Ubuntu php5-fpm重新加载时抛出未知实例 [英] Ubuntu php5-fpm throws unknown instance on reload
问题描述
我的VPS上存在ubuntu和php5-fpm的问题. PHP工作正常，但是当我尝试重新加载/重新启动/停止它时，它会引发终端错误.基本上，我无法停止php，因为它无法识别实例
I am having some problems with ubuntu and php5-fpm on my VPS. Php works fine, however it throws terminal error when I am trying to reload / restart / stop it. Basically, I cannot stop php because it does not recognize the instance
显示重新加载:未知实例:" 如果我尝试"service php5-fpm restart"，它会说未知实例，并在日志中给出
It says "reload: Unknown instance:" If I try "service php5-fpm restart" it sais unknown instance and gives this in logs
[15-Nov-2013 11:56:40] ERROR: An another FPM instance seems to already listen on /var/run/php5-fpm.sock
[15-Nov-2013 11:56:40] ERROR: FPM initialization failed
[15-Nov-2013 11:56:40] NOTICE: configuration file /etc/php5/fpm/php-fpm.conf test is successful
我在/var/run/php5-fpm.sock上监听了php； 我将nginx用于Web服务器，并使用
I have php listening on /var/run/php5-fpm.sock ; I use nginx for webserver and it is correctly configured with
fastcgi_pass unix:/var/run/php5-fpm.sock;
(或者我知道) 还需要提及的是，这种情况是在重启后发生的.
(or so I know) Also need to mention that this happened after a reboot.
站点运行良好，但是我认为这不是一个好兆头.有什么想法吗 ? 谢谢.
Site is working well, however I don't think this is a good sign. Any thoughts ? Thank you.
我按照下面的帖子中的建议进行操作.看来，如果我取消了该进程，然后使用启动/停止它就可以正常工作.但是，使用reload命令后，它将停止重新确认实例.
EDIT : I did as suggested in below post. It seems that if i kill the process, and then use start/stop it works fine. However, after I use reload command, it stops recongizing the instance.
root@developer2:/# service php5-fpm stop
stop: Unknown instance:
root@developer2:/# ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 Nov14 ? 00:00:00 init
root 1101 1 0 Nov14 ? 00:00:00 /sbin/udevd --daemon
root 1168 1 0 Nov14 ? 00:00:00 /usr/sbin/sshd -D
root 1227 1 0 Nov14 ? 00:00:00 /usr/sbin/xinetd -dontfork -pidfile /var/run/xinetd.pid -stayalive -inetd_compa
root 1229 1 0 Nov14 ? 00:00:00 cron
mysql 1249 1 0 Nov14 ? 00:00:18 /usr/sbin/mysqld
syslog 1283 1 0 Nov14 ? 00:00:00 /sbin/syslogd -u syslog
memcache 1293 1 0 Nov14 ? 00:00:07 /usr/bin/memcached -m 64 -p 11211 -u memcache -l 127.0.0.1
root 1426 1 0 Nov14 ? 00:00:00 /usr/lib/postfix/master
postfix 1440 1426 0 Nov14 ? 00:00:00 qmgr -l -t fifo -u
root 1468 1 0 Nov14 ? 00:00:00 /usr/sbin/varnishd -P /var/run/varnishd.pid -a :80 -T localhost:6082 -f /etc/va
nobody 1469 1468 0 Nov14 ? 00:01:14 /usr/sbin/varnishd -P /var/run/varnishd.pid -a :80 -T localhost:6082 -f /etc/va
root 1593 1 0 Nov14 ? 00:00:14 /usr/bin/python /usr/bin/fail2ban-server -b -s /var/run/fail2ban/fail2ban.sock
root 1595 1 0 Nov14 ? 00:00:00 /usr/lib/gamin/gam_server
www-data 3535 1 0 Nov14 ? 00:00:30 php-fpm: pool www
postfix 10016 1426 0 11:18 ? 00:00:00 pickup -l -t fifo -u -c
root 10064 1168 0 11:37 ? 00:00:00 sshd: root@pts/0
root 10080 10064 0 11:37 pts/0 00:00:00 -bash
root 10143 1168 0 11:47 ? 00:00:00 sshd: root@notty
root 10159 10143 0 11:47 ? 00:00:00 /usr/lib/openssh/sftp-server
root 11330 1 0 12:03 ? 00:00:00 nginx: master process /usr/sbin/nginx
www-data 11331 11330 0 12:03 ? 00:00:00 nginx: worker process
