Simple collectd Exec plugin example

collectd.txt

# plugin_exec.conf 
LoadPlugin exec
<Plugin exec>
  Exec "user" "/opt/collectd/etc/metrics/grep_stuff.sh"
</Plugin>

# grep_stuff.sh
HOSTNAME="${COLLECTD_HOSTNAME:-localhost}"
INTERVAL="${COLLECTD_INTERVAL:-60}"

while sleep "$INTERVAL"; do
  RES=$(find /logs/file.*.log -mtime -1 -exec grep --line-buffered "StuffToFind" '{}' \; | wc -l)
  echo "PUTVAL \"$HOSTNAME/grep_log/gauge-stuff\" interval=$INTERVAL N:$RES"
done