Environment commands

The following table describes environment management commands available in the Fuel CLI.

**Environment commands**
Description	Command	Example
View the list of environments.	`fuel env`
Create an environment.	`fuel env create --name <ENV_NAME> --rel <RELEASE_NUMBER>`	By default, Fuel creates an OpenStack environment in the `multinode` mode, and the `nova` network mode. To specify other modes, you can add optional arguments: `fuel env create --name <ENV_NAME> --rel <RELEASE_NUMBER> \ --mode ha --network-mode neutron --net-segment-type vlan` Use the `set` action to change the name, mode, or network mode for an OpenStack environment: `fuel --env <ENV_ID> env set --name <NEW_ENV_NAME> --mode ha_compact`
Delete an OpenStack environment.	`fuel --env <ENV_ID> env delete`
Update the OpenStack environment to a newer version. To roll back a failed update, use the same command with the previous release number.	`fuel env --update --env <ENV_ID> --rel <RELEASE_NUMBER>`