www-data 11332 11330 0 12:03 ? 00:00:00 nginx: worker process
www-data 11333 11330 0 12:03 ? 00:00:00 nginx: worker process
www-data 11334 11330 0 12:03 ? 00:00:00 nginx: worker process
root 11465 1168 0 12:14 ? 00:00:00 sshd: root@notty
root 11481 11465 0 12:14 ? 00:00:00 /usr/lib/openssh/sftp-server
root 11519 10080 0 12:23 pts/0 00:00:00 ps -ef
root@developer2:/# kill 3535
root@developer2:/# service php5-fpm start
php5-fpm start/running, process 11529
root@developer2:/# service php5-fpm stop
php5-fpm stop/waiting
root@developer2:/# service php5-fpm start
php5-fpm start/running, process 11544
root@developer2:/# service php5-fpm stop
php5-fpm stop/waiting
root@developer2:/# service php5-fpm start
php5-fpm start/running, process 11559
root@developer2:/# service php5-fpm reload
root@developer2:/# service php5-fpm reload
reload: Unknown instance:
我的php5似乎创建了3个进程
Edit 2 : my php5 seems to create 3 processes
root 11813 1 1 12:34 ? 00:00:00 php-fpm: master process (/etc/php5/fpm/php-fpm.conf)
www-data 11815 11813 0 12:34 ? 00:00:00 php-fpm: pool www
www-data 11816 11813 0 12:34 ? 00:00:00 php-fpm: pool www
当我使用重载功能时，主进程消失了，我必须手动杀死其他2个进程才能重新正确启动它.
When I use reload function the master process dissapears and I have to manually kill the other 2 processes in order to be able to correctly start it again.
推荐答案
这是Ubuntu错误.在/etc/init/php5-fpm.conf中，有一条注释掉的行reload signal USR2，该行使reload函数通过发送SIGHUP终止php5-fpm主进程.任何进一步的重新加载，重启或
停止将失败，因为主进程已终止.
This is a Ubuntu bug. In /etc/init/php5-fpm.conf, there is a commented-out line reload signal USR2, which causes the reload function to terminate the php5-fpm master process by sending SIGHUP. Any further reloads, restarts or
stops will fail, because the master process has been terminated.
我在Ubuntu 14.04中通过创建其中包含单行reload signal USR2的文件/etc/init/php5-fpm.override修复了此问题.归功于此答案中的朱利安·斯鲁曼(Jurian Sluiman)的评论.
I fixed this in Ubuntu 14.04 by creating a file /etc/init/php5-fpm.override with the single line reload signal USR2 in it. Credits to Jurian Sluiman's comment in this answer.
$ ps aux | grep php
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1966 0.0 0.9 473276 37040 ? Ss 10:03 0:00 php-fpm: master process (/etc/php5/fpm/php-fpm.conf)
www-data 2009 0.0 1.5 478280 62500 ? S 10:03 0:01 php-fpm: pool www
www-data 2011 0.0 1.3 476504 55220 ? S 10:03 0:00 php-fpm: pool www
www-data 2012 0.0 1.6 481592 65840 ? S 10:03 0:00 php-fpm: pool www
$ sudo service php5-fpm status
php5-fpm start/running, process 1966
$ sudo service php5-fpm stop
php5-fpm stop/waiting
$ sudo service php5-fpm status
php5-fpm stop/waiting
$ sudo service php5-fpm start
php5-fpm start/running, process 2651
$ sudo service php5-fpm status
php5-fpm start/running, process 2651
$ ps aux | grep php
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 2651 0.2 0.9 473276 36996 ? Ss 10:35 0:00 php-fpm: master process (/etc/php5/fpm/php-fpm.conf)
www-data 2654 0.0 0.1 473276 7104 ? S 10:35 0:00 php-fpm: pool www
www-data 2655 0.0 0.1 473276 7104 ? S 10:35 0:00 php-fpm: pool www
www-data 2656 0.0 0.1 473276 7104 ? S 10:35 0:00 php-fpm: pool www
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