Possible values for 'channel'.

UNSPECIFIED No channel specified.

RAPID channel is offered on an early access basis for customers who want to test new releases.

WARNING: Versions available in the RAPID Channel may be subject to unresolved issues with no known workaround and are not subject to any SLAs.

REGULAR Clusters subscribed to REGULAR receive versions that are considered GA quality. REGULAR is intended for production users who want to take advantage of new features.
STABLE Clusters subscribed to STABLE receive versions that are known to be stable and reliable in production.