# Environments

When you create a cluster with `cortex cluster up`, an environment named `aws` is automatically created to point to your cluster and is configured to be the default environment. You can name the environment something else via the `--configure-env` flag, e.g. `cortex cluster up --configure-env prod`. You can also use the `--configure-env` flag with `cortex cluster info` and `cortex cluster configure` to create / update the specified environment.

You can list your environments with `cortex env list`, change the default environment with `cortex env default`, delete an environment with `cortex env delete`, and create/update an environment with `cortex env configure`.

## Multiple clusters

```bash
cortex cluster up cluster1.yaml --configure-env cluster1  # configures the cluster1 env
cortex cluster up cluster2.yaml --configure-env cluster2  # configures the cluster2 env

cortex deploy --env cluster1
cortex logs my-api --env cluster1
cortex delete my-api --env cluster1

cortex deploy --env cluster2
cortex logs my-api --env cluster2
cortex delete my-api --env cluster2
```

## Multiple clusters, if you omitted the `--configure-env` on `cortex cluster up`

```bash
cortex cluster info cluster1.yaml --configure-env cluster1  # configures the cluster1 env
cortex cluster info cluster2.yaml --configure-env cluster2  # configures the cluster2 env

cortex deploy --env cluster1
cortex logs my-api --env cluster1
cortex delete my-api --env cluster1

cortex deploy --env cluster2
cortex logs my-api --env cluster2
cortex delete my-api --env cluster2
```

## Configure `cortex` CLI to connect to an existing cluster

If you are installing the `cortex` CLI on a new machine, you can configure it to access an existing Cortex cluster.

On the machine which already has the CLI configured, run:

```bash
cortex env list
```

Take note of the environment name and operator endpoint of the desired environment.

On your new machine, run:

```bash
cortex env configure
```