elastic-entrypoint.sh

#
# Copyright 2017 Apereo Foundation (AF) Licensed under the
# Educational Community License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may
# obtain a copy of the License at
#
#     http://opensource.org/licenses/ECL-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an "AS IS"
# BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
# or implied. See the License for the specific language governing
# permissions and limitations under the License.
#

#!/bin/sh
set -e

# Add elasticsearch as command if needed
if [ "${1:0:1}" = '-' ]; then
	set -- elasticsearch "$@"
fi

# Drop root privileges if we are running elasticsearch
# allow the container to be started with `--user`
if [ "$1" = 'elasticsearch' -a "$(id -u)" = '0' ]; then
	# Change the ownership of /usr/share/elasticsearch/data to elasticsearch
	chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data

	set -- su-exec elasticsearch tini -- "$@"
	#exec su-exec elasticsearch "$BASH_SOURCE" "$@"
fi

if [ "$1" = 'kopf' -a "$(id -u)" = '0' ]; then
	# Install kopf plugin
	plugin install lmenezes/elasticsearch-kopf/v2.1.1

	# Change the ownership of /usr/share/elasticsearch/data to elasticsearch
	chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data

	set -- su-exec elasticsearch tini -- elasticsearch
	#exec su-exec elasticsearch "$BASH_SOURCE" "$@"
fi

if [ "$1" = 'master' -a "$(id -u)" = '0' ]; then
	# Change node into a master node
	echo "node.master: true" >> /usr/share/elasticsearch/config/elasticsearch.yml
	echo "node.client: false" >> /usr/share/elasticsearch/config/elasticsearch.yml
	echo "node.data: false" >> /usr/share/elasticsearch/config/elasticsearch.yml

	# Change the ownership of /usr/share/elasticsearch/data to elasticsearch
	chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data

	set -- su-exec elasticsearch tini -- elasticsearch
	#exec su-exec elasticsearch "$BASH_SOURCE" "$@"
fi

if [ "$1" = 'client' -a "$(id -u)" = '0' ]; then
	# Change node into a client node
	echo "node.master: false" >> /usr/share/elasticsearch/config/elasticsearch.yml
	echo "node.client: true" >> /usr/share/elasticsearch/config/elasticsearch.yml
	echo "node.data: false" >> /usr/share/elasticsearch/config/elasticsearch.yml
	echo "discovery.zen.ping.unicast.hosts: [\"elastic-master\"]" >> /usr/share/elasticsearch/config/elasticsearch.yml

	# Install kopf plugin
	plugin install lmenezes/elasticsearch-kopf/v2.1.1

	# Change the ownership of /usr/share/elasticsearch/data to elasticsearch
	chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data

	set -- su-exec elasticsearch tini -- elasticsearch
	#exec su-exec elasticsearch "$BASH_SOURCE" "$@"
fi

if [ "$1" = 'data' -a "$(id -u)" = '0' ]; then
	# Change node into a data node
	echo "node.master: false" >> /usr/share/elasticsearch/config/elasticsearch.yml
	echo "node.client: false" >> /usr/share/elasticsearch/config/elasticsearch.yml
	echo "node.data: true" >> /usr/share/elasticsearch/config/elasticsearch.yml
	echo "discovery.zen.ping.unicast.hosts: [\"elastic-master\"]" >> /usr/share/elasticsearch/config/elasticsearch.yml

	# Change the ownership of /usr/share/elasticsearch/data to elasticsearch
	chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data

	set -- su-exec elasticsearch tini -- elasticsearch
	#exec su-exec elasticsearch "$BASH_SOURCE" "$@"
fi

# As argument is not related to elasticsearch,
# then assume that user wants to run his own process,
# for example a `bash` shell to explore this image
exec "$@"