Poll rrdcache stats from control socket for Ganglia

rrdcache-stats.sh

#!/bin/bash
#
# rrdcache-stats.sh
# @jbuchbinder
#

GMETRIC="/usr/bin/gmetric"

( echo "STATS"; sleep 1; echo "QUIT" ) | \
  sudo socat - unix:/var/rrdtool/rrdcached/rrdcached.sock | \
  grep ':' | \
  while read X; do
    K="$( echo "$X" | cut -d: -f1 )"
    V="$( echo "$X" | cut -d: -f2 )"
    $GMETRIC -g rrdcached -t uint32 -n "rrdcached_stat_${K}" -v ${V} -x 300 -d 300
  done