> For the complete documentation index, see [llms.txt](https://upsolver.gitbook.io/content/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://upsolver.gitbook.io/content/reference-1/sql-commands/clusters/stop-start-cluster.md).

# STOP/START CLUSTER

The following command can be used to start or stop a given cluster. 

{% hint style="warning" %}
Any job or table that is configured to run on a stopped cluster will not run. Jobs and tables that depend on jobs that are running on a stopped cluster will also be blocked.
{% endhint %}

## Syntax

```sql
{ START | STOP } CLUSTER <cluster_name>
```

## Stop or start a cluster from the UI

### Stop cluster

To stop a running cluster, from the Upsolver main menu, click **Clusters**. On the **Clusters** page, select the cluster you want to stop from the list in the table. This opens the monitoring page. In the top right-hand corner of the screen, click the **Stop Cluster** button to display the confirmation modal. Choose **Stop Cluster**, and the cluster stops with immediate effect, or **Cancel** to exit without saving changes.    &#x20;

Optionally, you can click **Copy**, to copy the code and paste this into a worksheet if you want to run it manually.&#x20;

{% hint style="danger" %}
**Note**

A cluster that is paused for longer than the source retention period may result in data loss.
{% endhint %}

### Start cluster

To re-start a stopped cluster, from the **Clusters** page, click on the cluster you want to resume, and then click the **Start Cluster** button. This opens the confirmation modal. Click **Start Cluster** to start the cluster with immediate effect, or **Cancel** to exit without saving changes.

Alternatively, copy the code into a worksheet and run this manually.


---

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