# `pcluster start`


Starts the compute fleet for a cluster that has been stopped.

```
pcluster start [ -h ] [ -c CONFIG_FILE ] [ -r REGION ] cluster_name
```

## Positional arguments


***cluster\$1name***  
Starts the compute fleet of the provided cluster name.

## Named arguments


**-h, --help**  
Shows the help text for `pcluster start`.

**-c *CONFIG\$1FILE*, --config *CONFIG\$1FILE***  
Specifies the alternative configuration file to use.  
Defaults to `~/.parallelcluster/config`.

**-r *REGION*, --region *REGION***  
Specifies the AWS Region to use. Defaults to the AWS Region specified by using the [`pcluster configure`](pcluster.configure.md) command.

**Example using AWS ParallelCluster version 2.11.7:**

```
$ pcluster start mycluster
Compute fleet status is: RUNNING. Submitting status change request.
Request submitted successfully. It might take a while for the transition to complete.
Please run 'pcluster status' if you need to check compute fleet status
```

This command sets the Auto Scaling Group parameters to one of the following: 
+ The initial configuration values (`max_queue_size` and `initial_queue_size`) from the template that was used to create the cluster.
+ The configuration values that were used to update the cluster since it was first created.