0c \u5f3a\u5236\u5176\u91cd\u65b0\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\uff0c\u5e76\u4e0d\u662f\u4e00\u4e2a\u597d\u4e60\u60ef\u3002 \u56e0\u4e3a\u8fd9\u662f\u4e00\u4e2a\u5f02\u6b65\u64cd\u4f5c\uff0c \u6240\u4ee5\u4e0d\u9002\u7528\u4e8e\u9700\u8981\u6309\u7167\u7279\u5b9a\u987a\u5e8f\u91cd\u65b0\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\u7684\u670d\u52a1\u3002 \u6211\u4eec\u5f3a\u70c8\u5efa\u8bae\u5c06\u00a0<code class=\"varname\">ExecReload=<\/code>\u00a0\u8bbe\u4e3a\u4e00\u4e2a \u80fd\u591f\u786e\u4fdd\u91cd\u65b0\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\u7684\u64cd\u4f5c\u540c\u6b65\u5b8c\u6210\u7684\u547d\u4ee4\u884c\u3002<\/dd>\n<dt id=\"ExecStop=\"><span class=\"term\"><code class=\"varname\">ExecStop=<\/code><\/span><\/dt>\n<dd>\u8fd9\u662f\u4e00\u4e2a\u53ef\u9009\u7684\u6307\u4ee4\uff0c \u7528\u4e8e\u8bbe\u7f6e\u5f53\u8be5\u670d\u52a1\u88ab\u8981\u6c42\u505c\u6b62\u65f6\u6240\u6267\u884c\u7684\u547d\u4ee4\u884c\u3002 \u8bed\u6cd5\u89c4\u5219\u4e0e\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u5b8c\u5168\u76f8\u540c\u3002 \u6267\u884c\u5b8c\u6b64\u5904\u8bbe\u7f6e\u7684\u6240\u6709\u547d\u4ee4\u884c\u4e4b\u540e\uff0c\u8be5\u670d\u52a1\u5c06\u88ab\u89c6\u4e3a\u5df2\u7ecf\u505c\u6b62\uff0c \u6b64\u65f6\uff0c\u8be5\u670d\u52a1\u6240\u6709\u5269\u4f59\u7684\u8fdb\u7a0b\u5c06\u4f1a\u6839\u636e\u00a0<code class=\"varname\">KillMode=<\/code>\u00a0\u7684\u8bbe\u7f6e\u88ab\u6740\u6b7b(\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>)\u3002 \u5982\u679c\u672a\u8bbe\u7f6e\u6b64\u9009\u9879\uff0c\u90a3\u4e48\u5f53\u6b64\u670d\u52a1\u88ab\u505c\u6b62\u65f6\uff0c \u8be5\u670d\u52a1\u7684\u6240\u6709\u8fdb\u7a0b\u90fd\u5c06\u4f1a\u6839\u636e\u00a0<code class=\"varname\">KillSignal=<\/code>\u00a0\u7684\u8bbe\u7f6e\u88ab\u7acb\u5373\u5168\u90e8\u6740\u6b7b\u3002 \u4e0e\u00a0<code class=\"varname\">ExecReload=<\/code>\u00a0\u4e00\u6837\uff0c \u4e5f\u6709\u4e00\u4e2a\u7279\u6b8a\u7684\u73af\u5883\u53d8\u91cf\u00a0<code class=\"varname\">$MAINPID<\/code>\u00a0\u53ef\u7528\u4e8e\u8868\u793a\u4e3b\u8fdb\u7a0b\u7684PID \u3002<\/p>\n<p>\u4e00\u822c\u6765\u8bf4\uff0c\u4e0d\u5e94\u8be5\u4ec5\u4ec5\u8bbe\u7f6e\u4e00\u4e2a\u7ed3\u675f\u670d\u52a1\u7684\u547d\u4ee4\u800c\u4e0d\u7b49\u5f85\u5176\u5b8c\u6210\u3002 \u56e0\u4e3a\u5f53\u6b64\u5904\u8bbe\u7f6e\u7684\u547d\u4ee4\u6267\u884c\u5b8c\u4e4b\u540e\uff0c \u5269\u4f59\u7684\u8fdb\u7a0b\u4f1a\u88ab\u6309\u7167\u00a0<code class=\"varname\">KillMode=<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">KillSignal=<\/code>\u00a0\u7684\u8bbe\u7f6e\u7acb\u5373\u6740\u6b7b\uff0c \u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u3002 \u56e0\u6b64\uff0c\u8fd9\u91cc\u8bbe\u7f6e\u7684\u547d\u4ee4\u5fc5\u987b\u662f\u540c\u6b65\u64cd\u4f5c\uff0c\u800c\u4e0d\u80fd\u662f\u5f02\u6b65\u64cd\u4f5c\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u4ec5\u5728\u670d\u52a1\u786e\u5b9e\u542f\u52a8\u6210\u529f\u7684\u524d\u63d0\u4e0b\uff0c\u624d\u4f1a\u6267\u884c\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u4e2d\u8bbe\u7f6e\u7684\u547d\u4ee4\u3002 \u5982\u679c\u670d\u52a1\u4ece\u672a\u542f\u52a8\u6216\u542f\u52a8\u5931\u8d25(\u4f8b\u5982\uff0c\u4efb\u610f\u4e00\u4e2a\u00a0<code class=\"varname\">ExecStart=<\/code>,\u00a0<code class=\"varname\">ExecStartPre=<\/code>,\u00a0<code class=\"varname\">ExecStartPost=<\/code>\u00a0\u4e2d\u65e0 \"<code class=\"literal\">-<\/code>\" \u524d\u7f00\u7684\u547d\u4ee4\u6267\u884c\u5931\u8d25\u6216\u8d85\u65f6)\uff0c \u90a3\u4e48\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u5c06\u4f1a\u88ab\u8df3\u8fc7\u3002 \u5982\u679c\u60f3\u8981\u65e0\u6761\u4ef6\u7684\u5728\u670d\u52a1\u505c\u6b62\u540e\u6267\u884c\u7279\u5b9a\u7684\u52a8\u4f5c\uff0c\u90a3\u4e48\u5e94\u8be5\u4f7f\u7528\u00a0<code class=\"varname\">ExecStopPost=<\/code>\u00a0\u9009\u9879\u3002 \u5982\u679c\u670d\u52a1\u542f\u52a8\u6210\u529f\uff0c\u90a3\u4e48\u5373\u4f7f\u4e3b\u670d\u52a1\u8fdb\u7a0b\u5df2\u7ecf\u7ec8\u6b62(\u65e0\u8bba\u662f\u4e3b\u52a8\u9000\u51fa\u8fd8\u662f\u88ab\u6740\u6b7b)\uff0c\u4e5f\u4f1a\u7ee7\u7eed\u6267\u884c\u505c\u6b62\u64cd\u4f5c\u3002 \u56e0\u6b64\u505c\u6b62\u547d\u4ee4\u5fc5\u987b\u6b63\u786e\u5904\u7406\u8fd9\u79cd\u573a\u666f\uff0c\u5982\u679c systemd \u53d1\u73b0\u5728\u8c03\u7528\u505c\u6b62\u547d\u4ee4\u65f6\u4e3b\u670d\u52a1\u8fdb\u7a0b\u5df2\u7ecf\u7ec8\u6b62\uff0c\u90a3\u4e48\u5c06\u4f1a\u64a4\u9500 $MAINPID \u53d8\u91cf\u3002<\/p>\n<p>\u91cd\u542f\u670d\u52a1\u7684\u52a8\u4f5c\u88ab\u5b9e\u73b0\u4e3a\"\u5148\u505c\u6b62\u3001\u518d\u542f\u52a8\"\u3002\u6240\u4ee5\u5728\u91cd\u542f\u671f\u95f4\uff0c\u5c06\u4f1a\u6267\u884c\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">ExecStopPost=<\/code>\u00a0\u547d\u4ee4\u3002 \u63a8\u8350\u5c06\u6b64\u9009\u9879\u7528\u4e8e\u90a3\u4e9b\u5fc5\u987b\u5728\u670d\u52a1\u5e72\u51c0\u9000\u51fa\u4e4b\u524d\u6267\u884c\u7684\u547d\u4ee4(\u4f8b\u5982\u8fd8\u9700\u8981\u7ee7\u7eed\u4e0e\u4e3b\u670d\u52a1\u8fdb\u7a0b\u901a\u4fe1)\u3002\u5f53\u6b64\u9009\u9879\u8bbe\u7f6e\u7684\u547d\u4ee4\u88ab\u6267\u884c\u7684\u65f6\u5019\uff0c\u5e94\u8be5\u5047\u5b9a\u670d\u52a1\u6b63\u5904\u4e8e\u5b8c\u5168\u6b63\u5e38\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u53ef\u4ee5\u6b63\u5e38\u7684\u4e0e\u5176\u901a\u4fe1\u3002 \u5982\u679c\u60f3\u8981\u65e0\u6761\u4ef6\u7684\u5728\u670d\u52a1\u505c\u6b62\u540e\"\u6e05\u7406\u5c38\u4f53\"\uff0c\u90a3\u4e48\u5e94\u8be5\u4f7f\u7528\u00a0<code class=\"varname\">ExecStopPost=<\/code>\u00a0\u9009\u9879\u3002<\/dd>\n<dt id=\"ExecStopPost=\"><span class=\"term\"><code class=\"varname\">ExecStopPost=<\/code><\/span><\/dt>\n<dd>\u8fd9\u662f\u4e00\u4e2a\u53ef\u9009\u7684\u6307\u4ee4\uff0c \u7528\u4e8e\u8bbe\u7f6e\u5728\u8be5\u670d\u52a1\u505c\u6b62\u4e4b\u540e\u6240\u6267\u884c\u7684\u547d\u4ee4\u884c\u3002 \u8bed\u6cd5\u89c4\u5219\u4e0e\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u5b8c\u5168\u76f8\u540c\u3002 \u6ce8\u610f\uff0c\u4e0e\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u4e0d\u540c\uff0c\u65e0\u8bba\u670d\u52a1\u662f\u5426\u542f\u52a8\u6210\u529f\uff0c \u6b64\u9009\u9879\u4e2d\u8bbe\u7f6e\u7684\u547d\u4ee4\u90fd\u4f1a\u5728\u670d\u52a1\u505c\u6b62\u540e\u88ab\u65e0\u6761\u4ef6\u7684\u6267\u884c\u3002<\/p>\n<p>\u5e94\u8be5\u5c06\u6b64\u9009\u9879\u7528\u4e8e\u8bbe\u7f6e\u90a3\u4e9b\u65e0\u8bba\u670d\u52a1\u662f\u5426\u542f\u52a8\u6210\u529f\uff0c \u90fd\u5fc5\u987b\u5728\u670d\u52a1\u505c\u6b62\u540e\u65e0\u6761\u4ef6\u6267\u884c\u7684\u6e05\u7406\u64cd\u4f5c\u3002 \u6b64\u9009\u9879\u8bbe\u7f6e\u7684\u547d\u4ee4\u5fc5\u987b\u80fd\u591f\u6b63\u786e\u5904\u7406\u7531\u4e8e\u670d\u52a1\u542f\u52a8\u5931\u8d25\u800c\u9020\u6210\u7684\u5404\u79cd\u6b8b\u7f3a\u4e0d\u5168\u4ee5\u53ca\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u573a\u666f\u3002 \u7531\u4e8e\u6b64\u9009\u9879\u8bbe\u7f6e\u7684\u547d\u4ee4\u5728\u6267\u884c\u65f6\uff0c\u6574\u4e2a\u670d\u52a1\u7684\u6240\u6709\u8fdb\u7a0b\u90fd\u5df2\u7ecf\u5168\u90e8\u7ed3\u675f\uff0c \u6240\u4ee5\u65e0\u6cd5\u4e0e\u670d\u52a1\u8fdb\u884c\u4efb\u4f55\u901a\u4fe1\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u6b64\u5904\u8bbe\u7f6e\u7684\u6240\u6709\u547d\u4ee4\u5728\u88ab\u8c03\u7528\u4e4b\u540e\u90fd\u53ef\u4ee5\u8bfb\u53d6\u5982\u4e0b\u73af\u5883\u53d8\u91cf\uff1a\u00a0<code class=\"varname\">$SERVICE_RESULT<\/code>(\u670d\u52a1\u7684\u6700\u7ec8\u7ed3\u679c),\u00a0<code class=\"varname\">$EXIT_CODE<\/code>(\u670d\u52a1\u4e3b\u8fdb\u7a0b\u7684\u9000\u51fa\u7801),\u00a0<code class=\"varname\">$EXIT_STATUS<\/code>(\u670d\u52a1\u4e3b\u8fdb\u7a0b\u7684\u9000\u51fa\u72b6\u6001)\u3002 \u8be6\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.exec.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.exec<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u3002<\/dd>\n<dt id=\"RestartSec=\"><span class=\"term\"><code class=\"varname\">RestartSec=<\/code><\/span><\/dt>\n<dd>\u8bbe\u7f6e\u5728\u91cd\u542f\u670d\u52a1(<code class=\"varname\">Restart=<\/code>)\u524d\u6682\u505c\u591a\u957f\u65f6\u95f4\u3002 \u9ed8\u8ba4\u503c\u662f100\u6beb\u79d2(100ms)\u3002 \u5982\u679c\u672a\u6307\u5b9a\u65f6\u95f4\u5355\u4f4d\uff0c\u90a3\u4e48\u5c06\u89c6\u4e3a\u4ee5\u79d2\u4e3a\u5355\u4f4d\u3002 \u4f8b\u5982\u8bbe\u4e3a\"20\"\u7b49\u4ef7\u4e8e\u8bbe\u4e3a\"20s\"\u3002<\/dd>\n<dt id=\"TimeoutStartSec=\"><span class=\"term\"><code class=\"varname\">TimeoutStartSec=<\/code><\/span><\/dt>\n<dd>\u8bbe\u7f6e\u8be5\u670d\u52a1\u5141\u8bb8\u7684\u6700\u5927\u542f\u52a8\u65f6\u957f\u3002 \u5982\u679c\u5b88\u62a4\u8fdb\u7a0b\u672a\u80fd\u5728\u9650\u5b9a\u7684\u65f6\u957f\u5185\u53d1\u51fa\"\u542f\u52a8\u5b8c\u6bd5\"\u7684\u4fe1\u53f7\uff0c\u90a3\u4e48\u8be5\u670d\u52a1\u5c06\u88ab\u89c6\u4e3a\u542f\u52a8\u5931\u8d25\uff0c\u5e76\u4f1a\u88ab\u5173\u95ed\u3002 \u5982\u679c\u672a\u6307\u5b9a\u65f6\u95f4\u5355\u4f4d\uff0c\u90a3\u4e48\u5c06\u89c6\u4e3a\u4ee5\u79d2\u4e3a\u5355\u4f4d\u3002 \u4f8b\u5982\u8bbe\u4e3a\"20\"\u7b49\u4ef7\u4e8e\u8bbe\u4e3a\"20s\"\u3002 \u8bbe\u4e3a \"<code class=\"literal\">infinity<\/code>\" \u5219\u8868\u793a\u6c38\u4e0d\u8d85\u65f6\u3002 \u5f53\u00a0<code class=\"varname\">Type=oneshot<\/code>\u00a0\u65f6\uff0c \u9ed8\u8ba4\u503c\u4e3a \"<code class=\"literal\">infinity<\/code>\" (\u6c38\u4e0d\u8d85\u65f6)\uff0c \u5426\u5219\u9ed8\u8ba4\u503c\u7b49\u4e8e\u00a0<code class=\"varname\">DefaultTimeoutStartSec=<\/code>\u00a0\u7684\u503c(\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd-system.conf.