Using Feature Flags
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This topic describes how VMware Tanzu Application Service for VMs (TAS for VMs) admins can set feature flags using the Cloud Foundry Command Line Interface (cf CLI) to enable or disable the features available to users.
To perform the following procedures, you must be logged in to your deployment as an admin using the cf CLI.
To view and edit feature flags:
cf feature-flagscommand to list the feature flags:
$ cf feature-flags Features State user_org_creation disabled private_domain_creation enabled app_bits_upload enabled app_scaling enabled route_creation enabled service_instance_creation enabled diego_docker disabled set_roles_by_username enabled unset_roles_by_username enabled task_creation enabled env_var_visibility enabled space_scoped_private_broker_creation enabled space_developer_env_var_visibility enabled service_instance_sharing disabled hide_marketplace_from_unauthenticated_users disabled resource_matching enabled
For descriptions of the features enabled by each feature flag, see Feature Flags.
To view the status of a feature flag, run:
cf feature-flag FEATURE-FLAG-NAME
FEATURE-FLAG-NAMEis the name of the feature flag you want to view.
To enable a feature flag, run:
cf enable-feature-flag FEATURE-FLAG-NAME
FEATURE-FLAG-NAMEis the name of the feature flag you want to enable.
To disable a feature flag, run:
cf disable-feature-flag FEATURE-FLAG-NAME
FEATURE-FLAG-NAMEis the name of the feature flag you want to disable.
Only admins can set feature flags. All flags are enabled by default except
diego_docker. When disabled, these features are only available to admins.
The following list provides descriptions of the features enabled or disabled by each flag, and the minimum Cloud Controller API (CC API) version necessary to use the feature. To determine your Cloud Controller API version, see Identifying the API Endpoint for Your TAS for VMs Instance.:
user_org_creation: Any user can create an org. If enabled, this flag activates the Create a New Org link in the dropdown of the left navigation menu in Apps Manager. Minimum CC API version: 2.12.
private_domain_creation: An Org Manager can create private domains for that org. Minimum CC API version: 2.12.
app_bits_upload: Space Developers can upload app bits. Minimum CC API version: 2.12.
app_scaling: Space Developers can perform scaling operations such as changing memory, disk, or instances. Minimum CC API version: 2.12.
route_creation: Space Developers can create routes in a space. Minimum CC API version: 2.12.
service_instance_creation: Space Developers can create service instances in a space. Minimum CC API version: 2.12.
diego_docker: Space Developers can push Docker apps. Minimum CC API version 2.33.
set_roles_by_username: Org Managers and Space Managers can add roles by username. Minimum CC API version: 2.37.
unset_roles_by_username: Org Managers and Space Managers can remove roles by username. Minimum CC API version: 2.37.
task_creation: Space Developers can create tasks on their app. Minimum CC API version: 2.47.
env_var_visibility: All users can view environment variables. Minimum CC API version: 2.58.
space_scoped_private_broker_creation: Space Developers can create space-scoped private service brokers. Minimum CC API version: 2.58.
space_developer_env_var_visibility: Space Developers can view their v2 environment variables. Org Managers and Space Managers can view their v3 environment variables. Minimum CC API version: 2.58.
service_instance_sharing: Space Developers can share service instances between two spaces (across orgs) in which they have the Space Developer role.
hide_marketplace_from_unauthenticated_users: Do not allow unauthenticated users to see the service offerings available in the marketplace.
resource_matching: Allow the package upload endpoint to cache uploaded packages for resource matching. When disabled, the resource match endpoint always returns an empty array of matches. Minimum CC API version: 3.77.
For more information about feature flag commands, see Feature Flags in the Cloud Foundry API documentation.
You can disable custom buildpacks using the TAS for VMs tile. In the App Containers pane, deselect the Enable custom buildpacks checkbox, as shown in the image below.
By default, the cf CLI gives developers the option of using a custom buildpack when they deploy apps to TAS for VMs. To do so, they use the
-b option to provide a custom buildpack URL with the
cf push command. Deselecting the Enable custom buildpacks checkbox prevents the
-b option from being used with external buildpack URLs.
For more information about custom buildpacks, see Buildpacks.