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I've been running fail2ban successfully for a long time on RHEL.

Now all of a sudden starting, stopping and restarting via /etc/init.d/fail2ban no longer works:

# /etc/init.d/fail2ban start
Starting fail2ban: [  OK  ]

# service fail2ban status
Fail2ban (pid 31808) is running...
ERROR  Unable to contact server. Is it running?

# /etc/init.d/fail2ban stop
Stopping fail2ban: [FAILED]

However if I do it this way it works:

# /usr/bin/fail2ban-client start
2014-02-11 15:46:13,863 fail2ban.server : INFO   Starting Fail2ban v0.8.4
2014-02-11 15:46:13,863 fail2ban.server : INFO   Starting in daemon mode

# /usr/bin/fail2ban-client status
Status
|- Number of jail:      10
`- Jail list: ...

#/usr/bin/fail2ban-client stop
Shutdown successful

The file /etc/init.d/fail2ban hasn't changed and I can't see anything wrong with it.

1

I figured it out.

There was a rogue fail2ban process running. After I killed it, fail2ban now restarts in the usual manner.

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  • Hi, I am facing the same issue too! Could you please tell me how you did this. Thanks! – SidS May 11 '17 at 21:18
  • It was a while ago so I don't recall. I'm guessing I did top found the process in question and did kill pid but that's assuming you have a rogue process running like I did – MrCarrot May 11 '17 at 21:21

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