librato.conf

# put in /etc/init/librato.conf and start with 'sudo start librato'

description "collect metrics"

start on (local-filesystems and net-device-up IFACE!=lo)

respawn

env EMAIL=<your email>
env TOKEN=<your librato token>
env INTERVAL=30

script
  SOURCE=`hostname`

  while true ; do
    CPU_PCT=$(ps aux | awk '{s=s+$3}; END {print s}')
    MEM_PCT=$(ps aux | awk '{s=s+$4}; END {print s}')

    # prevent network or API problems from hitting the respawn limit
    if nc -w 1 -z metrics-api.librato.com 80 ; then

    curl -u ${EMAIL}:${TOKEN}           \
         -d 'gauges[0][name]=CPU'       \
         -d 'gauges[0][value]='$CPU_PCT \
         -d 'gauges[0][source]='$SOURCE \
         -d 'gauges[1][name]=MEM'       \
         -d 'gauges[1][value]='$MEM_PCT \
         -d 'gauges[1][source]='$SOURCE \
         -X POST https://metrics-api.librato.com/v1/metrics

    fi

    sleep $INTERVAL
  done

end script