# Start Cluster

Launch stage: GA

`POST /api/2.1/clusters/start`

Starts a terminated Spark cluster with the supplied ID. This works similar to `createCluster` except:
   - The previous cluster id and attributes are preserved.
   - The cluster starts with the last specified cluster size.
      - If the previous cluster was an autoscaling cluster, the current cluster starts with
        the minimum number of nodes.
   - If the cluster is not currently in a ``TERMINATED`` state, nothing will happen.
   - Clusters launched to run a job cannot be started.

API scopes: clusters

## Request body

- `cluster_id` (string, optional)
  The cluster to be started.
  Example: `1202-211320-brick1`

## Response

```json
{}
```