Elasticsearch: migrate ALL shards from a master node to other nodes (e.g. mark all shards to move to other node before shutting down)

elasticsearch_move_all_shards.sh

#!/bin/bash

# cluster
server="10.10.10.153:9200"

# new master node name
target="node123"

# fetch all index names
indices=`curl $server/_cat/indices?h=index`

# if only one node should be left, set to 0 to change settings too
number_of_replicas=0

for index in $indices
do
        echo
        echo "Moving $index..."
        curl -XPUT $server/$index/_settings  -H 'Content-Type: application/json' -d '{ "index.routing.allocation.include._name": "es.portal02.pludoni.com", "index.number_of_replicas": $number_of_replicas}'
done