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd-system.conf<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c)\u3002<\/p>\n<p>\u5982\u679c\u4e00\u4e2a\u00a0<code class=\"varname\">Type=notify<\/code>\u00a0\u670d\u52a1\u53d1\u9001\u4e86 \"<code class=\"literal\">EXTEND_TIMEOUT_USEC=\u2026<\/code>\" \u4fe1\u53f7\uff0c \u90a3\u4e48\u5141\u8bb8\u7684\u542f\u52a8\u65f6\u957f\u5c06\u4f1a\u5728\u00a0<code class=\"varname\">TimeoutStartSec=<\/code>\u00a0\u57fa\u7840\u4e0a\u7ee7\u7eed\u5ef6\u957f\u6307\u5b9a\u7684\u65f6\u957f\u3002 \u6ce8\u610f\uff0c\u5fc5\u987b\u5728\u00a0<code class=\"varname\">TimeoutStartSec=<\/code>\u00a0\u7528\u5b8c\u4e4b\u524d\u53d1\u51fa\u7b2c\u4e00\u4e2a\u5ef6\u65f6\u4fe1\u53f7\u3002\u5f53\u542f\u52a8\u65f6\u95f4\u8d85\u51fa\u00a0<code class=\"varname\">TimeoutStartSec=<\/code>\u00a0\u4e4b\u540e\uff0c\u8be5\u670d\u52a1\u53ef\u4ee5\u5728\u7ef4\u6301\u59cb\u7ec8\u4e0d\u8d85\u65f6\u7684\u524d\u63d0\u4e0b\uff0c\u4e0d\u65ad\u91cd\u590d\u53d1\u9001 \"<code class=\"literal\">EXTEND_TIMEOUT_USEC=\u2026<\/code>\" \u4fe1\u53f7\uff0c \u76f4\u5230\u5b8c\u6210\u542f\u52a8(\u53d1\u9001 \"<code class=\"literal\">READY=1<\/code>\" \u4fe1\u53f7)\u3002\u8be6\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_notify.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_notify<\/span>(3)<\/span><\/a>\u00a0\u624b\u518c\u3002<\/dd>\n<dt id=\"TimeoutStopSec=\"><span class=\"term\"><code class=\"varname\">TimeoutStopSec=<\/code><\/span><\/dt>\n<dd>\u6b64\u9009\u9879\u6709\u4e24\u4e2a\u7528\u9014\uff1a (1)\u8bbe\u7f6e\u6bcf\u4e2a\u00a0<code class=\"constant\">ExecStop=<\/code>\u00a0\u7684\u8d85\u65f6\u65f6\u957f\u3002\u5982\u679c\u5176\u4e2d\u4e4b\u4e00\u8d85\u65f6\uff0c \u90a3\u4e48\u6240\u6709\u540e\u7ee7\u7684\u00a0<code class=\"constant\">ExecStop=<\/code>\u00a0\u90fd\u4f1a\u88ab\u53d6\u6d88\uff0c\u5e76\u4e14\u8be5\u670d\u52a1\u4e5f\u4f1a\u88ab\u00a0<code class=\"constant\">SIGTERM<\/code>\u00a0\u4fe1\u53f7\u5f3a\u5236\u5173\u95ed\u3002 \u5982\u679c\u8be5\u670d\u52a1\u6ca1\u6709\u8bbe\u7f6e\u00a0<code class=\"constant\">ExecStop=<\/code>\u00a0\uff0c\u90a3\u4e48\u8be5\u670d\u52a1\u5c06\u4f1a\u7acb\u5373\u88ab\u00a0<code class=\"constant\">SIGTERM<\/code>\u00a0\u4fe1\u53f7\u5f3a\u5236\u5173\u95ed\u3002 (2)\u8bbe\u7f6e\u8be5\u670d\u52a1\u81ea\u8eab\u505c\u6b62\u7684\u8d85\u65f6\u65f6\u957f\u3002\u5982\u679c\u8d85\u65f6\uff0c\u90a3\u4e48\u8be5\u670d\u52a1\u5c06\u4f1a\u7acb\u5373\u88ab\u00a0<code class=\"constant\">SIGTERM<\/code>\u00a0\u4fe1\u53f7\u5f3a\u5236\u5173\u95ed(\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u4e2d\u7684\u00a0<code class=\"varname\">KillMode=<\/code>\u00a0\u9009\u9879)\u3002 \u5982\u679c\u672a\u6307\u5b9a\u65f6\u95f4\u5355\u4f4d\uff0c\u90a3\u4e48\u5c06\u89c6\u4e3a\u4ee5\u79d2\u4e3a\u5355\u4f4d\u3002 \u4f8b\u5982\u8bbe\u4e3a\"20\"\u7b49\u4ef7\u4e8e\u8bbe\u4e3a\"20s\"\u3002 \u8bbe\u4e3a \"<code class=\"literal\">infinity<\/code>\" \u5219\u8868\u793a\u6c38\u4e0d\u8d85\u65f6\u3002 \u9ed8\u8ba4\u503c\u7b49\u4e8e\u00a0<code class=\"varname\">DefaultTimeoutStopSec=<\/code>\u00a0\u7684\u503c(\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd-system.conf.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd-system.conf<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c)\u3002<\/p>\n<p>\u5982\u679c\u4e00\u4e2a\u00a0<code class=\"varname\">Type=notify<\/code>\u00a0\u670d\u52a1\u53d1\u9001\u4e86 \"<code class=\"literal\">EXTEND_TIMEOUT_USEC=\u2026<\/code>\" \u4fe1\u53f7\uff0c \u90a3\u4e48\u5141\u8bb8\u7684\u505c\u6b62\u65f6\u957f\u5c06\u4f1a\u5728\u00a0<code class=\"varname\">TimeoutStopSec=<\/code>\u00a0\u57fa\u7840\u4e0a\u7ee7\u7eed\u5ef6\u957f\u6307\u5b9a\u7684\u65f6\u957f\u3002 \u6ce8\u610f\uff0c\u5fc5\u987b\u5728\u00a0<code class=\"varname\">TimeoutStopSec=<\/code>\u00a0\u7528\u5b8c\u4e4b\u524d\u53d1\u51fa\u7b2c\u4e00\u4e2a\u5ef6\u65f6\u4fe1\u53f7\u3002\u5f53\u505c\u6b62\u65f6\u95f4\u8d85\u51fa\u00a0<code class=\"varname\">TimeoutStopSec=<\/code>\u00a0\u4e4b\u540e\uff0c\u8be5\u670d\u52a1\u53ef\u4ee5\u5728\u7ef4\u6301\u59cb\u7ec8\u4e0d\u8d85\u65f6\u7684\u524d\u63d0\u4e0b\uff0c\u4e0d\u65ad\u91cd\u590d\u53d1\u9001 \"<code class=\"literal\">EXTEND_TIMEOUT_USEC=\u2026<\/code>\" \u4fe1\u53f7\uff0c\u76f4\u5230\u5b8c\u6210\u505c\u6b62\u3002 \u8be6\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_notify.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_notify<\/span>(3)<\/span><\/a>\u00a0\u624b\u518c\u3002<\/dd>\n<dt id=\"TimeoutSec=\"><span class=\"term\"><code class=\"varname\">TimeoutSec=<\/code><\/span><\/dt>\n<dd>\u4e00\u4e2a\u540c\u65f6\u8bbe\u7f6e\u00a0<code class=\"varname\">TimeoutStartSec=<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">TimeoutStopSec=<\/code>\u00a0\u7684\u5feb\u6377\u65b9\u5f0f\u3002<\/dd>\n<dt id=\"RuntimeMaxSec=\"><span class=\"term\"><code class=\"varname\">RuntimeMaxSec=<\/code><\/span><\/dt>\n<dd>\u5141\u8bb8\u670d\u52a1\u6301\u7eed\u8fd0\u884c\u7684\u6700\u5927\u65f6\u957f\u3002 \u5982\u679c\u670d\u52a1\u6301\u7eed\u8fd0\u884c\u8d85\u8fc7\u4e86\u6b64\u5904\u9650\u5236\u7684\u65f6\u957f\uff0c\u90a3\u4e48\u8be5\u670d\u52a1\u5c06\u4f1a\u88ab\u5f3a\u5236\u7ec8\u6b62\uff0c\u540c\u65f6\u5c06\u8be5\u670d\u52a1\u53d8\u4e3a\u5931\u8d25(failed)\u72b6\u6001\u3002 \u6ce8\u610f\uff0c\u6b64\u9009\u9879\u5bf9\u00a0<code class=\"varname\">Type=oneshot<\/code>\u00a0\u7c7b\u578b\u7684\u670d\u52a1\u65e0\u6548\uff0c\u56e0\u4e3a\u5b83\u4eec\u4f1a\u5728\u542f\u52a8\u5b8c\u6210\u540e\u7acb\u5373\u7ec8\u6b62\u3002 \u9ed8\u8ba4\u503c\u4e3a \"<code class=\"literal\">infinity<\/code>\" (\u4e0d\u9650\u65f6\u957f)\u3002<\/p>\n<p>\u5982\u679c\u4e00\u4e2a\u00a0<code class=\"varname\">Type=notify<\/code>\u00a0\u670d\u52a1\u53d1\u9001\u4e86 \"<code class=\"literal\">EXTEND_TIMEOUT_USEC=\u2026<\/code>\" \u4fe1\u53f7\uff0c \u90a3\u4e48\u5141\u8bb8\u7684\u8fd0\u884c\u65f6\u957f\u5c06\u4f1a\u5728\u00a0<code class=\"varname\">RuntimeMaxSec=<\/code>\u00a0\u57fa\u7840\u4e0a\u7ee7\u7eed\u5ef6\u957f\u6307\u5b9a\u7684\u65f6\u957f\u3002 \u6ce8\u610f\uff0c\u5fc5\u987b\u5728\u00a0<code class=\"varname\">RuntimeMaxSec=<\/code>\u00a0\u7528\u5b8c\u4e4b\u524d\u53d1\u51fa\u7b2c\u4e00\u4e2a\u5ef6\u65f6\u4fe1\u53f7\u3002\u5f53\u8fd0\u884c\u65f6\u95f4\u8d85\u51fa\u00a0<code class=\"varname\">RuntimeMaxSec=<\/code>\u00a0\u4e4b\u540e\uff0c\u8be5\u670d\u52a1\u53ef\u4ee5\u5728\u7ef4\u6301\u59cb\u7ec8\u4e0d\u8d85\u65f6\u7684\u524d\u63d0\u4e0b\uff0c\u4e0d\u65ad\u91cd\u590d\u53d1\u9001 \"<code class=\"literal\">EXTEND_TIMEOUT_USEC=\u2026<\/code>\" \u4fe1\u53f7\uff0c \u76f4\u5230\u8fd0\u884c\u7ed3\u675f(\u53d1\u9001 \"<code class=\"literal\">STOPPING=1<\/code>\" \u4fe1\u53f7\u6216\u76f4\u63a5\u9000\u51fa)\u3002\u8be6\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_notify.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_notify<\/span>(3)<\/span><\/a>\u00a0\u624b\u518c\u3002<\/dd>\n<dt id=\"WatchdogSec=\"><span class=\"term\"><code class=\"varname\">WatchdogSec=<\/code><\/span><\/dt>\n<dd>\u8bbe\u7f6e\u8be5\u670d\u52a1\u7684\u770b\u95e8\u72d7(watchdog)\u7684\u8d85\u65f6\u65f6\u957f\u3002 \u770b\u95e8\u72d7\u5c06\u5728\u670d\u52a1\u6210\u529f\u542f\u52a8\u4e4b\u540e\u88ab\u542f\u52a8\u3002 \u8be5\u670d\u52a1\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u5fc5\u987b\u5468\u671f\u6027\u7684\u4ee5 \"<code class=\"literal\">WATCHDOG=1<\/code>\" (\"keep-alive ping\")\u8c03\u7528\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_notify.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_notify<\/span>(3)<\/span><\/a>\u00a0\u51fd\u6570\u3002 \u5982\u679c\u5728\u4e24\u6b21\u8c03\u7528\u4e4b\u95f4\u7684\u65f6\u95f4\u95f4\u9694\u5927\u4e8e\u8fd9\u91cc\u8bbe\u5b9a\u7684\u503c\uff0c \u90a3\u4e48\u8be5\u670d\u52a1\u5c06\u88ab\u89c6\u4e3a\u5931\u8d25(failed)\u72b6\u6001\uff0c \u5e76\u4f1a\u88ab\u5f3a\u5236\u4f7f\u7528\u00a0<code class=\"varname\">WatchdogSignal=<\/code>\u00a0\u4fe1\u53f7(\u9ed8\u8ba4\u4e3a\u00a0<code class=\"constant\">SIGABRT<\/code>)\u5173\u95ed\u3002 \u901a\u8fc7\u5c06\u00a0<code class=\"varname\">Restart=<\/code>\u00a0\u8bbe\u4e3a\u00a0<code class=\"option\">on-failure<\/code>,\u00a0<code class=\"option\">on-watchdog<\/code>,\u00a0<code class=\"option\">on-abnormal<\/code>,\u00a0<code class=\"option\">always<\/code>\u00a0\u4e4b\u4e00\uff0c \u53ef\u4ee5\u5b9e\u73b0\u5728\u5931\u8d25\u72b6\u6001\u4e0b\u7684\u81ea\u52a8\u91cd\u542f\u8be5\u670d\u52a1\u3002 \u8fd9\u91cc\u8bbe\u7f6e\u7684\u503c\u5c06\u4f1a\u901a\u8fc7\u00a0<code class=\"varname\">WATCHDOG_USEC=<\/code>\u00a0\u73af\u5883\u53d8\u91cf\u4f20\u9012\u7ed9\u5b88\u62a4\u8fdb\u7a0b\uff0c \u8fd9\u6837\u5c31\u5141\u8bb8\u90a3\u4e9b\u652f\u6301\u770b\u95e8\u72d7\u7684\u670d\u52a1\u81ea\u52a8\u542f\u7528\"keep-alive ping\"\u3002 \u5982\u679c\u8bbe\u7f6e\u4e86\u6b64\u9009\u9879\uff0c \u90a3\u4e48\u00a0<code class=\"varname\">NotifyAccess=<\/code>\u00a0\u5c06\u53ea\u80fd\u8bbe\u4e3a\u975e\u00a0<code class=\"option\">none<\/code>\u00a0\u503c\u3002 \u5982\u679c\u00a0<code class=\"varname\">NotifyAccess=<\/code>\u00a0\u672a\u8bbe\u7f6e\uff0c\u6216\u8005\u5df2\u7ecf\u88ab\u660e\u786e\u8bbe\u4e3a\u00a0<code class=\"option\">none<\/code>\u00a0\uff0c \u90a3\u4e48\u5c06\u4f1a\u88ab\u81ea\u52a8\u5f3a\u5236\u4fee\u6539\u4e3a\u00a0<code class=\"option\">main<\/code>\u00a0\u3002 \u5982\u679c\u672a\u6307\u5b9a\u65f6\u95f4\u5355\u4f4d\uff0c\u90a3\u4e48\u5c06\u89c6\u4e3a\u4ee5\u79d2\u4e3a\u5355\u4f4d\u3002 \u4f8b\u5982\u8bbe\u4e3a\"20\"\u7b49\u4ef7\u4e8e\u8bbe\u4e3a\"20s\"\u3002 \u9ed8\u8ba4\u503c\"0\"\u8868\u793a\u7981\u7528\u770b\u95e8\u72d7\u529f\u80fd\u3002 \u8be6\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_watchdog_enabled.