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Dynamic Admission Controller RBAC Settings

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      The admission controller requires read-only access to several resource types in order to function.

      Required Permissions

      couchbase.com/couchbaseclusters
      couchbase.com/couchbasebuckets
      couchbase.com/couchbaseephemeralbuckets
      couchbase.com/couchbasememcachedbuckets
      couchbase.com/couchbasereplications
      couchbase.com/couchbaseusers
      couchbase.com/couchbasegroups
      couchbase.com/couchbaserolebindings
      couchbase.com/couchbasebackups
      couchbase.com/couchbasebackuprestores
      couchbase.com/couchbaseautoscalers
      couchbase.com/couchbasecollections
      couchbase.com/couchbasecollectiongroups
      couchbase.com/couchbasescopes
      couchbase.com/couchbasescopegroups
      couchbase.com/couchbasemigrationreplications

      Used by the DAC to collect resources associated with a CouchbaseCluster. The DAC ensures — when considered as a whole — the configuration is valid for the Couchbase cluster.

      Required Permissions: list

      Optional Permissions

      secrets

      Used by the DAC to look for secrets references in the CouchbaseCluster specification. It will ensure that the username and password secrets exist. It will ensure that, if specified, the TLS secrets are present and correct, and are valid for the cluster.

      You can opt out of this requirement with the --validate-secrets cao flag.

      Required Permissions: get

      storage.k8s.io/storageclasses

      Used by the DAC to look for storage class references in the CouchbaseCluster specification. It will ensure that, if present, any storage class templates reference existing storage classes.

      You can opt out of this requirement with the --validate-storage-classes cao flag.

      Required Permissions: get

      Secret and StorageClass resources are only interrogated — as described — for existence and correctness. The admission controller only performs get operations based on the names specified in the CouchbaseCluster specification. These resources will never be leaked through logs and are never persisted by the admission controller.

      If, however, your security policies declare that such permissions cannot be granted to an application, then they can be safely removed from the admission controller’s role. You will then no longer be informed about missing secrets and storage classes, incorrectly formatted secrets, and invalid TLS configurations.

      For further information on opting out of these checks, see the documentation for the cao generate admission command.