$ curl http://172.16.101.55:9200/_cat

=^.^=

/_cat/allocation

/_cat/shards

/_cat/shards/{index}

/_cat/master

/_cat/nodes

/_cat/tasks

/_cat/indices

/_cat/indices/{index}

/_cat/segments

/_cat/segments/{index}

/_cat/count

/_cat/count/{index}

/_cat/recovery

/_cat/recovery/{index}

/_cat/health

/_cat/pending_tasks

/_cat/aliases

/_cat/aliases/{alias}

/_cat/thread_pool

/_cat/thread_pool/{thread_pools}

/_cat/plugins

/_cat/fielddata

/_cat/fielddata/{fields}

/_cat/nodeattrs

/_cat/repositories

/_cat/snapshots/{repository}

/_cat/templates

$ curl -XGET http://172.16.101.55:9200/_cluster/health?pretty

{

  "cluster_name" : "dev-es",

  "status" : "green",

  "timed_out" : false,

  "number_of_nodes" : ,

  "number_of_data_nodes" : ,

  "active_primary_shards" : ,

  "active_shards" : ,

  "relocating_shards" : ,

  "initializing_shards" : ,

  "unassigned_shards" : ,

  "delayed_unassigned_shards" : ,

  "number_of_pending_tasks" : ,

  "number_of_in_flight_fetch" : ,

  "task_max_waiting_in_queue_millis" : ,

  "active_shards_percent_as_number" : 100.0

}

$ curl -X GET "172.16.101.55:9200/_cat/health?v"

epoch      timestamp cluster status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent

 ::  dev-es  green                                                                            -                100.0%