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_watchdog_enabled<\/span>(3)<\/span><\/a>\u00a0\u4e0e\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_event_set_watchdog.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_event_set_watchdog<\/span>(3)<\/span><\/a>\u00a0\u624b\u518c\u3002<\/dd>\n<dt id=\"Restart=\"><span class=\"term\"><code class=\"varname\">Restart=<\/code><\/span><\/dt>\n<dd>\u5f53\u670d\u52a1\u8fdb\u7a0b \u6b63\u5e38\u9000\u51fa\u3001\u5f02\u5e38\u9000\u51fa\u3001\u88ab\u6740\u6b7b\u3001\u8d85\u65f6\u7684\u65f6\u5019\uff0c \u662f\u5426\u91cd\u65b0\u542f\u52a8\u8be5\u670d\u52a1\u3002 \u6240\u8c13\"\u670d\u52a1\u8fdb\u7a0b\" \u662f\u6307\u00a0<code class=\"varname\">ExecStartPre=<\/code>,\u00a0<code class=\"varname\">ExecStartPost=<\/code>,\u00a0<code class=\"varname\">ExecStop=<\/code>,\u00a0<code class=\"varname\">ExecStopPost=<\/code>,\u00a0<code class=\"varname\">ExecReload=<\/code>\u00a0\u4e2d\u8bbe\u7f6e\u7684\u8fdb\u7a0b\u3002 \u5f53\u8fdb\u7a0b\u662f\u7531\u4e8e systemd \u7684\u6b63\u5e38\u64cd\u4f5c(\u4f8b\u5982\u00a0<span class=\"command\"><strong>systemctl stop|restart<\/strong><\/span>)\u800c\u88ab\u505c\u6b62\u65f6\uff0c \u8be5\u670d\u52a1\u4e0d\u4f1a\u88ab\u91cd\u65b0\u542f\u52a8\u3002 \u6240\u8c13\"\u8d85\u65f6\"\u53ef\u4ee5\u662f\u770b\u95e8\u72d7\u7684\"keep-alive ping\"\u8d85\u65f6\uff0c \u4e5f\u53ef\u4ee5\u662f\u00a0<span class=\"command\"><strong>systemctl start|reload|stop<\/strong><\/span>\u00a0\u64cd\u4f5c\u8d85\u65f6\u3002<\/p>\n<p>\u8be5\u9009\u9879\u7684\u503c\u53ef\u4ee5\u53d6\u00a0<code class=\"option\">no<\/code>,\u00a0<code class=\"option\">on-success<\/code>,\u00a0<code class=\"option\">on-failure<\/code>,\u00a0<code class=\"option\">on-abnormal<\/code>,\u00a0<code class=\"option\">on-watchdog<\/code>,\u00a0<code class=\"option\">on-abort<\/code>,\u00a0<code class=\"option\">always<\/code>\u00a0\u4e4b\u4e00\u3002\u00a0<code class=\"option\">no<\/code>(\u9ed8\u8ba4\u503c) \u8868\u793a\u4e0d\u4f1a\u88ab\u91cd\u542f\u3002\u00a0<code class=\"option\">always<\/code>\u00a0\u8868\u793a\u4f1a\u88ab\u65e0\u6761\u4ef6\u7684\u91cd\u542f\u3002\u00a0<code class=\"option\">on-success<\/code>\u00a0\u8868\u793a\u4ec5\u5728\u670d\u52a1\u8fdb\u7a0b\u6b63\u5e38\u9000\u51fa\u65f6\u91cd\u542f\uff0c \u6240\u8c13\"\u6b63\u5e38\u9000\u51fa\"\u662f\u6307\uff1a\u9000\u51fa\u7801\u4e3a\"0\"\uff0c \u6216\u8005\u8fdb\u7a0b\u6536\u5230\u00a0<code class=\"constant\">SIGHUP<\/code>,\u00a0<code class=\"constant\">SIGINT<\/code>,\u00a0<code class=\"constant\">SIGTERM<\/code>,\u00a0<code class=\"constant\">SIGPIPE<\/code>\u00a0\u4fe1\u53f7\u4e4b\u4e00\uff0c \u5e76\u4e14 \u9000\u51fa\u7801\u7b26\u5408\u00a0<code class=\"varname\">SuccessExitStatus=<\/code>\u00a0\u7684\u8bbe\u7f6e\u3002\u00a0<code class=\"option\">on-failure<\/code>\u00a0\u8868\u793a \u4ec5\u5728\u670d\u52a1\u8fdb\u7a0b\u5f02\u5e38\u9000\u51fa\u65f6\u91cd\u542f\uff0c \u6240\u8c13\"\u5f02\u5e38\u9000\u51fa\" \u662f\u6307\uff1a \u9000\u51fa\u7801\u4e0d\u4e3a\"0\"\uff0c \u6216\u8005 \u8fdb\u7a0b\u88ab\u5f3a\u5236\u6740\u6b7b(\u5305\u62ec \"core dump\"\u4ee5\u53ca\u6536\u5230\u00a0<code class=\"constant\">SIGHUP<\/code>,\u00a0<code class=\"constant\">SIGINT<\/code>,\u00a0<code class=\"constant\">SIGTERM<\/code>,\u00a0<code class=\"constant\">SIGPIPE<\/code>\u00a0\u4e4b\u5916\u7684\u5176\u4ed6\u4fe1\u53f7)\uff0c \u6216\u8005\u8fdb\u7a0b\u7531\u4e8e \u770b\u95e8\u72d7\u8d85\u65f6 \u6216\u8005 systemd \u7684\u64cd\u4f5c\u8d85\u65f6 \u800c\u88ab\u6740\u6b7b\u3002<\/p>\n<div class=\"table\">\n<p><a name=\"id-1.8.3.17.2.3\"><\/a><\/p>\n<p class=\"title\"><b>\u8868\u00a02.\u00a0<code class=\"varname\">Restart=<\/code>\u00a0\u7684\u8bbe\u7f6e\u5206\u522b\u5bf9\u5e94\u4e8e\u54ea\u4e9b\u9000\u51fa\u539f\u56e0<\/b><\/p>\n<div class=\"table-contents\">\n<table class=\"table\" border=\"1\" summary=\"Restart= \u7684\u8bbe\u7f6e\u5206\u522b\u5bf9\u5e94\u4e8e\u54ea\u4e9b\u9000\u51fa\u539f\u56e0\">\n<colgroup>\n<col class=\"path\" \/>\n<col class=\"expl\" \/><\/colgroup>\n<thead>\n<tr>\n<th>\u9000\u51fa\u539f\u56e0(\u2193) | Restart= (\u2192)<\/th>\n<th><code class=\"option\">no<\/code><\/th>\n<th><code class=\"option\">always<\/code><\/th>\n<th><code class=\"option\">on-success<\/code><\/th>\n<th><code class=\"option\">on-failure<\/code><\/th>\n<th><code class=\"option\">on-abnormal<\/code><\/th>\n<th><code class=\"option\">on-abort<\/code><\/th>\n<th><code class=\"option\">on-watchdog<\/code><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6b63\u5e38\u9000\u51fa<\/td>\n<td><\/td>\n<td>X<\/td>\n<td>X<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u9000\u51fa\u7801\u4e0d\u4e3a\"0\"<\/td>\n<td><\/td>\n<td>X<\/td>\n<td><\/td>\n<td>X<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u8fdb\u7a0b\u88ab\u5f3a\u5236\u6740\u6b7b<\/td>\n<td><\/td>\n<td>X<\/td>\n<td><\/td>\n<td>X<\/td>\n<td>X<\/td>\n<td>X<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>systemd \u64cd\u4f5c\u8d85\u65f6<\/td>\n<td><\/td>\n<td>X<\/td>\n<td><\/td>\n<td>X<\/td>\n<td>X<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>\u770b\u95e8\u72d7\u8d85\u65f6<\/td>\n<td><\/td>\n<td>X<\/td>\n<td><\/td>\n<td>X<\/td>\n<td>X<\/td>\n<td><\/td>\n<td>X<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p><br class=\"table-break\" \/>\u6ce8\u610f\u5982\u4e0b\u4f8b\u5916\u60c5\u51b5(\u8be6\u89c1\u4e0b\u6587)\uff1a (1)\u00a0<code class=\"varname\">RestartPreventExitStatus=<\/code>\u00a0\u4e2d\u5217\u51fa\u7684\u9000\u51fa\u7801\u6216\u4fe1\u53f7\u6c38\u8fdc\u4e0d\u4f1a\u5bfc\u81f4\u8be5\u670d\u52a1\u88ab\u91cd\u542f\u3002 (2) \u88ab\u00a0<span class=\"command\"><strong>systemctl stop<\/strong><\/span>\u00a0\u547d\u4ee4\u6216\u7b49\u4ef7\u7684\u64cd\u4f5c\u505c\u6b62\u7684\u670d\u52a1\u6c38\u8fdc\u4e0d\u4f1a\u88ab\u91cd\u542f\u3002 (3)\u00a0<code class=\"varname\">RestartForceExitStatus=<\/code>\u00a0\u4e2d\u5217\u51fa\u7684\u9000\u51fa\u7801\u6216\u4fe1\u53f7\u5c06\u4f1a \u65e0\u6761\u4ef6\u7684\u5bfc\u81f4\u8be5\u670d\u52a1\u88ab\u91cd\u542f\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u670d\u52a1\u7684\u91cd\u542f\u9891\u7387\u4ecd\u7136\u4f1a\u53d7\u5230\u7531\u00a0<code class=\"varname\">StartLimitIntervalSec=<\/code>\u00a0\u4e0e\u00a0<code class=\"varname\">StartLimitBurst=<\/code>\u00a0\u5b9a\u4e49\u7684\u542f\u52a8\u9891\u7387\u7684\u5236\u7ea6\u3002\u8be6\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.unit.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.unit<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u3002\u53ea\u6709\u5728\u8fbe\u5230\u542f\u52a8\u9891\u7387\u9650\u5236\u4e4b\u540e\uff0c \u91cd\u65b0\u542f\u52a8\u7684\u670d\u52a1\u624d\u4f1a\u8fdb\u5165\u5931\u8d25\u72b6\u6001\u3002<\/p>\n<p>\u5bf9\u4e8e\u9700\u8981\u957f\u671f\u6301\u7eed\u8fd0\u884c\u7684\u5b88\u62a4\u8fdb\u7a0b\uff0c \u63a8\u8350\u8bbe\u4e3a\u00a0<code class=\"option\">on-failure<\/code>\u00a0\u4ee5\u589e\u5f3a\u53ef\u7528\u6027\u3002 \u5bf9\u4e8e\u81ea\u8eab\u53ef\u4ee5\u81ea\u4e3b\u9009\u62e9\u4f55\u65f6\u9000\u51fa\u7684\u670d\u52a1\uff0c \u63a8\u8350\u8bbe\u4e3a\u00a0<code class=\"option\">on-abnormal<\/code><\/dd>\n<dt id=\"SuccessExitStatus=\"><span class=\"term\"><code class=\"varname\">SuccessExitStatus=<\/code><\/span><\/dt>\n<dd>\u989d\u5916\u5b9a\u4e49\u5176\u4ed6\u7684\u8fdb\u7a0b\"\u6b63\u5e38\u9000\u51fa\"\u72b6\u6001\u3002 \u4e5f\u5c31\u662f\uff0c\u5728\u9000\u51fa\u7801\"0\"\u3001\u4ee5\u53ca\u8868\u793a\"\u6b63\u5e38\u9000\u51fa\"\u7684\u00a0<code class=\"constant\">SIGHUP<\/code>,\u00a0<code class=\"constant\">SIGINT<\/code>,\u00a0<code class=\"constant\">SIGTERM<\/code>,\u00a0<code class=\"constant\">SIGPIPE<\/code>\u00a0\u4fe1\u53f7\u4e4b\u5916\uff0c \u518d\u989d\u5916\u6dfb\u52a0\u4e00\u7ec4\u8868\u793a\"\u6b63\u5e38\u9000\u51fa\"\u7684\u9000\u51fa\u7801\u6216\u4fe1\u53f7\u3002 \u53ef\u4ee5\u8bbe\u4e3a\u4e00\u7cfb\u5217 \u4ee5\u7a7a\u683c\u5206\u9694\u7684\u6570\u5b57\u9000\u51fa\u7801\u6216\u8005\u4fe1\u53f7\u540d\u79f0\uff0c \u4f8b\u5982\uff1a<\/p>\n<pre class=\"programlisting\">SuccessExitStatus=1 2 8 SIGKILL<\/pre>\n<p>\u8868\u793a\u5f53\u8fdb\u7a0b\u7684\u9000\u51fa\u7801\u662f 1, 2, 8 \u6216\u88ab\u00a0<code class=\"constant\">SIGKILL<\/code>\u00a0\u4fe1\u53f7\u7ec8\u6b62\u65f6\uff0c \u90fd\u53ef\u4ee5\u89c6\u4e3a\"\u6b63\u5e38\u9000\u51fa\"\u3002<\/p>\n<p>\u5982\u679c\u591a\u6b21\u4f7f\u7528\u6b64\u9009\u9879\uff0c \u90a3\u4e48\u6700\u7ec8\u7684\u7ed3\u679c\u5c06\u662f\u591a\u4e2a\u5217\u8868\u7684\u5408\u5e76\u3002 \u5982\u679c\u5c06\u6b64\u9009\u9879\u8bbe\u4e3a\u7a7a\uff0c \u90a3\u4e48\u5148\u524d\u8bbe\u7f6e\u7684\u5217\u8868 \u5c06\u88ab\u6e05\u7a7a\u3002<\/dd>\n<dt