/etc/monit/monitrc.d/fail2ban is in fail2ban 0.10.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | check process fail2ban with pidfile /var/run/fail2ban/fail2ban.pid
group services
start program = "/etc/init.d/fail2ban force-start"
stop program = "/etc/init.d/fail2ban stop"
if failed unixsocket /var/run/fail2ban/fail2ban.sock then restart
if 5 restarts within 5 cycles then timeout
check file fail2ban_log with path /var/log/fail2ban.log
if match "ERROR|WARNING" then alert
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