使用 supervisord 运行（和监控）nginx

Question

我将从我的用例开始，因为我很可能没有使用正确的工具来完成这项工作。如果我以错误的方式处理这件事，请告诉我

用例：我有一个 CentOS 服务器托管多个 Web 应用程序。我希望能够相信我的 Web 服务器和应用程序服务器将运行。我的堆栈看起来像

• 网络服务器：nginx
• 应用服务器：uWSGI
• 网络框架：flask / python

我想用supervisord来监控nginx和uWSGI。在我的 /etc/supervisor.conf 中，我有

[program:nginxgo]
command = /usr/sbin/nginx
autostart=true
autorestart=unexpected
exitcodes=0
stdout_logfile=/home/webdev/nginxgo.log
stderr_logfile=/home/webdev/nginxgoerr.log

[program:uwsgi_emperor_go]
command = uwsgi --emperor /etc/uwsgi/emperor.ini
autostart=true
autorestart=unexpected
stopsignal=INT
stdout_logfile=/home/webdev/emp.log
stderr_logfile=/home/webdev/emperr.log
directory=/home/webdev/
user=webdev

我启动了 uWSGI 进程。当我进入[root@mymachine]# /usr/local/bin/supervisord -n -c /etc/supervisord.conf

输出是

2014-11-26 14:07:56,917 CRIT Supervisor running as root (no user in config file)
2014-11-26 14:07:56,951 CRIT Server 'inet_http_server' running without any HTTP authentication checking
2014-11-26 14:07:56,952 INFO supervisord started with pid 31068
2014-11-26 14:07:57,957 INFO spawned: 'nginxgo' with pid 31071
2014-11-26 14:07:57,970 INFO spawned: 'uwsgi_emperor_go' with pid 31072
2014-11-26 14:07:59,095 INFO success: nginxgo entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2014-11-26 14:07:59,095 INFO success: uwsgi_emperor_go entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2014-11-26 14:08:00,601 INFO exited: nginxgo (exit status 1; not expected)
2014-11-26 14:08:01,607 INFO spawned: 'nginxgo' with pid 31079
2014-11-26 14:08:02,684 INFO success: nginxgo entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2014-11-26 14:08:04,189 INFO exited: nginxgo (exit status 1; not expected)
2014-11-26 14:08:05,194 INFO spawned: 'nginxgo' with pid 31080
2014-11-26 14:08:06,264 INFO success: nginxgo entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2014-11-26 14:08:07,771 INFO exited: nginxgo (exit status 1; not expected)
2014-11-26 14:08:08,775 INFO spawned: 'nginxgo' with pid 31081
2014-11-26 14:08:09,808 INFO success: nginxgo entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2014-11-26 14:08:11,314 INFO exited: nginxgo (exit status 1; not expected)
2014-11-26 14:08:12,319 INFO spawned: 'nginxgo' with pid 31082
2014-11-26 14:08:13,381 INFO success: nginxgo entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2014-11-26 14:08:14,886 INFO exited: nginxgo (exit status 1; not expected)
^C2014-11-26 14:08:15,601 INFO spawned: 'nginxgo' with pid 31083
2014-11-26 14:08:15,603 WARN received SIGINT indicating exit request
2014-11-26 14:08:15,611 INFO waiting for nginxgo, uwsgi_emperor_go to die
2014-11-26 14:08:16,738 INFO success: nginxgo entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2014-11-26 14:08:18,242 INFO exited: nginxgo (exit status 1; not expected)
2014-11-26 14:08:19,244 INFO waiting for uwsgi_emperor_go to die
2014-11-26 14:08:21,607 INFO stopped: uwsgi_emperor_go (exit status 0)

看看它怎么说

2014-11-26 14:07:59,095 INFO success: nginxgo entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2014-11-26 14:07:59,095 INFO success: uwsgi_emperor_go entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)

但随后它开始只是循环 nginxgo 进程。我杀与supervisord情况下CTRL-C，我在看htop的nginx master process和worker process都是活动的。

我想要的只是启动nginx和我uWSGI emperor的服务器启动/重启或任一程序失败

Answer 1

supervisord 只能在前台处理进程。nginx 默认作为守护进程在后台运行。

为确保您的 nginx 与 supervisord 一起运行，您必须在 nginx.conf 中设置“daemon off”（另请参阅http://nginx.org/en/docs/ngx_core_module.html#daemon 上的nginx 文档）。