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See also Monitoring Elasticsearch.
To view the key metrics that indicate the overall health of an Elasticsearch cluster, click Overview in the Elasticsearch section. Anything that needs your attention is highlighted in yellow or red.
Conditions that require your attention are listed at the top of the Clusters page. You can also set up watches to alert you when the status of your cluster changes. To learn how, see Watch Your Cluster Health.
The panel at the top shows the current cluster statistics, the charts show the search and indexing performance over time, and the table at the bottom shows information about any shards that are being recovered.
Not sure what a chart is showing? Click the info button for a description of the metrics.
From there, you can dive into detailed metrics for particular nodes and indices.
To view node metrics, click Nodes. The Nodes section shows the status of each node in your cluster.
Click the name of a node to view its node statistics over time. These represent high-level statistics collected from Elasticsearch that provide a good overview of health.
To view advanced node metrics, click the Advanced tab for a node. The Advanced tab shows additional metrics, such as memory and garbage collection statistics reported by the selected Elasticsearch node.
You can use the advanced node view to diagnose issues that generally involve more advanced knowledge of Elasticsearch, such as poor garbage collection performance.
To view index metrics, click Indices. The Indices section shows the same overall index and search metrics as the Overview and a table of your indices.
From the Indices listing, you can view data for a particular index. To drill down into the data for a particular index, click its name in the Indices table.
To view advanced index metrics, click the Advanced tab for an index. The Advanced tab shows additional metrics, such as memory statistics reported about the Elasticsearch index. If the index has more than one shard, then its shards might live on more than one node.
The Advanced index view can be used to diagnose issues that generally involve more advanced knowledge of Elasticsearch, such as wasteful index memory usage.