reassign unassigned shards in elastic

reassign_shards.sh

#!/usr/bin/env bash
read -e -p 'Give cluster IP:' -i "$( hostname )" IP
read -e -p 'Give cluster node:'  -i "$( hostname )" NODE
read -e -p 'any node suffix?:' -i '_es-01' SUFFIX
IFS=$'\n'
for line in $(curl -s "$IP:9200/_cat/shards" | fgrep UNASSIGNED); do
  INDEX=$(echo $line | (awk '{print $1}'))
  SHARD=$(echo $line | (awk '{print $2}'))

  echo "Reassigning $SHARD $INDEX"
  curl -XPOST "$IP:9200/_cluster/reroute" -d '{
     "commands": [
        {
            "allocate": {
                "index": "'$INDEX'",
                "shard": '$SHARD',
                "node": "'$NODE$SUFFIX'",
                "allow_primary": true
          }
        }
    ]
  }'
done