id=\"RestartPreventExitStatus=\"><span class=\"term\"><code class=\"varname\">RestartPreventExitStatus=<\/code><\/span><\/dt>\n<dd>\u53ef\u4ee5\u8bbe\u4e3a\u4e00\u7cfb\u5217 \u4ee5\u7a7a\u683c\u5206\u9694\u7684\u6570\u5b57\u9000\u51fa\u7801\u6216\u4fe1\u53f7\u540d\u79f0\uff0c \u5f53\u8fdb\u7a0b\u7684\u9000\u51fa\u7801\u6216\u6536\u5230\u7684\u4fe1\u53f7\u4e0e\u6b64\u5904\u7684\u8bbe\u7f6e\u5339\u914d\u65f6\uff0c \u65e0\u8bba\u00a0<code class=\"varname\">Restart=<\/code>\u00a0\u9009\u9879 \u662f\u5982\u4f55\u8bbe\u7f6e\u7684\uff0c \u8be5\u670d\u52a1\u90fd\u5c06\u65e0\u6761\u4ef6\u7684 \u7981\u6b62\u91cd\u65b0\u542f\u52a8\u3002 \u4f8b\u5982\uff1a<\/p>\n<pre class=\"programlisting\">RestartPreventExitStatus=1 6 SIGABRT<\/pre>\n<p>\u53ef\u4ee5\u786e\u4fdd\u9000\u51fa\u7801 1, 6 \u4e0e\u00a0<code class=\"constant\">SIGABRT<\/code>\u00a0\u4fe1\u53f7 \u4e0d\u4f1a\u5bfc\u81f4\u8be5\u670d\u52a1\u88ab\u81ea\u52a8\u91cd\u542f\u3002 \u9ed8\u8ba4\u503c\u4e3a\u7a7a\uff0c \u8868\u793a\u5b8c\u5168\u9075\u5b88\u00a0<code class=\"varname\">Restart=<\/code>\u00a0\u7684\u8bbe\u7f6e\u3002 \u5982\u679c\u591a\u6b21\u4f7f\u7528\u6b64\u9009\u9879\uff0c\u90a3\u4e48\u6700\u7ec8\u7684\u7ed3\u679c\u5c06\u662f\u591a\u4e2a\u5217\u8868\u7684\u5408\u5e76\u3002 \u5982\u679c\u5c06\u6b64\u9009\u9879\u8bbe\u4e3a\u7a7a\uff0c\u90a3\u4e48\u5148\u524d\u8bbe\u7f6e\u7684\u5217\u8868\u5c06\u88ab\u6e05\u7a7a\u3002<\/dd>\n<dt id=\"RestartForceExitStatus=\"><span class=\"term\"><code class=\"varname\">RestartForceExitStatus=<\/code><\/span><\/dt>\n<dd>\u53ef\u4ee5\u8bbe\u4e3a\u4e00\u7cfb\u5217\u4ee5\u7a7a\u683c\u5206\u9694\u7684\u6570\u5b57\u9000\u51fa\u7801\u6216\u4fe1\u53f7\u540d\u79f0\uff0c \u5f53\u8fdb\u7a0b\u7684\u9000\u51fa\u7801\u6216\u6536\u5230\u7684\u4fe1\u53f7\u4e0e\u6b64\u5904\u7684\u8bbe\u7f6e\u5339\u914d\u65f6\uff0c \u65e0\u8bba\u00a0<code class=\"varname\">Restart=<\/code>\u00a0\u662f\u5982\u4f55\u8bbe\u7f6e\u7684\uff0c\u8be5\u670d\u52a1\u90fd\u5c06\u65e0\u6761\u4ef6\u7684\u88ab\u81ea\u52a8\u91cd\u65b0\u542f\u52a8\u3002 \u9ed8\u8ba4\u503c\u4e3a\u7a7a\uff0c\u8868\u793a\u5b8c\u5168\u9075\u5b88\u00a0<code class=\"varname\">Restart=<\/code>\u00a0\u7684\u8bbe\u7f6e\u3002 \u5982\u679c\u591a\u6b21\u4f7f\u7528\u6b64\u9009\u9879\uff0c\u90a3\u4e48\u6700\u7ec8\u7684\u7ed3\u679c\u5c06\u662f\u591a\u4e2a\u5217\u8868\u7684\u5408\u5e76\u3002 \u5982\u679c\u5c06\u6b64\u9009\u9879\u8bbe\u4e3a\u7a7a\uff0c\u90a3\u4e48\u5148\u524d\u8bbe\u7f6e\u7684\u5217\u8868\u5c06\u88ab\u6e05\u7a7a\u3002<\/dd>\n<dt id=\"RootDirectoryStartOnly=\"><span class=\"term\"><code class=\"varname\">RootDirectoryStartOnly=<\/code><\/span><\/dt>\n<dd>\u63a5\u53d7\u4e00\u4e2a\u5e03\u5c14\u503c\u3002 \u8bbe\u4e3a yes \u8868\u793a\u6839\u76ee\u5f55\u00a0<code class=\"varname\">RootDirectory=<\/code>\u00a0\u9009\u9879(\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.exec.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.exec<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c) \u4ec5\u5bf9\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u4e2d\u7684\u7a0b\u5e8f\u6709\u6548\uff0c \u800c\u5bf9\u00a0<code class=\"varname\">ExecStartPre=<\/code>,\u00a0<code class=\"varname\">ExecStartPost=<\/code>,\u00a0<code class=\"varname\">ExecReload=<\/code>,\u00a0<code class=\"varname\">ExecStop=<\/code>,\u00a0<code class=\"varname\">ExecStopPost=<\/code>\u00a0\u4e2d\u7684\u7a0b\u5e8f\u65e0\u6548\u3002 \u9ed8\u8ba4\u503c no \u8868\u793a\u6839\u76ee\u5f55\u5bf9\u6240\u6709\u00a0<code class=\"varname\">Exec*=<\/code>\u00a0\u7cfb\u5217\u9009\u9879\u4e2d\u7684\u7a0b\u5e8f\u90fd\u6709\u6548\u3002<\/dd>\n<dt id=\"NonBlocking=\"><span class=\"term\"><code class=\"varname\">NonBlocking=<\/code><\/span><\/dt>\n<dd>\u662f\u5426\u4e3a\u6240\u6709\u57fa\u4e8e\u5957\u63a5\u5b57\u542f\u52a8\u4f20\u9012\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u8bbe\u7f6e\u975e\u963b\u585e\u6807\u8bb0(<code class=\"constant\">O_NONBLOCK<\/code>)\u3002 \u8bbe\u4e3a yes \u8868\u793a\u9664\u4e86\u901a\u8fc7\u00a0<code class=\"varname\">FileDescriptorStoreMax=<\/code>\u00a0\u5f15\u5165\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e4b\u5916\uff0c \u6240\u6709 \u22653 \u7684\u6587\u4ef6\u63cf\u8ff0\u7b26(\u975e stdin, stdout, stderr \u6587\u4ef6\u63cf\u8ff0\u7b26)\u90fd\u5c06\u88ab\u8bbe\u4e3a\u975e\u963b\u585e\u6a21\u5f0f\u3002 \u8be5\u9009\u9879\u4ec5\u5728\u4e0e socket \u5355\u5143 (<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.socket.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.socket<\/span>(5)<\/span><\/a>) \u8054\u7528\u7684\u65f6\u5019\u624d\u6709\u610f\u4e49\u3002 \u5bf9\u4e8e\u90a3\u4e9b\u5148\u524d\u5df2\u7ecf\u901a\u8fc7\u00a0<code class=\"varname\">FileDescriptorStoreMax=<\/code>\u00a0\u5f15\u5165\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u5219\u6beb\u65e0\u5f71\u54cd\u3002 \u9ed8\u8ba4\u503c\u4e3a no<\/dd>\n<dt id=\"NotifyAccess=\"><span class=\"term\"><code class=\"varname\">NotifyAccess=<\/code><\/span><\/dt>\n<dd>\u8bbe\u7f6e\u901a\u8fc7\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_notify.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_notify<\/span>(3)<\/span><\/a>\u00a0\u8bbf\u95ee\u670d\u52a1\u72b6\u6001\u901a\u77e5\u5957\u63a5\u5b57\u7684\u6a21\u5f0f\u3002 \u53ef\u4ee5\u8bbe\u4e3a\u00a0<code class=\"option\">none<\/code>(\u9ed8\u8ba4\u503c),\u00a0<code class=\"option\">main<\/code>,\u00a0<code class=\"option\">exec<\/code>,\u00a0<code class=\"option\">all<\/code>\u00a0\u4e4b\u4e00\u3002\u00a0<code class=\"option\">none<\/code>\u00a0\u8868\u793a\u4e0d\u66f4\u65b0\u4efb\u4f55\u5b88\u62a4\u8fdb\u7a0b\u7684\u72b6\u6001\uff0c\u5ffd\u7565\u6240\u6709\u72b6\u6001\u66f4\u65b0\u6d88\u606f\u3002\u00a0<code class=\"option\">main<\/code>\u00a0\u8868\u793a\u4ec5\u63a5\u53d7\u4e3b\u8fdb\u7a0b\u7684\u72b6\u6001\u66f4\u65b0\u6d88\u606f\u3002\u00a0<code class=\"option\">exec<\/code>\u00a0\u8868\u793a\u4ec5\u63a5\u53d7\u4e3b\u8fdb\u7a0b\u4ee5\u53ca\u00a0<code class=\"varname\">Exec*=<\/code>\u00a0\u8fdb\u7a0b\u7684\u72b6\u6001\u66f4\u65b0\u6d88\u606f\u3002\u00a0<code class=\"option\">all<\/code>\u00a0\u8868\u793a\u63a5\u53d7\u8be5\u670d\u52a1cgroup\u5185\u6240\u6709\u8fdb\u7a0b\u7684\u72b6\u6001\u66f4\u65b0\u6d88\u606f\u3002 \u5f53\u8bbe\u7f6e\u4e86\u00a0<code class=\"varname\">Type=notify<\/code>\u00a0\u6216\u00a0<code class=\"varname\">WatchdogSec=<\/code>\u00a0\u7684\u65f6\u5019(\u89c1\u524d\u6587)\uff0c\u6b64\u9009\u9879\u5c06\u53ea\u80fd\u8bbe\u4e3a\u975e\u00a0<code class=\"option\">none<\/code>\u00a0\u503c\u3002 \u5982\u679c\u00a0<code class=\"varname\">NotifyAccess=<\/code>\u00a0\u672a\u8bbe\u7f6e\uff0c\u6216\u8005\u5df2\u7ecf\u88ab\u660e\u786e\u8bbe\u4e3a\u00a0<code class=\"option\">none<\/code>\u00a0\uff0c \u90a3\u4e48\u5c06\u4f1a\u88ab\u81ea\u52a8\u5f3a\u5236\u4fee\u6539\u4e3a\u00a0<code class=\"option\">main<\/code>\u00a0\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u670d\u52a1\u5355\u5143\u7684\u00a0<code class=\"function\">sd_notify()<\/code>\u00a0\u901a\u77e5\u80fd\u591f\u6b63\u5e38\u5de5\u4f5c\u7684\u524d\u63d0\uff0c \u662f\u5fc5\u987b\u6ee1\u8db3\u5982\u4e0b\u4e24\u4e2a\u6761\u4ef6\u4e4b\u4e00\uff1a (1)\u5728 PID=1 \u7684\u8fdb\u7a0b\u5904\u7406\u901a\u77e5\u6d88\u606f\u65f6\uff0c\u53d1\u9001\u8be5\u901a\u77e5\u7684\u8fdb\u7a0b\u4f9d\u7136\u5728\u8fd0\u884c\uff1b (2)\u53d1\u9001\u8be5\u901a\u77e5\u7684\u8fdb\u7a0b\u662f systemd \u6d3e\u751f\u7684\u5b50\u8fdb\u7a0b(\u4e5f\u5c31\u662f\u5339\u914d\u00a0<code class=\"option\">main<\/code>\u00a0\u6216\u00a0<code class=\"option\">exec<\/code>\u00a0\u7684\u8fdb\u7a0b)\u3002 \u5982\u679c\u670d\u52a1\u5355\u5143\u4e2d\u7684\u67d0\u4e2a\u8f85\u52a9\u8fdb\u7a0b\u5728\u53d1\u9001\u4e86\u00a0<code class=\"function\">sd_notify()<\/code>\u00a0\u901a\u77e5\u4e4b\u540e\u5c31\u7acb\u5373\u9000\u51fa\u4e86\uff0c \u90a3\u4e48 systemd \u5c06\u6709\u53ef\u80fd\u6765\u4e0d\u53ca\u5c06\u8be5\u901a\u77e5\u5173\u8054\u5230\u8fd9\u4e2a\u670d\u52a1\u5355\u5143\u4e0a\u3002 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5373\u4f7f\u660e\u786e\u8bbe\u7f6e\u4e86\u00a0<code class=\"varname\">NotifyAccess=all<\/code>\u00a0\uff0c \u8be5\u901a\u77e5\u4e5f\u53ef\u80fd\u4f1a\u88ab\u5ffd\u7565\u6389\u3002<\/dd>\n<dt id=\"Sockets=\"><span class=\"term\"><code class=\"varname\">Sockets=<\/code><\/span><\/dt>\n<dd>\u8bbe\u7f6e\u4e00\u4e2a socket \u5355\u5143\u7684\u540d\u79f0\uff0c \u8868\u793a\u8be5\u670d\u52a1\u5728\u542f\u52a8\u65f6\u5e94\u5f53\u4ece\u5b83\u7ee7\u627f\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002 \u901a\u5e38\u5e76\u4e0d\u9700\u8981\u660e\u786e\u8bbe\u7f6e\u6b64\u9009\u9879\uff0c \u56e0\u4e3a\u6240\u6709\u4e0e\u8be5\u670d\u52a1\u540c\u540d(\u4e0d\u7b97\u540e\u7f00)\u7684 socket \u5355\u5143\u7684\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c \u90fd\u4f1a\u88ab\u81ea\u52a8\u7684 \u4f20\u9012\u7ed9\u6d3e\u751f\u8fdb\u7a0b\u3002<\/p>\n<p>\u6ce8\u610f\uff1a (1)\u540c\u4e00\u4e2a\u5957\u63a5\u5b57\u6587\u4ef6\u63cf\u8ff0\u7b26\u53ef\u4ee5\u88ab\u4f20\u9012\u7ed9\u591a\u4e2a\u4e0d\u540c\u7684\u8fdb\u7a0b(\u670d\u52a1)\u3002 (2)\u5f53\u5957\u63a5\u5b57\u4e0a\u6709\u6d41\u91cf\u8fdb\u5165\u65f6\uff0c \u88ab\u542f\u52a8\u7684\u53ef\u80fd\u662f\u53e6\u4e00\u4e2a\u4e0d\u540c\u4e8e\u8be5\u670d\u52a1\u7684\u5176\u4ed6\u670d\u52a1\u3002 \u6362\u53e5\u8bdd\u8bf4\u5c31\u662f\uff1a \u5957\u63a5\u5b57\u5355\u5143\u4e2d\u7684\u00a0<code class=\"varname\">Sockets=<\/code>\u00a0\u6240\u6307\u5411\u7684\u670d\u52a1\u5355\u5143\u4e2d\u7684\u00a0<code class=\"varname\">Sockets=<\/code>\u00a0\u672a\u5fc5\u8981\u53cd\u5411\u6307\u56de\u53bb\u3002<\/p>\n<p>\u5982\u679c\u591a\u6b21\u4f7f\u7528\u6b64\u9009\u9879\uff0c \u90a3\u4e48\u6700\u7ec8\u7684\u7ed3\u679c\u5c06\u662f\u591a\u4e2asocket\u5355\u5143\u7684\u5408\u96c6\u3002 \u5982\u679c\u5c06\u6b64\u9009\u9879\u8bbe\u4e3a\u7a7a\uff0c \u90a3\u4e48\u5148\u524d\u8bbe\u7f6e\u7684\u6240\u6709socket\u5355\u5143 \u90fd\u5c06\u88ab\u6e05\u7a7a\u3002<\/dd>\n<dt id=\"FileDescriptorStoreMax=\"><span class=\"term\"><code class=\"varname\">FileDescriptorStoreMax=<\/code><\/span><\/dt>\n<dd>\u5141\u8bb8\u5728 systemd \u4e2d\u6700\u591a\u4e3a\u8be5\u670d\u52a1\u5b58\u50a8\u591a\u5c11\u4e2a\u4f7f\u7528 \"<code class=\"literal\">FDSTORE=1<\/code>\" \u6d88\u606f(<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_pid_notify_with_fds.