Reallocating ElasticSearch Unassigned Shards

elasticsearch_realloc_unassign_shards.sh

#!/bin/bash
set -f
IFS='
'

# NOTE1: file 'list_of_unassigned_shards.txt' should be present
# NOTE2: list of unassigned shards in file should be in '<SHARD> <INDEX>' format (per line).

MASTER_NODE='anDcaGBJRY2WXJe_rOjdMQ'  # master node in cluster
MASTER_NODE_IP='10.199.242.111'       # ip address of master node in cluster

for i in `cat list_of_unassigned_shards.txt`; do
  SHARD=`echo $i | awk -F ' ' '{print $1}'`
  INDEX=`echo $i | awk -F ' ' '{print $2}'`
  POST_STRING="{\"commands\":[{\"allocate\":{\"index\":\"${INDEX}\",\"shard\":${SHARD},\"node\":\"${MASTER_NODE}\",\"allow_primary\":1}}]}'"
  curl XPOST -s "http:\/\/${MASTER_NODE_IP}:9200\/_cluster\/reroute?pretty=true" -d $POST_STRING &>/dev/null
done

exit 0