supervisor 启动失败报错
Error: Another program is already listening on a port that one of our HTTP servers is configured to use. Shut this program down first before starting supervisord.
解决办法：
unlink /var/run/supervisor.sock
unlink /tmp/supervisor.sock
这个错误的原因就是supervisor.sock这个文件会被系统自动删除或者其它原因不存在了，删除软连接就可以了。
supervisor.sock生成的位置可以去supervisor的配置文件中找到。
转: https://www.jianshu.com/p/d8901ce4712b
supervisor安装点这里: https://www.jianshu.com/p/5c3922fa97c0