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_pid_notify_with_fds<\/span>(3)<\/span><\/a>) \u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u3002\u9ed8\u8ba4\u503c\u4e3a\"0\"(\u4e0d\u5b58\u50a8)\u3002 \u901a\u8fc7\u5c06\u670d\u52a1\u91cd\u542f\u8fc7\u7a0b\u4e2d\u4e0d\u5e94\u8be5\u5173\u95ed\u7684\u5957\u63a5\u5b57\u4e0e\u6587\u4ef6\u63cf\u8ff0\u7b26\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u4fdd\u5b58\u8d77\u6765\uff0c \u5c31\u53ef\u4ee5\u5b9e\u73b0\u8ba9\u670d\u52a1\u5728\u91cd\u542f(\u6b63\u5e38\u91cd\u542f\u6216\u5d29\u6e83\u91cd\u542f)\u4e4b\u540e\u4e0d\u4e22\u5931\u5176\u72b6\u6001\u3002 \u8fdb\u7a0b\u7684\u72b6\u6001\u53ef\u4ee5\u88ab\u5e8f\u5217\u5316\u4e3a\u4e00\u4e2a\u6587\u4ef6\u4e4b\u540e\u4fdd\u5b58\u5728\u00a0<code class=\"filename\">\/run<\/code>\u00a0\u4e2d\uff0c \u6216\u8005\u4fdd\u5b58\u5728\u4e00\u4e2a\u00a0<a href=\"http:\/\/man7.org\/linux\/man-pages\/man2\/memfd_create.2.html\"><span class=\"citerefentry\"><span class=\"refentrytitle\">memfd_create<\/span>(2)<\/span><\/a>\u00a0\u5185\u5b58\u6587\u4ef6\u63cf\u8ff0\u7b26\u4e2d(\u8fd9\u662f\u66f4\u597d\u7684\u9009\u62e9)\u3002 \u6240\u6709\u88ab systemd \u6682\u5b58\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u90fd\u5c06\u5728\u8be5\u670d\u52a1\u91cd\u542f\u4e4b\u540e\u4ea4\u8fd8\u7ed9\u8be5\u670d\u52a1\u7684\u4e3b\u8fdb\u7a0b\u3002 \u6240\u6709\u88ab systemd \u6682\u5b58\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u90fd\u5c06\u5728\u9047\u5230\u5982\u4e0b\u4e24\u79cd\u60c5\u51b5\u65f6\u88ab\u81ea\u52a8\u5173\u95ed\uff1a (1)\u6536\u5230\u00a0<code class=\"constant\">POLLHUP<\/code>\u00a0\u6216\u00a0<code class=\"constant\">POLLERR<\/code>\u00a0\u4fe1\u53f7\uff1b (2)\u8be5\u670d\u52a1\u88ab\u5f7b\u5e95\u505c\u6b62\uff0c\u5e76\u4e14\u6ca1\u6709\u4efb\u4f55\u5269\u4f59\u7684\u4efb\u52a1\u9700\u8981\u5904\u7406\u3002 \u5982\u679c\u4f7f\u7528\u4e86\u6b64\u9009\u9879\uff0c\u90a3\u4e48\u524d\u6587\u7684\u00a0<code class=\"varname\">NotifyAccess=<\/code>\u00a0\u5e94\u8be5\u88ab\u8bbe\u4e3a\u5141\u8bb8\u8bbf\u95ee systemd \u63d0\u4f9b\u7684\u901a\u77e5\u5957\u63a5\u5b57\u3002\u82e5\u672a\u8bbe\u7f6e\u00a0<code class=\"varname\">NotifyAccess=<\/code>\u00a0\uff0c\u90a3\u4e48\u5c06\u88ab\u9690\u542b\u7684\u8bbe\u4e3a\u00a0<code class=\"option\">main<\/code><\/dd>\n<dt id=\"USBFunctionDescriptors=\"><span class=\"term\"><code class=\"varname\">USBFunctionDescriptors=<\/code><\/span><\/dt>\n<dd>\u8bbe\u4e3a\u4e00\u4e2a\u5305\u542b\u00a0<a class=\"ulink\" href=\"https:\/\/www.kernel.org\/doc\/Documentation\/usb\/functionfs.txt\" target=\"_top\" rel=\"noopener noreferrer\">USB FunctionFS<\/a>\u00a0\u63cf\u8ff0\u7b26\u7684\u6587\u4ef6\u8def\u5f84\uff0c \u4ee5\u5b9e\u73b0 USB gadget \u652f\u6301\u3002 \u4ec5\u4e0e\u914d\u7f6e\u4e86\u00a0<code class=\"varname\">ListenUSBFunction=<\/code>\u00a0\u7684 socket \u5355\u5143\u4e00\u8d77\u4f7f\u7528\u3002\u8be5\u6587\u4ef6\u7684\u5185\u5bb9\u5c06\u88ab\u5199\u5165\u00a0<code class=\"filename\">ep0<\/code>\u00a0\u6587\u4ef6\u3002<\/dd>\n<dt id=\"USBFunctionStrings=\"><span class=\"term\"><code class=\"varname\">USBFunctionStrings=<\/code><\/span><\/dt>\n<dd>\u8bbe\u4e3a\u4e00\u4e2a\u5305\u542b\u00a0<a class=\"ulink\" href=\"https:\/\/www.kernel.org\/doc\/Documentation\/usb\/functionfs.txt\" target=\"_top\" rel=\"noopener noreferrer\">USB FunctionFS<\/a>\u00a0\u5b57\u7b26\u4e32\u7684\u6587\u4ef6\u8def\u5f84\u3002 \u5176\u884c\u4e3a\u4e0e\u4e0a\u9762\u7684\u00a0<code class=\"varname\">USBFunctionDescriptors=<\/code>\u00a0\u7c7b\u4f3c\u3002<\/dd>\n<\/dl>\n<\/div>\n<p>\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.exec.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.exec<\/span>(5)<\/span><\/a>\u00a0\u4e0e\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\uff0c\u4ee5\u4e86\u89e3\u66f4\u591a\u5176\u4ed6\u9009\u9879\u3002<\/p>\n<\/div>\n<div class=\"refsect1\">\n<p><a name=\"id-1.9\"><\/a><\/p>\n<h2 id=\"\u547d\u4ee4\u884c\">\u547d\u4ee4\u884c<\/h2>\n<p>\u672c\u5c0f\u8282 \u8bb2\u89e3\u00a0<code class=\"varname\">ExecStart=<\/code>,\u00a0<code class=\"varname\">ExecStartPre=<\/code>,\u00a0<code class=\"varname\">ExecStartPost=<\/code>,\u00a0<code class=\"varname\">ExecReload=<\/code>,\u00a0<code class=\"varname\">ExecStop=<\/code>,\u00a0<code class=\"varname\">ExecStopPost=<\/code>\u00a0\u9009\u9879\u7684\u547d\u4ee4\u884c\u89e3\u6790\u89c4\u5219\u3002<\/p>\n<p>\u5982\u679c\u8981\u4e00\u6b21\u8bbe\u7f6e\u591a\u4e2a\u547d\u4ee4\uff0c\u90a3\u4e48\u53ef\u4ee5\u4f7f\u7528\u5206\u53f7(;)\u5c06\u591a\u4e2a\u547d\u4ee4\u884c\u8fde\u63a5\u8d77\u6765\u3002 \u6ce8\u610f\uff0c\u4ec5\u5728\u8bbe\u7f6e\u4e86\u00a0<code class=\"varname\">Type=oneshot<\/code>\u00a0\u7684\u524d\u63d0\u4e0b\uff0c\u624d\u53ef\u4ee5\u4e00\u6b21\u8bbe\u7f6e\u591a\u4e2a\u547d\u4ee4\u3002 \u5206\u53f7\u81ea\u8eab \u5fc5\u987b\u7528 \"<code class=\"literal\">;<\/code>\" \u8868\u793a\u3002<\/p>\n<p>\u6bcf\u4e2a\u547d\u4ee4\u884c\u7684\u5185\u90e8 \u90fd\u4ee5\u7a7a\u683c\u5206\u9694\uff0c \u7b2c\u4e00\u9879\u662f\u8981\u8fd0\u884c\u7684\u547d\u4ee4\uff0c \u968f\u540e\u7684\u5404\u9879\u5219\u662f\u547d\u4ee4\u7684\u53c2\u6570\u3002 \u6bcf\u4e00\u9879\u7684\u8fb9\u754c\u90fd\u53ef\u4ee5\u7528\u5355\u5f15\u53f7\u6216\u53cc\u5f15\u53f7\u754c\u5b9a\uff0c \u4f46\u5f15\u53f7\u81ea\u8eab\u6700\u7ec8\u5c06\u4f1a\u88ab\u5265\u79bb\u3002 \u8fd8\u53ef\u4ee5\u4f7f\u7528C\u8bed\u8a00\u98ce\u683c\u7684\u8f6c\u4e49\u5e8f\u5217\uff0c \u4f46\u4ec5\u53ef\u4f7f\u7528\u4e0b\u6587\u8868\u683c\u4e2d\u7684\u8f6c\u4e49\u5e8f\u5217\u3002 \u6700\u540e\uff0c\u884c\u5c3e\u7684\u53cd\u659c\u6760(\"<code class=\"literal\"><\/code>\") \u5c06\u88ab\u89c6\u4f5c\u7eed\u884c\u7b26(\u501f\u9274\u4e86bash\u7eed\u884c\u8bed\u6cd5)\u3002<\/p>\n<p>\u547d\u4ee4\u884c\u7684\u8bed\u6cd5\u523b\u610f\u501f\u9274\u4e86shell\u4e2d\u7684\u8f6c\u4e49\u5b57\u7b26\u4e0e\u53d8\u91cf\u5c55\u5f00\u8bed\u6cd5\uff0c \u4f46\u4e24\u8005\u5e76\u4e0d\u5b8c\u5168\u76f8\u540c\u3002 \u7279\u522b\u7684\uff0c \u91cd\u5b9a\u5411(\"<code class=\"literal\">&lt;<\/code>\", \"<code class=\"literal\">&lt;&lt;<\/code>\", \"<code class=\"literal\">&gt;<\/code>\", \"<code class=\"literal\">&gt;&gt;<\/code>\")\u3001 \u7ba1\u9053(\"<code class=\"literal\">|<\/code>\")\u3001 \u540e\u53f0\u8fd0\u884c(\"<code class=\"literal\">&amp;<\/code>\")\uff0c \u4ee5\u53ca<span class=\"emphasis\"><em>\u5176\u4ed6\u4e0b\u6587\u672a\u660e\u786e\u63d0\u53ca\u7684\u7b26\u53f7<\/em><\/span>\u90fd\u4e0d\u88ab\u652f\u6301\u3002<\/p>\n<p>\u8981\u8fd0\u884c\u7684\u547d\u4ee4(\u7b2c\u4e00\u9879)\u53ef\u4ee5\u5305\u542b\u7a7a\u683c\uff0c\u4f46\u662f\u4e0d\u80fd\u5305\u542b\u63a7\u5236\u5b57\u7b26\u3002<\/p>\n<p>\u53ef\u4ee5\u5728\u5404\u9879\u547d\u4ee4\u53c2\u6570\u4e2d\u4f7f\u7528 \"<code class=\"literal\">%<\/code>\" \u7cfb\u5217\u66ff\u6362\u6807\u8bb0(\u8be6\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.unit.