启动时出现Fail2ban错误

Question

最近尝试重启Fail2ban，收到错误，无法启动……我收到的完整错误systemctl status fail2ban如下：

Jan 03 18:27:02 nerdofcode.com systemd[1]: fail2ban.service: Control process exited, code=exited status=255
Jan 03 18:27:02 nerdofcode.com systemd[1]: Failed to start Fail2Ban Service.
Jan 03 18:27:02 nerdofcode.com systemd[1]: fail2ban.service: Unit entered failed state.
Jan 03 18:27:02 nerdofcode.com systemd[1]: fail2ban.service: Failed with result 'exit-code'.
Jan 03 18:27:02 nerdofcode.com systemd[1]: fail2ban.service: Service hold-off time over, scheduling restart.
Jan 03 18:27:02 nerdofcode.com systemd[1]: Stopped Fail2Ban Service.
Jan 03 18:27:02 nerdofcode.com systemd[1]: fail2ban.service: Start request repeated too quickly.
Jan 03 18:27:02 nerdofcode.com systemd[1]: Failed to start Fail2Ban Service.
Jan 03 18:27:02 nerdofcode.com systemd[1]: fail2ban.service: Unit entered failed state.
Jan 03 18:27:02 nerdofcode.com systemd[1]: fail2ban.service: Failed with result 'exit-code'.

的完整输出cat /var/log/fail2ban.log是：

2018-01-03 18:06:28,337 fail2ban.server         [25119]: INFO    
Exiting Fail2ban

我将不胜感激对此问题的任何建议或解决方案。

Answer 1

很有可能错误已被记录到，/var/log/fail2ban.log但是您也可以通过运行查看问题所在，fail2ban-client -x start并且您将获得一些描述性信息。

就我而言，它是一个尚不存在的 exim 拒绝日志。

感谢@bistoco 对这个问题的评论。