PHP-FPM Process CPU 100% Problem Solving method

First, process tracking

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# Top//Find process PID with high CPU usage # Strace-p PID//tracking process # LL/PROC/PID/FD//See which files the process is working on

There will be suspicious PHP code modifications, such as: File_get_contents did not set the timeout time.

second, memory allocation

If process tracking cannot find the problem, and then look at the system for the reason, is it possible that there is not enough memory? It is said that a relatively clean php-cgi open about 20m-30m about the memory, depends on the PHP module to open how much.
Viewing memory usage of php-cgi processes through the PMAP directive
# Pmap $ (pgrep php-cgi |head-1)
By output, the number of processes (Max_children) configured php-cgi, combined with the system's memory size.

Third, monitoring

Finally, the service can be guaranteed to function properly through monitoring and automatic recovery scripts. Here are some of the scripts I used:
Kill a php-cgi process as long as it consumes more memory than%1

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#!/bin/sh Pids= ' PS aux|grep php-cgi|grep-v Grep|awk ' {if ($4>=1) print $} ' For PID in $PIDS Todo echo ' Date +%f....%t ' >>/data/logs/phpkill.log echo $PID >>/data/logs/phpkill.log Kill-9 $PID Done

Detecting PHP-FPM processes

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#!/bin/bash NETSTAT-TNLP | grep "php-cgi" >>/dev/null #2 &>/data/logs/php_fasle.log If ["$?"-eq "1"];then #&& [' netstat-tnlp | grep 9000 | awk ' {print $} ' | awk-f ': "' {print $} '-eq ' 1"] ; then /USR/LOCAL/WEBSERVER/PHP/SBIN/PHP-FPM start echo ' Date +%f....%t ' "System memory OOM. Kill php-cgi. PHP-FPM service start. ">>/data/logs/php_monitor.log Fi

detecting PHP Execution via HTTP

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#!/bin/bash Status= ' Curl-s–head "http://127.0.0.1:8080/chk.php" | awk '/http/{print $} ' If [$status!= "-A $status!=" 304 "]; Then /USR/LOCAL/WEBSERVER/PHP/SBIN/PHP-FPM restart echo ' Date +%f....%t ' "PHP-FPM service restart" >>/data/logs/php_monitor.log Fi

Workaround Two

If you use the above complex, we can follow the steps to monitor and reboot the PHP-FPM to solve the problem.

PHP-FPM Startup script/etc/init.d/php-fpm
Since the beginning of the PHP 5.3.3 has been integrated PHP-FPM so php-fpm after the PHP 5.3.2 version does not support the previous php-fpm (start|restart|stop|reload), do not have to make a special patch, Just to unlock the source directly configure, about the PHP-FPM compilation parameters have

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--ENABLE-FPM--with-fpm-user=www--with-fpm-group=www--with-libevent-dir=libevent

Position
Enter the PHP source code directory, and then:

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Cp-f (Php-5.3.x-source-dir)/sapi/fpm/init.d.php-fpm/etc/init.d/php-fpm

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#! /bin/sh ### BEGIN INIT INFO # PROVIDES:PHP-FPM # Required-start: $remote _fs $network # required-stop: $remote _fs $network # Default-start:2 3 4 5 # default-stop:0 1 6 # Short-description:starts PHP-FPM # description:starts The PHP FastCGI Process Manager Daemon ### End INIT INFO prefix=/usr/local/php Exec_prefix=${prefix} php_fpm_bin=${exec_prefix}/sbin/php-fpm Php_fpm_conf=${prefix}/etc/php-fpm.conf Php_fpm_pid=${prefix}/var/run/php-fpm.pid php_opts= "--fpm-config $php _fpm_conf" Wait_for_pid () { Try=0 While Test $try-LT 35; Todo Case "$" in ' Created ') If [-F "$"]; Then Try= ' Break Fi ;; ' Removed ') if [!-f ' $ ']; Then Try= ' Break Fi ;; Esac Echo-n. try= ' expr $try + 1 ' Sleep 1 Done } Case "$" in Start Echo-n "Starting PHP-FPM" $php _fpm_bin $php _opts If ["$?"!= 0]; Then echo "Failed" Exit 1 Fi Wait_for_pid created $php _fpm_pid If [-N "$try"]; Then echo "Failed" Exit 1 Else echo "Done" Fi ;; Stop Echo-n "gracefully shutting down php-fpm" if [!-R $php _fpm_pid]; Then echo "Warning, no PID file found-php-fpm is not running?" Exit 1 Fi Kill-quit ' Cat $php _fpm_pid ' Wait_for_pid removed $php _fpm_pid If [-N "$try"]; Then echo "failed. Use Force-quit " Exit 1 Else echo "Done" Fi ;; Force-quit) Echo-n "Terminating php-fpm" if [!-R $php _fpm_pid]; Then echo "Warning, no PID file found-php-fpm is not running?" Exit 1 Fi Kill-term ' Cat $php _fpm_pid ' Wait_for_pid removed $php _fpm_pid If [-N "$try"]; Then echo "Failed" Exit 1 Else echo "Done" Fi ;; Restart) $ stop $ start ;; Reload Echo-n "Reload Service PHP-FPM" if [!-R $php _fpm_pid]; Then echo "Warning, no PID file found-php-fpm is not running?" Exit 1 Fi KILL-USR2 ' Cat $php _fpm_pid ' echo "Done" ;; *) echo "Usage: $ {start|stop|force-quit|restart|reload}" Exit 1 ;; Esac

Save after editing and execute the following command

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chmod +x/etc/init.d/php-fpm Chkconfig PHP-FPM on # Check it out # Chkconfig--list PHP-FPM PHP-FPM 0:off 1:off 2:on 3:on 4:on 5:on 6:off

Complete! You can use the following command to manage PHP-FPM

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Service PHP-FPM Start Service PHP-FPM Stop Service PHP-FPM Restart Service PHP-FPM Reload /ETC/INIT.D/PHP-FPM start /ETC/INIT.D/PHP-FPM stop /ETC/INIT.D/PHP-FPM restart /ETC/INIT.D/PHP-FPM Reload

Run service php-fpm start prompt error, how did not find the problem, then know to put the php-fpm.conf in the PID path before: Semicolon delete!