supervisord_QA

supervisor: couldn’t setuid to 0: Can’t drop privilege as nonroot user supervisor: child process was not spawned (nginx: ERROR (spawn error))

supervisord启动报错：

supervisor: couldn't setuid to 0: Can't drop privilege as nonroot user
supervisor: child process was not spawned
supervisor: couldn't setuid to 0: Can't drop privilege as nonroot user
supervisor: child process was not spawned
supervisor: couldn't setuid to 0: Can't drop privilege as nonroot user
supervisor: child process was not spawned
supervisor: couldn't setuid to 0: Can't drop privilege as nonroot user
supervisor: child process was not spawned
supervisor: couldn't setuid to 0: Can't drop privilege as nonroot user
supervisor: child process was not spawned


[root@VM_1_9_centos ~]# supervisorctl start nginx                        
nginx: ERROR (spawn error)

前半段是nginx错误日志的输出，后半段是supervisor启动nginx的错误输出

问题原因：nginx需要使用监听80端口，只能使用root用户来运行nginx,而supervisord配置文件中指定了 nginx进程和supervisord自身进程使用非root用户启动，导致报错，修改两处用户配置后，重启supervisor配置文件就可以了

supervisorctl reload    #重启supervisord

supervisor error:class ‘socket.error’ [Errno 2] No such file or directory: file:

• 网上别的文章都是说启动时指定配置文件即可

  /usr/bin/supervisord -c /etc/supervisord.conf

• 按照此方法没有解决，经排查是python版本不对，默认python版本为2.6，安装的supervisor需要python2.7

  /app/supervisor/Python-2.7.14/python /usr/bin/supervisord -c /etc/supervisord.conf

supervisord 配置activemq

supervisord判断进程是否存活的条件是应用前台启动
所以是用activemq的前台输出命令console即可

[program:activemq]
command=/app/apache-activemq/bin/activemq console
stdout_logfile=/app/apache-activemq/data/activemq_stdout.log
stdout_logfile_maxbytes=10MB
stderr_logfile=/app/apache-activemq/data/activemq_stderr.log
user=app
stderr_logfile_maxbytes=10MB
autostart=true
autorestart=true