1. curl   http://192.168.12.128:9200/_cat/health?v

2.  http://192.168.1.33:9200/_cat/shards

3. curl -XPUT http://192.168.12.128:9200/_settings?pretty -d '{ "index": { "number_of_replicas": 0 } }' -H "Content-Type: application/json"