Quick and dirty munin script for monitoring PMS FD/socket counts

munin-node

/etc/munin/plugin-conf.d/munin-node

**snip**

[plex]
user root

plex

/etc/munin/plugins/plex

#!/bin/sh

if [ "$1" = "config" ]; then
    echo 'graph_title Plex FD count'
    echo 'graph_args --base 1000 -l 0'
    echo 'graph_vlabel Count'
    echo 'graph_scale no'
    echo 'graph_category Plex'
    echo 'fd.label FD Count'
    echo 'socket.label Socket Count'
    exit 0
fi

if [ -f /var/run/plexserver.pid ]; then
    PID=`cat /var/run/plexserver.pid`
    echo -n "fd.value "
    ls -l /proc/$PID/fd | grep lrwx | wc -l
    echo -n "socket.value "
    ls -l /proc/$PID/fd | grep lrwx | grep socket | wc -l
else
    echo "fd.value 0"
    echo "socket.value 0"
fi