Cluster Alerts in X-Pack Monitoring for Elasticsearch was introduced to provide users with real-time alerts for common cluster issues by leveraging X-Pack alerting via Watcher. This feature periodically queries monitoring data to identify and alert users about critical issues, such as mismatched versions of Elasticsearch nodes or cluster status changes. Initially, four types of Watches were included, with plans to expand alerts to cover X-Pack license expiration, resource utilization, and node activity. Future improvements aim to offer customizable thresholds and integrations with various notification platforms like Slack and PagerDuty. Users can experiment with these capabilities using a trial license, ensuring they remain informed about their Elastic Stack's health even while on vacation.