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.unit<\/span>(5)<\/span><\/a>\u624b\u518c)\u3002<\/p>\n<p>\u652f\u6301 \"<code class=\"literal\">${FOO}<\/code>\" \u4e0e \"<code class=\"literal\">$FOO<\/code>\" \u4e24\u79cd\u4e0d\u540c\u7684\u73af\u5883\u53d8\u91cf\u66ff\u6362\u65b9\u5f0f\u3002 \u5177\u4f53\u8bf4\u6765\u5c31\u662f\uff1a \"<code class=\"literal\">${FOO}<\/code>\" \u7684\u5185\u5bb9\u5c06\u539f\u5c01\u4e0d\u52a8\u7684\u8f6c\u5316\u4e3a\u4e00\u4e2a\u5355\u72ec\u7684\u547d\u4ee4\u884c\u53c2\u6570\uff0c \u65e0\u8bba\u5176\u4e2d\u662f\u5426\u5305\u542b\u7a7a\u683c\u4e0e\u5f15\u53f7\uff0c\u4e5f\u65e0\u8bba\u5b83\u662f\u5426\u4e3a\u7a7a\u3002 \"<code class=\"literal\">$FOO<\/code>\" \u7684\u5185\u5bb9\u5c06\u88ab\u539f\u5c01\u4e0d\u52a8\u7684\u63d2\u5165\u547d\u4ee4\u884c\u4e2d\uff0c \u4f46\u5bf9\u63d2\u5165\u5185\u5bb9\u7684\u89e3\u91ca\u5374\u9075\u5b88\u4e00\u822c\u7684\u547d\u4ee4\u884c\u89e3\u6790\u89c4\u5219\u3002 \u540e\u6587\u7684\u4e24\u4e2a\u4f8b\u5b50\uff0c \u5c06\u80fd\u6e05\u6670\u7684\u4f53\u73b0\u4e24\u8005\u7684\u5dee\u522b\u3002<\/p>\n<p>\u5982\u679c\u8981\u8fd0\u884c\u7684\u547d\u4ee4(\u7b2c\u4e00\u9879)\u4e0d\u662f\u4e00\u4e2a\u7edd\u5bf9\u8def\u5f84\uff0c \u90a3\u4e48\u5c06\u4f1a\u5728\u7f16\u8bd1\u65f6\u8bbe\u5b9a\u7684\u53ef\u6267\u884c\u6587\u4ef6\u641c\u7d22\u76ee\u5f55\u4e2d\u67e5\u627e\u3002 \u56e0\u4e3a\u9ed8\u8ba4\u5305\u62ec\u00a0<code class=\"filename\">\/usr\/local\/bin\/<\/code>,\u00a0<code class=\"filename\">\/usr\/bin\/<\/code>,\u00a0<code class=\"filename\">\/bin\/<\/code>,\u00a0<code class=\"filename\">\/usr\/local\/sbin\/<\/code>,\u00a0<code class=\"filename\">\/usr\/sbin\/<\/code>,\u00a0<code class=\"filename\">\/sbin\/<\/code>\u00a0\u76ee\u5f55\uff0c \u6240\u4ee5\u53ef\u4ee5\u5b89\u5168\u7684\u76f4\u63a5\u4f7f\u7528\"\u6807\u51c6\u76ee\u5f55\"\u4e2d\u7684\u53ef\u6267\u884c\u7a0b\u5e8f\u540d\u79f0(\u6ca1\u5fc5\u8981\u518d\u4f7f\u7528\u7edd\u5bf9\u8def\u5f84)\uff0c \u800c\u5bf9\u4e8e\u975e\u6807\u51c6\u76ee\u5f55\u4e2d\u7684\u53ef\u6267\u884c\u7a0b\u5e8f\uff0c\u5219\u5fc5\u987b\u4f7f\u7528\u7edd\u5bf9\u8def\u5f84\u3002\u5efa\u8bae\u59cb\u7ec8\u4f7f\u7528\u7edd\u5bf9\u8def\u5f84\u4ee5\u907f\u514d\u6b67\u4e49\u3002 [\u63d0\u793a]\u53ef\u4ee5\u4f7f\u7528\u00a0<span class=\"command\"><strong>systemd-path search-binaries-default<\/strong><\/span>\u00a0\u663e\u793a\u7f16\u8bd1\u65f6\u8bbe\u5b9a\u7684\u53ef\u6267\u884c\u6587\u4ef6\u641c\u7d22\u76ee\u5f55\u3002<\/p>\n<p>\u4f8b(1)\uff1a<\/p>\n<pre class=\"programlisting\">Environment=\"ONE=one\" 'TWO=two two'\r\nExecStart=echo $ONE $TWO ${TWO}<\/pre>\n<p>\u8fd9\u5c06\u7ed9\u00a0<span class=\"command\"><strong>\/bin\/echo<\/strong><\/span>\u00a0\u547d\u4ee4\u4f9d\u6b21\u4f20\u9012\u5982\u4e0b\u56db\u4e2a\u53c2\u6570: \"<code class=\"literal\">one<\/code>\", \"<code class=\"literal\">two<\/code>\", \"<code class=\"literal\">two<\/code>\", \"<code class=\"literal\">two two<\/code>\"<\/p>\n<p>\u4f8b(2)\uff1a<\/p>\n<pre class=\"programlisting\">Environment=ONE='one' \"TWO='two\u00a0two'\u00a0too\" THREE=\r\nExecStart=\/bin\/echo ${ONE} ${TWO} ${THREE}\r\nExecStart=\/bin\/echo $ONE $TWO $THREE<\/pre>\n<p>\u8fd9\u5c06\u5bfc\u81f4\u00a0<code class=\"filename\">\/bin\/echo<\/code>\u00a0\u88ab\u6267\u884c\u4e24\u6b21\u3002 \u7b2c\u4e00\u6b21\u88ab\u4f9d\u6b21\u4f20\u9012\u5982\u4e0b\u4e09\u4e2a\u53c2\u6570\uff1a \"<code class=\"literal\">'one'<\/code>\", \"<code class=\"literal\">'two\u00a0two'\u00a0too<\/code>\", \"<code class=\"literal\"><\/code>\" \uff1b \u7b2c\u4e8c\u6b21\u88ab\u4f9d\u6b21\u4f20\u9012\u5982\u4e0b\u4e09\u4e2a\u53c2\u6570\uff1a \"<code class=\"literal\">one<\/code>\", \"<code class=\"literal\">two\u00a0two<\/code>\", \"<code class=\"literal\">too<\/code>\" \u3002<\/p>\n<p>\u6b64\u5916\uff0c\u5982\u679c\u60f3\u8981\u4f20\u9012\u7f8e\u5143\u7b26\u53f7($)\u81ea\u8eab\uff0c \u5219\u5fc5\u987b\u4f7f\u7528 \"<code class=\"literal\">$$<\/code>\" \u3002 \u800c\u90a3\u4e9b\u65e0\u6cd5\u5728\u66ff\u6362\u65f6\u786e\u5b9a\u5185\u5bb9\u7684\u53d8\u91cf\u5c06\u88ab\u5f53\u505a\u7a7a\u5b57\u7b26\u4e32\u3002 \u6ce8\u610f\uff0c\u4e0d\u53ef\u4ee5\u5728\u7b2c\u4e00\u9879(\u4e5f\u5c31\u662f\u547d\u4ee4\u7684\u7edd\u5bf9\u8def\u5f84)\u4e2d\u4f7f\u7528\u53d8\u91cf\u66ff\u6362\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u8fd9\u91cc\u4f7f\u7528\u7684\u53d8\u91cf\u5fc5\u987b\u5df2\u7ecf\u5728\u00a0<code class=\"varname\">Environment=<\/code>\u00a0\u6216\u00a0<code class=\"varname\">EnvironmentFile=<\/code>\u00a0\u4e2d\u5b9a\u4e49\u3002 \u6b64\u5916\uff0c\u5728\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.exec.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.exec<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u7684\"\u73af\u5883\u53d8\u91cf\"\u5c0f\u8282\u4e2d\u5217\u51fa\u7684\"\u9759\u6001\u53d8\u91cf\"\u4e5f\u53ef\u4ee5\u4f7f\u7528\u3002 \u4f8b\u5982\u00a0<code class=\"varname\">$USER<\/code>\u00a0\u5c31\u662f\u4e00\u4e2a\"\u9759\u6001\u53d8\u91cf\"\uff0c \u800c\u00a0<code class=\"varname\">$TERM<\/code>\u00a0\u5219\u4e0d\u662f\u3002<\/p>\n<p>\u6ce8\u610f\uff0c \u8fd9\u91cc\u7684\u547d\u4ee4\u884c\u5e76\u4e0d\u76f4\u63a5\u652f\u6301shell\u547d\u4ee4\uff0c \u4f46\u662f\u53ef\u4ee5\u901a\u8fc7\u6a21\u4eff\u4e0b\u9762\u8fd9\u4e2a\u53d8\u901a\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\uff1a<\/p>\n<pre class=\"programlisting\">ExecStart=sh -c 'dmesg | tac'<\/pre>\n<p>\u4f8b\u4e00<\/p>\n<pre class=\"programlisting\">ExecStart=echo one ; echo \"two two\"<\/pre>\n<p>\u8fd9\u5c06\u5bfc\u81f4\u00a0<span class=\"command\"><strong>echo<\/strong><\/span>\u00a0\u88ab\u6267\u884c\u4e24\u6b21\u3002 \u7b2c\u4e00\u6b21\u88ab\u4f20\u9012\u4e86\u5355\u72ec\u4e00\u4e2a \"<code class=\"literal\">one<\/code>\" \u53c2\u6570\uff1b \u7b2c\u4e8c\u6b21\u88ab\u4f20\u9012\u4e86\u5355\u72ec\u4e00\u4e2a \"<code class=\"literal\">two two<\/code>\" \u53c2\u6570\u3002 \u56e0\u4e3a\u4e00\u6b21\u8bbe\u7f6e\u4e86\u591a\u4e2a\u547d\u4ee4\uff0c\u6240\u4ee5\u4ec5\u80fd\u7528\u4e8e\u00a0<code class=\"varname\">Type=oneshot<\/code>\u00a0\u7c7b\u578b\u3002<\/p>\n<p>\u4f8b\u4e8c<\/p>\n<pre class=\"programlisting\">ExecStart=echo \/ &gt;\/dev\/null &amp; ; \r\nls<\/pre>\n<p>\u8fd9\u8868\u793a\u5411\u00a0<span class=\"command\"><strong>echo<\/strong><\/span>\u00a0\u547d\u4ee4\u4f20\u9012\u4e94\u4e2a\u53c2\u6570\uff1a \"<code class=\"literal\">\/<\/code>\", \"<code class=\"literal\">&gt;\/dev\/null<\/code>\", \"<code class=\"literal\">&amp;<\/code>\", \"<code class=\"literal\">;<\/code>\", \"<code class=\"literal\">ls<\/code>\"<\/p>\n<div class=\"table\">\n<p><a name=\"id-1.9.26\"><\/a><\/p>\n<p class=\"title\"><b>\u8868\u00a03.\u00a0\u53ef\u4ee5\u5728\u547d\u4ee4\u884c\u4e0e\u73af\u5883\u53d8\u91cf\u4e2d\u4f7f\u7528\u7684C\u8bed\u8a00\u98ce\u683c\u7684\u8f6c\u4e49\u5e8f\u5217<\/b><\/p>\n<div class=\"table-contents\">\n<table class=\"table\" border=\"1\" summary=\"\u53ef\u4ee5\u5728\u547d\u4ee4\u884c\u4e0e\u73af\u5883\u53d8\u91cf\u4e2d\u4f7f\u7528\u7684C\u8bed\u8a00\u98ce\u683c\u7684\u8f6c\u4e49\u5e8f\u5217\">\n<colgroup>\n<col class=\"escape\" \/>\n<col class=\"meaning\" \/><\/colgroup>\n<thead>\n<tr>\n<th>\u8f6c\u4e49\u5e8f\u5217<\/th>\n<th>\u5b9e\u9645\u542b\u4e49<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\"<code class=\"literal\">a<\/code>\"<\/td>\n<td>\u54cd\u94c3<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">b<\/code>\"<\/td>\n<td>\u9000\u683c<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">f<\/code>\"<\/td>\n<td>\u6362\u9875<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">n<\/code>\"<\/td>\n<td>\u6362\u884c<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">r<\/code>\"<\/td>\n<td>\u56de\u8f66<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">t<\/code>\"<\/td>\n<td>\u5236\u8868\u7b26<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">v<\/code>\"<\/td>\n<td>\u7eb5\u5411\u5236\u8868\u7b26<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\"><\/code>\"<\/td>\n<td>\u53cd\u659c\u7ebf<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">\"<\/code>\"<\/td>\n<td>\u53cc\u5f15\u53f7<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">'<\/code>\"<\/td>\n<td>\u5355\u5f15\u53f7<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">s<\/code>\"<\/td>\n<td>\u7a7a\u767d<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\">x<em class=\"replaceable\"><code>xx<\/code><\/em><\/code>\"<\/td>\n<td>\u5341\u516d\u8fdb\u5236\u6570\u00a0<em class=\"replaceable\"><code>xx<\/code><\/em>\u00a0\u6240\u5bf9\u5e94\u7684\u5b57\u7b26<\/td>\n<\/tr>\n<tr>\n<td>\"<code class=\"literal\"><em class=\"replaceable\"><code>nnn<\/code><\/em><\/code>\"<\/td>\n<td>\u516b\u8fdb\u5236\u6570\u00a0<em class=\"replaceable\"><code>nnn<\/code><\/em>\u00a0\u6240\u5bf9\u5e94\u7684\u5b57\u7b26<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"refsect1\">\n<p><a name=\"id-1.10\"><\/a><\/p>\n<h2 id=\"\u4f8b\u5b50\">\u4f8b\u5b50<\/h2>\n<div class=\"example\">\n<p><a name=\"id-1.10.2\"><\/a><\/p>\n<p class=\"title\"><b>\u4f8b\u00a01.\u00a0\u7b80\u5355\u670d\u52a1<\/b><\/p>\n<div class=\"example-contents\">\n<p>\u4e0b\u9762\u7684\u5355\u5143\u6587\u4ef6\u521b\u5efa\u4e86\u4e00\u4e2a\u8fd0\u884c\u00a0<code class=\"filename\">\/usr\/sbin\/foo-daemon<\/code>\u00a0\u5b88\u62a4\u8fdb\u7a0b\u7684\u670d\u52a1\u3002 \u672a\u8bbe\u7f6e\u00a0<code class=\"varname\">Type=<\/code>\u00a0\u7b49\u4ef7\u4e8e\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">simple<\/code>\u00a0\u9ed8\u8ba4\u8bbe\u7f6e\u3002 systemd \u6267\u884c\u5b88\u62a4\u8fdb\u7a0b\u4e4b\u540e\uff0c \u5373\u8ba4\u4e3a\u8be5\u5355\u5143\u5df2\u7ecf\u542f\u52a8\u6210\u529f\u3002<\/p>\n<pre class=\"programlisting\">[Unit]\r\nDescription=\u7b80\u5355\u7684Foo\u670d\u52a1\r\n\r\n[Service]\r\nExecStart=\/usr\/sbin\/foo-daemon\r\n\r\n[Install]\r\nWantedBy=multi-user.target<\/pre>\n<p>\u6ce8\u610f\uff0c\u672c\u4f8b\u4e2d\u7684\u00a0<code class=\"filename\">\/usr\/sbin\/foo-daemon<\/code>\u00a0\u5fc5\u987b\u5728\u542f\u52a8\u540e\u6301\u7eed\u8fd0\u884c\u5230\u670d\u52a1\u88ab\u505c\u6b62\u3002 \u5982\u679c\u8be5\u8fdb\u7a0b\u53ea\u662f\u4e3a\u4e86\u6d3e\u751f\u5b88\u62a4\u8fdb\u7a0b\uff0c\u90a3\u4e48\u5e94\u8be5\u4f7f\u7528\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">forking<\/code><\/p>\n<p>\u56e0\u4e3a\u6ca1\u6709\u8bbe\u7f6e\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u9009\u9879\uff0c \u6240\u4ee5\u5728\u505c\u6b62\u670d\u52a1\u65f6\uff0csystemd \u5c06\u4f1a\u76f4\u63a5\u5411\u8be5\u670d\u52a1\u542f\u52a8\u7684\u6240\u6709\u8fdb\u7a0b\u53d1\u9001 SIGTERM \u4fe1\u53f7\u3002 \u82e5\u8d85\u8fc7\u6307\u5b9a\u65f6\u95f4\u4f9d\u7136\u5b58\u5728\u672a\u88ab\u6740\u6b7b\u7684\u8fdb\u7a0b\uff0c\u90a3\u4e48\u5c06\u4f1a\u7ee7\u7eed\u53d1\u9001 SIGKILL \u4fe1\u53f7\u3002 \u8be6\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u3002<\/p>\n<p>\u9ed8\u8ba4\u7684\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">simple<\/code>\u00a0\u5e76\u4e0d\u5305\u542b\u4efb\u4f55\u901a\u77e5\u673a\u5236(\u4f8b\u5982\u901a\u77e5\"\u670d\u52a1\u542f\u52a8\u6210\u529f\")\u3002 \u8981\u60f3\u4f7f\u7528\u901a\u77e5\u673a\u5236\uff0c\u5e94\u8be5\u5c06\u00a0<code class=\"varname\">Type=<\/code>\u00a0\u8bbe\u4e3a\u5176\u4ed6\u975e\u9ed8\u8ba4\u503c\uff1a\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">notify<\/code>\u00a0\u53ef\u7528\u4e8e\u80fd\u591f\u7406\u89e3 systemd \u901a\u77e5\u534f\u8bae\u7684\u670d\u52a1\uff1b\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">forking<\/code>\u00a0\u53ef\u7528\u4e8e\u80fd\u5c06\u81ea\u8eab\u5207\u6362\u5230\u540e\u53f0\u7684\u670d\u52a1\uff1b\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">dbus<\/code>\u00a0\u53ef\u7528\u4e8e\u80fd\u591f\u5728\u5b8c\u6210\u521d\u59cb\u5316\u4e4b\u540e \u83b7\u5f97\u4e00\u4e2a D-Bus \u540d\u79f0\u7684\u5355\u5143\u3002<\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"example\">\n<p><a name=\"id-1.10.3\"><\/a><\/p>\n<p class=\"title\"><b>\u4f8b\u00a02.