使用jq批量修改es index template的lifecycle配置

aka: use jq tool to modify es index template lifecycle setting in bulk

#!/bin/bash
#set -exu
set -ue
#172.31.45.236
host="127.0.0.1:9200"
username="elastic"
password="elastic"
ilm_name="sw-default-ilm"

curl_options=(
  "-u" "$username:$password"
  "-s"
)

es_sw_templates=`curl ${curl_options[@]} "$host/_cat/templates/sw*?s=name" | awk '{print $1}'`
# bak
curl ${curl_options[@]} "${host}/_index_template?pretty" > es-${host}-sw-*-templates_`date +%F%T`.bak.json

for template in ${es_sw_templates[@]}
do
  echo PUT /_index_template/${template}
  new_template=""
  new_template=`curl ${curl_options[@]} "${host}/_index_template/${template}" | jq '.index_templates[0].index_template |  .template.settings.index.lifecycle.name |= "'${ilm_name}'"'`
  curl -X PUT -H "Content-Type: application/json" ${curl_options[@]} "${host}/_index_template/${template}" -d "${new_template}"
  echo
done