ElasticSearch monitoring
ElasticSearch cluster exposes HTTP endpoint for assessing its stability.
GET _cluster/health
Sample response
{
"cluster_name" : "testcluster",
"status" : "yellow",
"timed_out" : false,
"number_of_nodes" : 1,
"number_of_data_nodes" : 1,
"active_primary_shards" : 5,
"active_shards" : 5,
"relocating_shards" : 0,
"initializing_shards" : 0,
"unassigned_shards" : 5,
"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": 50.0
}
Cluster state can be assessed by value of the property called "status". Below you can find possible values with their interpretation.
Status | Meaning |
---|---|
green | 0 (OK) - Works fine |
yellow | 1 (WARN) - There might be something wrong going on. Needs further attention. |
red | 2 (CRIT) - Serious issue within the cluster. |
Default port for ElasticSearch is 9200/TCP. It can be as well used to check if database is still runing.
Updated over 1 year ago