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Monitor a TiDB Cluster
Learn how to monitor your TiDB cluster.

Monitor a TiDB Cluster

This document describes how to monitor a TiDB cluster on TiDB Cloud.

Cluster status and node status

You can see the current status of each running cluster on the cluster page.

Cluster status

Cluster status Description
Available The cluster is healthy and available.
Creating The cluster is being created. The cluster is inaccessible while it is being created.
Importing Importing data into the cluster.
Maintaining The cluster is in maintenance.
Modifying The cluster is being modified.
Unavailable The cluster has failed and TiDB cannot recover it.
Pausing The cluster is being paused.
Paused The cluster is paused.
Resuming The cluster is being resumed from a pause.
Restoring The cluster is currently being restored from a backup.

TiDB node status

Note:

The TiDB node status is only available for TiDB Dedicated clusters.

TiDB node status Description
Available The TiDB node is healthy and available.
Creating The TiDB node is being created.
Unavailable The TiDB node is not available.
Deleting The TiDB node is being deleted.

TiKV node status

Note:

The TiKV node status is only available for TiDB Dedicated clusters.

TiKV node status Description
Available The TiKV node is healthy and available.
Creating The TiKV node is being created.
Unavailable The TiKV node is not available.
Deleting The TiKV node is being deleted.

Monitoring metrics

In TiDB Cloud, you can view the commonly used metrics of a cluster from the following pages:

  • Cluster overview page
  • Cluster monitoring page

Metrics on the cluster overview page

The cluster overview page provides general metrics of a cluster, including total QPS, query duration, active connections, TiDB CPU, TiKV CPU, TiFlash CPU, TiDB memory, TiKV memory, TiFlash memory, TiKV used storage size, and TiFlash used storage size.

Note:

Some of these metrics might be available only for TiDB Dedicated clusters.

To view metrics on the cluster overview page, take the following steps:

  1. Navigate to the Clusters page.

  2. Choose the target project and click the name of a cluster to go to its cluster overview page.

Metrics on the cluster monitoring page

The cluster monitoring page provides a full set of standard metrics of a cluster. By viewing these metrics, you can easily identify performance issues and determine whether your current database deployment meets your requirements.

Note:

Currently, the cluster monitoring page is unavailable for TiDB Serverless clusters.

To view metrics on the cluster monitoring page, take the following steps:

  1. On the Clusters page of the target project, click the name of the target cluster. The cluster overview page is displayed.
  2. Click Monitoring in the left navigation pane.

For more information, see Built-in Monitoring.