\u00a0\u4e00\u6b21\u6027\u670d\u52a1<\/b><\/p>\n<div class=\"example-contents\">\n<p><code class=\"varname\">Type=<\/code><code class=\"option\">oneshot<\/code>\u00a0\u7528\u4e8e\u90a3\u4e9b\u53ea\u9700\u8981\u6267\u884c\u4e00\u6b21\u6027\u52a8\u4f5c\u800c\u4e0d\u9700\u8981\u6301\u4e45\u8fd0\u884c\u7684\u5355\u5143\uff0c \u4f8b\u5982\u6587\u4ef6\u7cfb\u7edf\u68c0\u67e5\u6216\u8005\u6e05\u7406\u4e34\u65f6\u6587\u4ef6\u3002 \u6b64\u7c7b\u5355\u5143\uff0c \u5c06\u4f1a\u5728\u542f\u52a8\u540e\u4e00\u76f4\u7b49\u5f85\u6307\u5b9a\u7684\u52a8\u4f5c\u5b8c\u6210\uff0c \u7136\u540e\u518d\u56de\u5230\u505c\u6b62\u72b6\u6001\u3002 \u4e0b\u9762\u662f\u4e00\u4e2a\u6267\u884c\u6e05\u7406\u52a8\u4f5c\u7684\u5355\u5143\uff1a<\/p>\n<pre class=\"programlisting\">[Unit]\r\nDescription=\u6e05\u7406\u8001\u65e7\u7684 Foo \u6570\u636e\r\n\r\n[Service]\r\nType=oneshot\r\nExecStart=\/usr\/sbin\/foo-cleanup\r\n\r\n[Install]\r\nWantedBy=multi-user.target<\/pre>\n<p>\u6ce8\u610f\uff0c\u5728\u00a0<code class=\"filename\">\/usr\/sbin\/foo-cleanup<\/code>\u00a0\u6267\u884c\u7ed3\u675f\u524d\uff0c \u8be5\u670d\u52a1\u4e00\u76f4\u5904\u4e8e\"\u542f\u52a8\u4e2d\"(activating)\u72b6\u6001\uff0c\u800c\u4e00\u65e6\u6267\u884c\u7ed3\u675f\uff0c\u8be5\u670d\u52a1\u53c8\u7acb\u5373\u53d8\u4e3a\"\u505c\u6b62\"(inactive)\u72b6\u6001\u3002 \u4e5f\u5c31\u662f\u8bf4\uff0c\u5bf9\u4e8e\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">oneshot<\/code>\u00a0\u7c7b\u578b\u7684\u670d\u52a1\uff0c\u4e0d\u5b58\u5728\"\u6d3b\u52a8\"(active)\u72b6\u6001\u3002 \u8fd9\u610f\u5473\u7740\uff0c\u5982\u679c\u518d\u4e00\u6b21\u542f\u52a8\u8be5\u670d\u52a1\uff0c\u5c06\u4f1a\u518d\u4e00\u6b21\u6267\u884c\u8be5\u670d\u52a1\u5b9a\u4e49\u7684\u52a8\u4f5c\u3002 \u6ce8\u610f\uff0c\u5728\u5148\u540e\u987a\u5e8f\u4e0a\u665a\u4e8e\u8be5\u670d\u52a1\u7684\u5355\u5143\uff0c \u5c06\u4f1a\u4e00\u76f4\u7b49\u5230\u8be5\u670d\u52a1\u53d8\u6210\"\u505c\u6b62\"(inactive)\u72b6\u6001\u540e\uff0c \u624d\u4f1a\u5f00\u59cb\u542f\u52a8\u3002<\/p>\n<p><code class=\"varname\">Type=<\/code><code class=\"option\">oneshot<\/code>\u00a0\u662f\u552f\u4e00\u53ef\u4ee5\u8bbe\u7f6e\u591a\u4e2a\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u6307\u4ee4\u7684\u670d\u52a1\u7c7b\u578b\u3002 \u591a\u4e2a\u00a0<code class=\"varname\">ExecStart=<\/code>\u00a0\u6307\u4ee4\u5c06\u6309\u7167\u5b83\u4eec\u51fa\u73b0\u7684\u987a\u5e8f\u4f9d\u6b21\u6267\u884c\uff0c \u4e00\u65e6\u9047\u5230\u9519\u8bef\uff0c\u5c31\u4f1a\u7acb\u5373\u505c\u6b62\uff0c\u4e0d\u518d\u7ee7\u7eed\u6267\u884c\uff0c \u540c\u65f6\u8be5\u670d\u52a1\u4e5f\u5c06\u8fdb\u5165\"\u5931\u8d25\"(failed)\u72b6\u6001\u3002<\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"example\">\n<p><a name=\"id-1.10.4\"><\/a><\/p>\n<p class=\"title\"><b>\u4f8b\u00a03.\u00a0\u53ef\u505c\u6b62\u7684\u4e00\u6b21\u6027\u670d\u52a1<\/b><\/p>\n<div class=\"example-contents\">\n<p>\u6709\u65f6\u5019\uff0c \u5355\u5143\u9700\u8981\u6267\u884c\u4e00\u4e2a\u7a0b\u5e8f\u4ee5\u5b8c\u6210\u67d0\u4e2a\u8bbe\u7f6e(\u542f\u52a8)\uff0c \u7136\u540e\u53c8\u9700\u8981\u518d\u6267\u884c\u53e6\u4e00\u4e2a\u7a0b\u5e8f\u4ee5\u64a4\u6d88\u5148\u524d\u7684\u8bbe\u7f6e(\u505c\u6b62)\uff0c \u800c\u5728\u8bbe\u7f6e\u6301\u7eed\u6709\u6548\u7684\u65f6\u6bb5\u4e2d\uff0c\u8be5\u5355\u5143\u5e94\u8be5\u89c6\u4e3a\u5904\u4e8e\"\u6d3b\u52a8\"(active)\u72b6\u6001\uff0c \u4f46\u5b9e\u9645\u4e0a\u5e76\u65e0\u4efb\u4f55\u7a0b\u5e8f\u5728\u6301\u7eed\u8fd0\u884c\u3002 \u7f51\u7edc\u914d\u7f6e\u670d\u52a1\u5c31\u662f\u4e00\u4e2a\u5178\u578b\u7684\u4f8b\u5b50\u3002 \u6b64\u5916\uff0c\u53ea\u80fd\u542f\u52a8\u4e00\u6b21(\u4e0d\u53ef\u591a\u6b21\u542f\u52a8)\u7684\u4e00\u6b21\u6027\u670d\u52a1\uff0c \u4e5f\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002<\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u00a0<code class=\"varname\">RemainAfterExit=<\/code><code class=\"option\">yes<\/code>\u00a0\u6765\u6ee1\u8db3\u8fd9\u79cd\u9700\u6c42\u3002 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0csystemd \u5c06\u4f1a\u5728\u542f\u52a8\u6210\u529f\u540e\u5c06\u8be5\u5355\u5143\u89c6\u4e3a\u5904\u4e8e\"\u6d3b\u52a8\"(active)\u72b6\u6001(\u800c\u4e0d\u662f\"\u505c\u6b62\"(inactive)\u72b6\u6001)\u3002\u00a0<code class=\"varname\">RemainAfterExit=<\/code><code class=\"option\">yes<\/code>\u00a0\u867d\u7136\u53ef\u4ee5\u7528\u4e8e\u6240\u6709\u00a0<code class=\"varname\">Type=<\/code>\u00a0\u7c7b\u578b\uff0c \u4f46\u662f\u5728\u5b9e\u8df5\u4e2d\u4e3b\u8981\u7528\u4e8e\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">oneshot<\/code>\u00a0\u548c\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">simple<\/code>\u00a0\u7c7b\u578b\u3002 \u5bf9\u4e8e\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">oneshot<\/code>\u00a0\u7c7b\u578b\uff0c systemd \u4e00\u76f4\u7b49\u5230\u670d\u52a1\u542f\u52a8\u6210\u529f\u4e4b\u540e\uff0c\u624d\u4f1a\u5c06\u8be5\u670d\u52a1\u7f6e\u4e8e\"\u6d3b\u52a8\"(active)\u72b6\u6001\u3002 \u6240\u4ee5\uff0c\u4f9d\u8d56\u4e8e\u8be5\u670d\u52a1\u7684\u5176\u4ed6\u5355\u5143\u5fc5\u987b\u7b49\u5f85\u8be5\u670d\u52a1\u542f\u52a8\u6210\u529f\u4e4b\u540e\uff0c\u624d\u80fd\u542f\u52a8\u3002 \u4f46\u662f\u5bf9\u4e8e\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">simple<\/code>\u00a0\u7c7b\u578b\uff0c \u4f9d\u8d56\u4e8e\u8be5\u670d\u52a1\u7684\u5176\u4ed6\u5355\u5143\u65e0\u9700\u7b49\u5f85\uff0c \u5c06\u4f1a\u548c\u8be5\u670d\u52a1\u540c\u65f6\u5e76\u884c\u542f\u52a8\u3002 \u4e0b\u9762\u7684\u7c7b\u4f3c\u5c55\u793a\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u9759\u6001\u9632\u706b\u5899\u670d\u52a1\uff1a<\/p>\n<pre class=\"programlisting\">[Unit]\r\nDescription=\u7b80\u5355\u7684\u9759\u6001\u9632\u706b\u5899\r\n\r\n[Service]\r\nType=oneshot\r\nRemainAfterExit=yes\r\nExecStart=\/usr\/local\/sbin\/simple-firewall-start\r\nExecStop=\/usr\/local\/sbin\/simple-firewall-stop\r\n\r\n[Install]\r\nWantedBy=multi-user.target<\/pre>\n<p>\u56e0\u4e3a\u670d\u52a1\u542f\u52a8\u6210\u529f\u540e\u4e00\u76f4\u5904\u4e8e\"\u6d3b\u52a8\"(active)\u72b6\u6001\uff0c \u6240\u4ee5\u518d\u6b21\u6267\u884c\u00a0<span class=\"command\"><strong>systemctl start<\/strong><\/span>\u00a0\u547d\u4ee4\u4e0d\u4f1a\u6709\u4efb\u4f55\u6548\u679c\u3002<\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"example\">\n<p><a name=\"id-1.10.5\"><\/a><\/p>\n<p class=\"title\"><b>\u4f8b\u00a04.\u00a0\u4f20\u7edf\u7684\u670d\u52a1<\/b><\/p>\n<div class=\"example-contents\">\n<p>\u591a\u6570\u4f20\u7edf\u7684\u5b88\u62a4\u8fdb\u7a0b(\u670d\u52a1)\u5728\u542f\u52a8\u65f6\u4f1a\u8f6c\u5165\u540e\u53f0\u8fd0\u884c\u3002 systemd \u901a\u8fc7\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">forking<\/code>\u00a0\u6765\u652f\u6301\u8fd9\u79cd\u5de5\u4f5c\u65b9\u5f0f\u3002 \u5bf9\u4e8e\u8fd9\u79cd\u7c7b\u578b\u7684\u670d\u52a1\uff0c\u5982\u679c\u6700\u521d\u542f\u52a8\u7684\u8fdb\u7a0b\u5c1a\u672a\u9000\u51fa\uff0c \u90a3\u4e48\u8be5\u5355\u5143\u5c06\u4f9d\u7136\u5904\u4e8e\"\u542f\u52a8\u4e2d\"(activating)\u72b6\u6001\u3002 \u5f53\u6700\u521d\u7684\u8fdb\u7a0b\u6210\u529f\u9000\u51fa\uff0c \u5e76\u4e14\u81f3\u5c11\u6709\u4e00\u4e2a\u8fdb\u7a0b\u4ecd\u7136\u5728\u8fd0\u884c(\u5e76\u4e14\u00a0<code class=\"varname\">RemainAfterExit=<\/code><code class=\"option\">no<\/code>)\uff0c \u8be5\u670d\u52a1\u624d\u4f1a\u88ab\u89c6\u4e3a\u5904\u4e8e\"\u6d3b\u52a8\"(active)\u72b6\u6001\u3002<\/p>\n<p>\u5bf9\u4e8e\u5355\u8fdb\u7a0b\u7684\u4f20\u7edf\u670d\u52a1\uff0c\u5f53\u6700\u521d\u7684\u8fdb\u7a0b\u6210\u529f\u9000\u51fa\u540e\uff0c \u5c06\u4f1a\u53ea\u5269\u5355\u72ec\u4e00\u4e2a\u8fdb\u7a0b\u4ecd\u7136\u5728\u6301\u7eed\u8fd0\u884c\uff0c systemd \u5c06\u4f1a\u628a\u8fd9\u4e2a\u552f\u4e00\u5269\u4f59\u7684\u8fdb\u7a0b\u89c6\u4e3a\u8be5\u670d\u52a1\u7684\u4e3b\u8fdb\u7a0b\u3002 \u4ec5\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u624d\u5c06\u53ef\u4ee5\u5728\u00a0<code