The following sections provide the syntax of some custom constraints that you might find useful:

Description Constraint syntax
Do not disable node auto-upgrade for new node pools 

    name: organizations/ORGANIZATION_ID/customConstraints/custom.enableAutoUpgrade
    resourceTypes:
    - container.googleapis.com/NodePool
    methodTypes:
    - CREATE
    condition: "resource.management.autoUpgrade == true"
    actionType: ALLOW
    displayName: Enable node auto-upgrade
    description: All node pools must have node auto-upgrade enabled.
Enable workload identity federation for GKE for new clusters 

    name: organizations/ORGANIZATION_ID/customConstraints/custom.enableWorkloadIdentity
    resourceTypes:
    - container.googleapis.com/Cluster
    methodTypes:
    - CREATE
    condition: "has(resource.workloadIdentityConfig.workloadPool) || resource.workloadIdentityConfig.workloadPool.size() > 0"
    actionType: ALLOW
    displayName: Enable Workload Identity on new clusters
    description: All new clusters must use Workload Identity.
Do not disable Cloud Logging on existing clusters 

    name: organizations/ORGANIZATION_ID/customConstraints/custom.enableLogging
    resourceTypes:
    - container.googleapis.com/Cluster
    methodTypes:
    - UPDATE
    condition: "resource.loggingService == 'none'"
    actionType: DENY
    displayName: Do not disable Cloud Logging
    description: You cannot disable Cloud Logging on existing GKE cluster.
Only allow Standard node pool creation or update when legacy metadata endpoints are disabled 

    name: organizations/ORGANIZATION_ID/customConstraints/custom.nodeConfigMetadata
    resourceTypes:
    - container.googleapis.com/NodePool
    methodTypes:
    - CREATE
    - UPDATE
    condition: "'disable-legacy-endpoints' in resource.config.metadata && resource.config.metadata['disable-legacy-endpoints'] == 'true'"
    actionType: ALLOW
    displayName: Disable legacy metadata endpoints
    description: You can only create or update node pools if you disable legacy
    metadata endpoints.

This constraint sample shows you how to set a custom constraint on a map value. The condition field uses the index operator on the map key disable-legacy-endpoints. If you use regular field selection syntax instead, like in the preceding samples, you see a INVALID_CUSTOM_CONSTRAINT_CONDITION error.