php-fpm经常出现502解决办法

php-fpm经常出现502解决方法

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最近nginx经常502，解决502最好的办法就是重启php-fpm。
手动去重启还是比较麻烦的事情，最好的就是扔到shell里去。

vim restart-php-fpm.sh

<span class="com">#!/bin/sh</span><span class="pln">SERVICE</span><span class="pun">=</span><span class="pln">\'php</span><span class="pun">-</span><span class="pln">fpm\'</span><span class="com">#if ps ax | grep -v grep | grep $SERVICE > /dev/null</span><span class="pln"></span><span class="kwd">if</span><span class="pln"> netstat </span><span class="pun">-</span><span class="pln">anp </span><span class="pun">|</span><span class="pln"> grep </span><span class="lit">9000</span><span class="pln"> </span><span class="pun">></span><span class="pln"> </span><span class="str">/dev/</span><span class="kwd">null</span><span class="pln"></span><span class="kwd">then</span><span class="pln">    echo \"$SERVICE service running</span><span class="pun">,</span><span class="pln"> everything </span><span class="kwd">is</span><span class="pln"> fine\"</span><span class="kwd">else</span><span class="pln">    echo \"$SERVICE </span><span class="kwd">is</span><span class="pln"> </span><span class="kwd">not</span><span class="pln"> running\"    service php</span><span class="pun">-</span><span class="pln">fpm start</span><span class="kwd">fi</span>

本地虚拟机测试了一下，可行，扔到服务器上去，结果发现502的时候并未php-fpm没有进程，而是php-fpm僵死。
所以走了另外一种方案：

vim restart-php-fpm.sh

<span class="com">#!/bin/bash</span><span class="pln">MY_URL</span><span class="pun">=</span><span class="pln">\"http</span><span class="pun">:</span><span class="com">//www.webyang.net\"</span><span class="pln">RESULT</span><span class="pun">=</span><span class="pln">\'curl </span><span class="pun">-</span><span class="pln">I $MY_URL </span><span class="pun">|</span><span class="pln"> grep \"HTTP</span><span class="pun">/</span><span class="lit">1.1</span><span class="pln"> </span><span class="lit">502</span><span class="pln">\"\' </span><span class="kwd">if</span><span class="pln"> </span><span class="pun">[</span><span class="pln"> </span><span class="pun">-</span><span class="pln">n \"$RESULT\" </span><span class="pun">];</span><span class="pln"> </span><span class="kwd">then</span><span class="pln"></span><span class="com">#如果502则会执行这里的内容，随便加或改</span><span class="pln">killall </span><span class="pun">-</span><span class="lit">9</span><span class="pln"> php</span><span class="pun">-</span><span class="pln">cgiservice php</span><span class="pun">-</span><span class="pln">fpm restart</span><span class="kwd">fi</span>

这样的话，还是手动的，如果需要自动，自己添加到crontab里去。
chmod 755 restart-php-fpm.sh
运行crontab -e
设置restart-php-fpm.sh 每一分钟自动执行一次（时间可以按自己要求调）
*/1 * * * * /home/restart-php-fpm.sh
查看设置成功还是失败
crontab -l

或者写一个shell死循环，隔一个时间段去执行即可。