Rolling optimize of an ElasticSearch cluster

optimize.sh

#!/bin/sh

HOST=$1
CURL_BIN=$(which curl)

if [ -z "$HOST" ]; then
  echo "Host is missing"
  exit 1
fi

if [ -z "$CURL_BIN" ]; then
  echo "Curl binary is missing"
  exit 1
fi

while [ true ]; do
  for indice in $(${CURL_BIN} -XGET http://${HOST}:9200/_cat/indices | sort -rk 6 | awk '{print $3}'); do
    if [ ! -z "$indice" ]; then
      echo "Processing indice ${indice}"
      ${CURL_BIN} -XPOST http://${HOST}:9200/${indice}/_optimize?max_num_segments=1
      echo
    fi
  done
done

exit 0