# Enabling/disabling specific features

You can customize the site.yml deployment using variables to control what features are enabled:

Variable	File	Description
`gke_admin_workstation` `.alt_vcenter.enable`	inventory/group_vars/all/all.yml	Set to `true` if you want to deploy your GKE Admin Workstation to a different vSphere infrastructure than that used for the admin and user clusters. Defaults to `false`
`create_admin_cluster`	inventory/group_vars/all/all.yml	Defaults to `true`
`create_user_cluster`	inventory/group_vars/all/all.yml	Defaults to `true`
`enable_config_check`	inventory/group_vars/all/all.yml	Flag for the `gkectl check-config` execution. It is recommended that you run these checks at least the first time. Defaults to `true`
`gkectl_run_prepare`	inventory/group_vars/all/all.yml	Defaults to `true`
`proxy_enabled`	inventory/group_vars/all/all.yml	Proxy configuration used for the Ansible controller, the admin workstation, and the admin and user clusters. Defaults to `false`
`private_docker_registry`	inventory/group_vars/all/all.yml	Private Docker registry for hosting GKE images. Defaults to `false`

A sample deployment specification is shown below:

cat enables.yml

---
proxy_enabled: false
private_docker_registry: false
enable_config_check: false
gkectl_run_prepare: false
create_admin_cluster: false
create_user_cluster: true

# Command

To use the deployment specification, use a command similar to the following:

cd ~/Anthos-on-SimpliVity

ansible-playbook site.yml --ask-vault-pass -e “@./enables.yml”

# gkectl flags

A number of variables are available to help customize the various gkectl commands:

Variable	File	Description
`gkectl_check_flags`	inventory/group_vars/all/all.yml	Flags for the `gkectl check-config` command Defaults to `'--fast'`
`gkectl_prepare_flags`	inventory/group_vars/all/all.yml	Flags for the `gkectl prepare` command Defaults to `'--skip-validation-all'`
`gkectl_create_flags`	inventory/group_vars/all/all.yml	Flags for the `gkectl create cluster` command Defaults to `'--skip-validation-all'`

More details on the options available for these flags are documented in the GKE on-prem reference documentation:

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