Create Remote Reindex from existing indices

remote-reindex.sh

#!/bin/bash
OLD_CLUSTER=localhost:9201
NEW_CLUSTER=localhost:9202
OLD_CLUSTER_SERVICE=logging-elastic-service-old:9200

indices=$(curl $OLD_CLUSTER/_cat/indices | awk '{ print $3 }')

printf "\n\n+++++reindexing those index+++++++\n"

for index in $indices; do
	# get your indices prefix, write this regex to grasp your indices but skip .kibana index
	if ! [[ $index =~ ^log.*$ ]]; then
		continue
	fi
	printf "\n====Reindexing ${index}====\n"
	# run reindexing API
	curl -XPOST ${NEW_CLUSTER}/_reindex -H 'content-type: application/json' -d "{\"source\":{\"remote\":{\"host\":\"http://${OLD_CLUSTER_SERVICE}\", \"socket_timeout\": \"10m\", \"connect_timeout\": \"1m\"},\"index\":\"${index}\"},\"dest\":{\"index\":\"${index}\"}}"
done