Elasticsearch: Get Cluster health at shard level

In previous post, I explained how to get cluster health at index level. “level” parameter takes values as “shards” and givens detailed information at shard level.

GET _cluster/health?level=shards

Response like below.

{
   "cluster_name": "cluster_sample",
   "status": "yellow",
   "timed_out": false,
   "number_of_nodes": 1,
   "number_of_data_nodes": 1,
   "active_primary_shards": 6,
   "active_shards": 6,
   "relocating_shards": 0,
   "initializing_shards": 0,
   "unassigned_shards": 6,
   "indices": {
      "books": {
         "status": "yellow",
         "number_of_shards": 5,
         "number_of_replicas": 1,
         "active_primary_shards": 5,
         "active_shards": 5,
         "relocating_shards": 0,
         "initializing_shards": 0,
         "unassigned_shards": 5,
         "shards": {
            "0": {
               "status": "yellow",
               "primary_active": true,
               "active_shards": 1,
               "relocating_shards": 0,
               "initializing_shards": 0,
               "unassigned_shards": 1
            },
            "1": {
               "status": "yellow",
               "primary_active": true,
               "active_shards": 1,
               "relocating_shards": 0,
               "initializing_shards": 0,
               "unassigned_shards": 1
            },
            "2": {
               "status": "yellow",
               "primary_active": true,
               "active_shards": 1,
               "relocating_shards": 0,
               "initializing_shards": 0,
               "unassigned_shards": 1
            },
            "3": {
               "status": "yellow",
               "primary_active": true,
               "active_shards": 1,
               "relocating_shards": 0,
               "initializing_shards": 0,
               "unassigned_shards": 1
            },
            "4": {
               "status": "yellow",
               "primary_active": true,
               "active_shards": 1,
               "relocating_shards": 0,
               "initializing_shards": 0,
               "unassigned_shards": 1
            }
         }
      },
      ".marvel-2015.01.07": {
         "status": "yellow",
         "number_of_shards": 1,
         "number_of_replicas": 1,
         "active_primary_shards": 1,
         "active_shards": 1,
         "relocating_shards": 0,
         "initializing_shards": 0,
         "unassigned_shards": 1,
         "shards": {
            "0": {
               "status": "yellow",
               "primary_active": true,
               "active_shards": 1,
               "relocating_shards": 0,
               "initializing_shards": 0,
               "unassigned_shards": 1
            }
         }
      }
   }
}

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