Elasticsearch Cluster JSON-based Cluster Health
Example
Example uses basic HTTP syntax. Any <#> in the example should be removed when copying it.
The _cat APIs are often convenient for humans to get at-a-glance details about the cluster. But you frequently want consistently parseable output to use with software. In general, the JSON APIs are meant for this purpose.
GET /_cluster/health
_cluster/health has existed since Elasticsearch 1.x, but here is an example of its output from Elasticsearch 5.x:
{
"cluster_name": "elasticsearch",
"status": "yellow",
"timed_out": false,
"number_of_nodes": 1,
"number_of_data_nodes": 1,
"active_primary_shards": 45,
"active_shards": 45,
"relocating_shards": 0,
"initializing_shards": 0,
"unassigned_shards": 44,
"delayed_unassigned_shards": 0,
"number_of_pending_tasks": 0,
"number_of_in_flight_fetch": 0,
"task_max_waiting_in_queue_millis": 0,
"active_shards_percent_as_number": 50.56179775280899
}
