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. |
| MODIFYING | The cluster is being modified. |
| UNAVAILABLE | The cluster has failed and TiDB cannot recover it. |
| PAUSED | The cluster is paused. |
| RESUMING | The cluster is resuming from a pause. |
| RESTORING | The cluster is currently being restored from a backup. |
TiDB node status
| 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
| 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.
To view metrics on the cluster overview page, take the following steps:
Navigate to the Clusters page.
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.
To view metrics on the cluster monitoring page, take the following steps:
- On the Clusters page of the target project, click the name of the target cluster. The cluster overview page is displayed.
- Click Monitoring in the left navigation pane.
For more information, see Built-in Monitoring.