nginx+fpm记录php的error log

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mb5fed4c003aebe 2013-01-09 18:57:00

前言

将架构从apache+mod_php迁移到nginx+fpm上，会发现如果php脚本出错，nginx的eror_log里不会有记录，只在access_log里记录了500状态码。出现的原因：nginx将php的脚本执行通过fastcgi转到fpm上，所以出错的信息当然不会记录在nginx的error_log里了，但是对于测试环境下程序员的调试这是个悲剧啊，所以我们需要配置fpm的错误日志

php5-fpm.conf

php5-fpm的错误日志是在php5-fpm.conf全局配置中进行设置，查看一下php5-fpm.conf日志：

;;;;;;;;;;;;;;;;;; ; Global Options ; ;;;;;;;;;;;;;;;;;;  [global] ; Pid file ; Note: the default prefix is /var ; Default Value: none ;pid = run/php-fpm.pid pid = /var/run/php5-fpm.pid  ; Error log file ; If it's set to "syslog", log is sent to syslogd instead of being written ; in a local file. ; Note: the default prefix is /var ; Default Value: log/php-fpm.log ; error_log = log/php-fpm.log #配置error_log，设置error_log的存放位置 error_log = /var/log/fpm/php5-fpm.error.log  ; syslog_facility is used to specify what type of program is logging the ; message. This lets syslogd specify that messages from different facilities ; will be handled differently. ; See syslog(3) for possible values (ex daemon equiv LOG_DAEMON) ; Default Value: daemon ;syslog.facility = daemon  ; syslog_ident is prepended to every message. If you have multiple FPM ; instances running on the same server, you can change the default value ; which must suit common needs. ; Default Value: php-fpm ;syslog.ident = php-fpm  ; Log level ; Possible Values: alert, error, warning, notice, debug ; Default Value: notice #错误级别(生产环境下应该提高错误级别，推荐error) log_level = notice  #表示在emergency_restart_interval所设时间内出现SIGSEGV或者SIGBUS错误的php-cgi进程数如果超过emergency_restart_threshold个，php-fpm就会优雅重启 emergency_restart_threshold = 60 emergency_restart_interval = 60s  ; Time limit for child processes to wait for a reaction on signals from master. ; Available units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;process_control_timeout = 0  ; The maximum number of processes FPM will fork. This has been design to control ; the global number of processes when using dynamic PM within a lot of pools. ; Use it with caution. ; Note: A value of 0 indicates no limit ; Default Value: 0 ; process.max = 128  ; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging. ; Default Value: yes #后台执行fpm，设置为yes daemonize = yes

pool.d目录下配置文件(例如:www.conf)

（1）保证配置文件中一个参数的开启，参数定义看英文注释很清楚：

; Redirect worker stdout and stderr into main error log. If not set, stdout and ; stderr will be redirected to /dev/null according to FastCGI specs. ; Note: on highloaded environement, this can cause some delay in the page ; process time (several ms). ; Default Value: no catch_workers_output = yes

（2）同时可以开启access_log和slow_log

access.log = /var/log/fpm/php5-fpm.access.log  ; The access log format. ; The following syntax is allowed ;  %%: the '%' character ;  %C: %CPU used by the request ;      it can accept the following format: ;      - %{user}C for user CPU only ;      - %{system}C for system CPU only ;      - %{total}C  for user + system CPU (default) ;  %d: time taken to serve the request ;      it can accept the following format: ;      - %{seconds}d (default) ;      - %{miliseconds}d ;      - %{mili}d ;      - %{microseconds}d ;      - %{micro}d ;  %e: an environment variable (same as $_ENV or $_SERVER) ;      it must be associated with embraces to specify the name of the env ;      variable. Some exemples: ;      - server specifics like: %{REQUEST_METHOD}e or %{SERVER_PROTOCOL}e ;      - HTTP headers like: %{HTTP_HOST}e or %{HTTP_USER_AGENT}e ;  %f: script filename ;  %l: content-length of the request (for POST request only) ;  %m: request method ;  %M: peak of memory allocated by PHP ;      it can accept the following format: ;      - %{bytes}M (default) ;      - %{kilobytes}M ;      - %{kilo}M ;      - %{megabytes}M ;      - %{mega}M ;  %n: pool name ;  %o: ouput header ;      it must be associated with embraces to specify the name of the header: ;      - %{Content-Type}o ;      - %{X-Powered-By}o ;      - %{Transfert-Encoding}o ;      - .... ;  %p: PID of the child that serviced the request ;  %P: PID of the parent of the child that serviced the request ;  %q: the query string  ;  %Q: the '?' character if query string exists ;  %r: the request URI (without the query string, see %q and %Q) ;  %R: remote IP address ;  %s: status (response code) ;  %t: server time the request was received ;      it can accept a strftime(3) format: ;      %d/%b/%Y:%H:%M:%S %z (default) ;  %T: time the log has been written (the request has finished) ;      it can accept a strftime(3) format: ;      %d/%b/%Y:%H:%M:%S %z (default) ;  %u: remote user ; ; Default: "%R - %u %t \"%m %r\" %s" ;access.format = %R - %u %t "%m %r%Q%q" %s %f %{mili}d %{kilo}M %C%%   ; The log file for slow requests ; Default Value: not set ; Note: slowlog is mandatory if request_slowlog_timeout is set slowlog = /var/log/fpm/php5-fpm.log.slow   ; The timeout for serving a single request after which a PHP backtrace will be ; dumped to the 'slowlog' file. A value of '0s' means 'off'. ; Available units: s(econds)(default), m(inutes), h(ours), or d(ays) ; Default Value: 0 request_slowlog_timeout = 3

fpm日志按天分割脚本

#!/bin/bash -   #1.fpm日志存放路径 php5_fpm_path="/var/log/php5-fpm"  path_array=($php5_fpm_path)   #2.日志标识前缀数组 icontact_fpm_sign="test" test_fpm_sign="php5-fpm"  prefix_array=($icontact_fpm_sign $test_fpm_sign)   #3.日志success or slow 标识后缀数组 bool_array=("access" "slow" "error")   #4.nginx日志切割备份后缀 postfix=`date +%Y%m%d`".log"   #5.备份当前的日志文件，重命名改为日期后缀 for path in ${path_array[*]} do  for prefix in ${prefix_array[*]}  do   for bool in ${bool_array[*]}   do    file=$path/$prefix.$bool.log    backfile=$path/$prefix.$bool.$postfix    if [ -e $file ]    then     mv $file  $backfile    fi   done  done done   #6.查找nginx进程号,让其产生新的日志文件 fpm_pid=`ps -aux |grep -E 'php-fpm: master process'|grep -v 'grep'|awk '{print $2}'` #USR1:Reopen log files,刷新nginx日志文件 kill -USR1 $fpm_pid