启动agent报错-ERROR ：Failed to connect to previous supervisor.

确认将老的supervisord都杀干净了。可以先ps ax | fgrep supervisord 看下是否有老的进程

[[email protected] ~]# ps ax | fgrep supervisord 

1. python -c 'import socket; print socket.getfqdn(), socket.gethostbyname(socket.getfqdn())'

检测hostname和IP是否对应