As a GKE cluster admin with clusters on a release channel, you must be notified about relevant cluster events like available upgrades and security bulletins. What should you do?

Configuring GKE cluster notifications to publish to a Pub/Sub topic is the recommended and most effective way to receive timely alerts about cluster events, including available upgrades and security bulletins. This allows for programmatic consumption of notifications and integration with other systems (e.g., ticketing, alerting). Running scheduled queries against the googlecloudreleasenotes BigQuery dataset provides historical release information, not real-time cluster-specific notifications. Querying the GKE API for available versions would require continuous polling and doesn't provide security bulletin information. Subscribing to an RSS feed is a manual, less reliable, and less automated method for critical operational alerts compared to Pub/Sub.