fail2ban_

#!/bin/sh
#
# Wildcard-plugin to monitor bans on Fail2ban jails. To monitor an jail, link
# fail2ban_<jail> to this file. E.g.

#    ln -s /usr/share/node/node/plugins-auto/fail2ban_
#    /etc/munin/node.d/fail2ban_ssh-iptables

# Magic markers (optional - used by munin-config and some installation
# scripts):

#%# family=auto
#%# capabilities=autoconf

JAIL=${0##*/fail2ban_}

case $1 in
  autoconf)
    if [ -x $(which fail2ban-client) ]; then
      echo yes
      exit 0
    else
      echo no
      exit 1
    fi
    ;;
  config)
    echo "graph_title Fail2ban - $JAIL"
    echo 'graph_vlabel active bans'
    echo 'graph_category network'
    echo 'graph_info This graph shows the amount of bans caught by Fail2ban'
    echo "fail2ban.label $JAIL"
    echo 'fail2ban.type GAUGE'
    echo 'fail2ban.info The number of current bans.'
    exit 0
    ;;
esac

echo -n "fail2ban.value "
$(which fail2ban-client) status $JAIL|awk '/Currently banned:/ { print $NF }'