class=\"varname\">ExecReload=<\/code>,\u00a0<code class=\"varname\">ExecStop=<\/code>\u00a0\u2026 \u4e4b\u7c7b\u7684\u9009\u9879\u4e2d\u4f7f\u7528\u00a0<code class=\"varname\">$MAINPID<\/code>\u00a0\u53d8\u91cf\u3002<\/p>\n<p>\u5bf9\u4e8e\u591a\u8fdb\u7a0b\u7684\u4f20\u7edf\u670d\u52a1\uff0c\u5f53\u6700\u521d\u7684\u8fdb\u7a0b\u6210\u529f\u9000\u51fa\u540e\uff0c\u5c06\u4f1a\u5269\u4f59\u591a\u4e2a\u8fdb\u7a0b\u5728\u6301\u7eed\u8fd0\u884c\uff0c \u56e0\u6b64\uff0csystemd \u65e0\u6cd5\u786e\u5b9a\u54ea\u4e00\u4e2a\u8fdb\u7a0b\u624d\u662f\u8be5\u670d\u52a1\u7684\u4e3b\u8fdb\u7a0b\u3002 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4e0d\u53ef\u4ee5\u4f7f\u7528\u00a0<code class=\"varname\">$MAINPID<\/code>\u00a0\u53d8\u91cf\u3002 \u7136\u800c\uff0c\u5982\u679c\u4e3b\u8fdb\u7a0b\u4f1a\u521b\u5efa\u4f20\u7edf\u7684PID\u6587\u4ef6\uff0c \u90a3\u4e48\u5e94\u8be5\u5c06\u00a0<code class=\"varname\">PIDFile=<\/code>\u00a0\u8bbe\u4e3a\u6b64PID\u6587\u4ef6\u7684\u7edd\u5bf9\u8def\u5f84\uff0c \u4ee5\u5e2e\u52a9 systemd \u4ece\u8be5PID\u6587\u4ef6\u4e2d\u8bfb\u53d6\u4e3b\u8fdb\u7a0b\u7684PID\uff0c\u4ece\u800c\u5e2e\u52a9\u786e\u5b9a\u8be5\u670d\u52a1\u7684\u4e3b\u8fdb\u7a0b\u3002 \u6ce8\u610f\uff0c\u5b88\u62a4\u8fdb\u7a0b\u5fc5\u987b\u5728\u5b8c\u6210\u521d\u59cb\u5316\u4e4b\u524d\u5199\u5165PID\u6587\u4ef6\uff0c \u5426\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4 systemd \u8bfb\u53d6\u5931\u8d25 (\u8bfb\u53d6\u65f6\u6587\u4ef6\u4e0d\u5b58\u5728)\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a \u5355\u8fdb\u7a0b\u4f20\u7edf\u670d\u52a1\u7684\u793a\u4f8b\uff1a<\/p>\n<pre class=\"programlisting\">[Unit]\r\nDescription=\u4e00\u4e2a\u5355\u8fdb\u7a0b\u4f20\u7edf\u670d\u52a1\r\n\r\n[Service]\r\nType=forking\r\nExecStart=\/usr\/sbin\/my-simple-daemon -d\r\n\r\n[Install]\r\nWantedBy=multi-user.target<\/pre>\n<p>\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>\u00a0\u4ee5\u4e86\u89e3\u5982\u4f55 \u7ed3\u675f\u670d\u52a1\u8fdb\u7a0b\u3002<\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"example\">\n<p><a name=\"id-1.10.6\"><\/a><\/p>\n<p class=\"title\"><b>\u4f8b\u00a05.\u00a0DBus \u670d\u52a1<\/b><\/p>\n<div class=\"example-contents\">\n<p>\u5bf9\u4e8e\u9700\u8981\u5728 D-Bus \u7cfb\u7edf\u603b\u7ebf\u4e0a\u6ce8\u518c\u4e00\u4e2a\u540d\u5b57\u7684\u670d\u52a1\uff0c \u5e94\u8be5\u4f7f\u7528\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">dbus<\/code>\u00a0\u5e76\u4e14\u8bbe\u7f6e\u76f8\u5e94\u7684\u00a0<code class=\"varname\">BusName=<\/code>\u00a0\u503c\u3002 \u8be5\u670d\u52a1\u4e0d\u53ef\u4ee5\u6d3e\u751f\u4efb\u4f55\u5b50\u8fdb\u7a0b\u3002 \u4e00\u65e6\u4ece D-Bus \u7cfb\u7edf\u603b\u7ebf\u6210\u529f\u83b7\u53d6\u6240\u9700\u7684\u540d\u5b57\uff0c\u8be5\u670d\u52a1\u5373\u88ab\u89c6\u4e3a\u521d\u59cb\u5316\u6210\u529f\u3002 \u4e0b\u9762\u662f\u4e00\u4e2a\u5178\u578b\u7684 D-Bus \u670d\u52a1\uff1a<\/p>\n<pre class=\"programlisting\">[Unit]\r\nDescription=\u4e00\u4e2a\u7b80\u5355\u7684 DBus \u670d\u52a1\r\n\r\n[Service]\r\nType=dbus\r\nBusName=org.example.simple-dbus-service\r\nExecStart=\/usr\/sbin\/simple-dbus-service\r\n\r\n[Install]\r\nWantedBy=multi-user.target<\/pre>\n<p>\u5bf9\u4e8e<span class=\"emphasis\"><em>\u57fa\u4e8e D-Bus \u542f\u52a8<\/em><\/span>\u7684\u670d\u52a1 \u6765\u8bf4\uff0c \u4e0d\u53ef\u4ee5\u5305\u542b \"<code class=\"literal\">[Install]<\/code>\" \u5c0f\u8282\uff0c \u800c\u662f\u5e94\u8be5\u5728\u5bf9\u5e94\u7684 D-Bus service \u6587\u4ef6\u4e2d\u8bbe\u7f6e\u00a0<code class=\"varname\">SystemdService=<\/code>\u00a0\u9009\u9879\uff0c\u4f8b\u5982 (<code class=\"filename\">\/usr\/share\/dbus-1\/system-services\/org.example.simple-dbus-service.service<\/code>):<\/p>\n<pre class=\"programlisting\">[D-BUS Service]\r\nName=org.example.simple-dbus-service\r\nExec=\/usr\/sbin\/simple-dbus-service\r\nUser=root\r\nSystemdService=simple-dbus-service.service<\/pre>\n<p>\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u4ee5\u4e86\u89e3\u5982\u4f55 \u7ed3\u675f\u670d\u52a1\u8fdb\u7a0b\u3002<\/p>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<div class=\"example\">\n<p><a name=\"id-1.10.7\"><\/a><\/p>\n<p class=\"title\"><b>\u4f8b\u00a06.\u00a0\u80fd\u591f\u901a\u77e5\u521d\u59cb\u5316\u5df2\u5b8c\u6210\u7684\u670d\u52a1<\/b><\/p>\n<div class=\"example-contents\">\n<p><code class=\"varname\">Type=<\/code><code class=\"option\">simple<\/code>\u00a0\u7c7b\u578b\u7684\u670d\u52a1 \u975e\u5e38\u5bb9\u6613\u7f16\u5199\uff0c \u4f46\u662f\uff0c \u65e0\u6cd5\u5411 systemd \u53ca\u65f6\u901a\u77e5 \"\u542f\u52a8\u6210\u529f\"\u7684\u6d88\u606f\uff0c \u662f\u4e00\u4e2a\u91cd\u5927\u7f3a\u9677\u3002\u00a0<code class=\"varname\">Type=<\/code><code class=\"option\">notify<\/code>\u00a0\u53ef\u4ee5\u5f25\u8865\u8be5\u7f3a\u9677\uff0c \u5b83\u652f\u6301\u5c06\"\u542f\u52a8\u6210\u529f\"\u7684\u6d88\u606f\u53ca\u65f6\u901a\u77e5\u7ed9 systemd \u3002 \u4e0b\u9762\u662f\u4e00\u4e2a\u5178\u578b\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre class=\"programlisting\">[Unit]\r\nDescription=Simple notifying service\r\n\r\n[Service]\r\nType=notify\r\nExecStart=\/usr\/sbin\/simple-notifying-service\r\n\r\n[Install]\r\nWantedBy=multi-user.target<\/pre>\n<p>\u6ce8\u610f\uff0c \u8be5\u5b88\u62a4\u8fdb\u7a0b\u5fc5\u987b\u652f\u6301 systemd \u901a\u77e5\u534f\u8bae\uff0c \u5426\u5219 systemd \u5c06\u4f1a\u8ba4\u4e3a\u8be5\u670d\u52a1\u4e00\u76f4\u5904\u4e8e\"\u542f\u52a8\u4e2d\"(activating)\u72b6\u6001\uff0c\u5e76\u5728\u8d85\u65f6\u540e\u5c06\u5176\u6740\u6b7b\u3002 \u5173\u4e8e\u5982\u4f55\u652f\u6301\u8be5\u901a\u77e5\u534f\u8bae\uff0c\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/sd_notify.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">sd_notify<\/span>(3)<\/span><\/a>\u00a0\u624b\u518c\u3002<\/p>\n<p>\u53c2\u89c1\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>\u00a0\u624b\u518c\u4ee5\u4e86\u89e3\u5982\u4f55 \u7ed3\u675f\u670d\u52a1\u8fdb\u7a0b\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"refsect1\">\n<p><a name=\"id-1.11\"><\/a><\/p>\n<h2 id=\"\u53c2\u89c1\">\u53c2\u89c1<a class=\"headerlink\" title=\"Permalink to this headline\" href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.service.html#%E5%8F%82%E8%A7%81\">\u00b6<\/a><\/h2>\n<p><a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd<\/span>(1)<\/span><\/a>,\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemctl.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemctl<\/span>(1)<\/span><\/a>,\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd-system.conf.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd-system.conf<\/span>(5)<\/span><\/a>,\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.unit.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.unit<\/span>(5)<\/span><\/a>,\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.exec.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.exec<\/span>(5)<\/span><\/a>,\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.resource-control.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.resource-control<\/span>(5)<\/span><\/a>,\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.kill.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.kill<\/span>(5)<\/span><\/a>,\u00a0<a href=\"http:\/\/www.jinbuguo.com\/systemd\/systemd.directives.html#\"><span class=\"citerefentry\"><span class=\"refentrytitle\">systemd.directives<\/span>(7)<\/span><\/a><\/p>\n<\/div>\n<\/div>\n<!--wp-compress-html no compression--><!--wp-compress-html-->","protected":false},"excerpt":{"rendered":"\u7248\u6743\u58f0\u660e \u672c\u6587\u8bd1\u8005\u662f\u4e00\u4f4d\u5f00\u6e90\u7406\u5ff5\u7684\u575a\u5b9a\u652f\u6301\u8005\uff0c\u6240\u4ee5\u672c\u6587\u867d\u7136\u4e0d\u662f\u8f6f\u4ef6\uff0c\u4f46\u662f\u9075\u7167\u5f00\u6e90\u7684\u7cbe\u795e\u53d1\u5e03\u3002 \u65e0\u62c5\u4fdd\uff1a\u672c\u6587\u8bd1\u8005\u4e0d\u4fdd\u8bc1\u8bd1\u6587\u5185\u5bb9\u51c6\u786e\u65e0\u8bef\uff0c\u4ea6\u4e0d\u627f\u62c5\u4efb\u4f55\u7531\u4e8e\u4f7f\u7528\u6b64\u6587\u6863\u6240\u5bfc\u81f4\u7684\u635f\u5931\u3002 \u81ea\u7531\u4f7f\u7528\uff1a\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u81ea \u00b7\u00b7\u00b7","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[111,110,109],"class_list":["post-600","post","type-post","status-publish","format-standard","hentry","category-jiaocheng","tag-111","tag-110","tag-109"],"views":295,"_links":{"self":[{"href":"https:\/\/aichh.com\/api\/wp\/v2\/posts\/600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aichh.com\/api\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aichh.com\/api\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aichh.com\/api\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aichh.com\/api\/wp\/v2\/comments?post=600"}],"version-history":[{"count":2,"href":"https:\/\/aichh.com\/api\/wp\/v2\/posts\/600\/revisions"}],"predecessor-version":[{"id":602,"href":"https:\/\/aichh.com\/api\/wp\/v2\/posts\/600\/revisions\/602"}],"wp:attachment":[{"href":"https:\/\/aichh.com\/api\/wp\/v2\/media?parent=600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aichh.com\/api\/wp\/v2\/categories?post=600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aichh.com\/api\/wp\/v2\/tags?post=600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}