start.sh

#!/bin/bash
#
# /usr/local/bin/start.sh
# Start Elasticsearch, Logstash and Kibana services
#
# spujadas 2015-10-09; added initial pidfile removal and graceful termination

# WARNING - This script assumes that the ELK services are not running, and is
#   only expected to be run once, when the container is started.
#   Do not attempt to run this script if the ELK services are running (or be
#   prepared to reap zombie processes).


## handle termination gracefully

_term() {
  echo "Terminating ELK"
  service elasticsearch stop
  service logstash stop
  service kibana stop
  exit 0
}

trap _term SIGTERM


## remove pidfiles in case previous graceful termination failed
# NOTE - This is the reason for the WARNING at the top - it's a bit hackish, 
#   but if it's good enough for Fedora (https://goo.gl/88eyXJ), it's good
#   enough for me :)

rm -f /var/run/elasticsearch/elasticsearch.pid /var/run/logstash.pid \
  /var/run/kibana4.pid


## start services

service elasticsearch start
service logstash start

# wait for elasticsearch to start up
# - https://github.com/elasticsearch/kibana/issues/3077
counter=0
while [ ! "$(curl localhost:9200 2> /dev/null)" -a $counter -lt 30  ]; do
  sleep 1
  ((counter++))
  echo "waiting for Elasticsearch to be up ($counter/30)"
done

service kibana start

tail -f /var/log/elasticsearch/elasticsearch.log &
wait