Continuent provides multiple methods out of the box to monitor the cluster health. It integrates with monitoring and alerting tools like Nagios/NRPE, Zabbix, and Pagerduty. This blog post shows you the thinking behind each included Tungsten Cluster monitoring tool, and when to use which tool.
Monitoring Made Easy: Watching Your Tungsten Cluster Using Built-In Tools
Cluster Management, Monitoring and Observability