Monitoring system health by using the mmhealth command

Every service hosted on an IBM Spectrum Scale™ node has its own health monitoring service. All the sub-components like the filesystem or network interfaces are monitored through the monitoring service of their main component. Only the sub-components of CES service such as NFS, SMB, Object, and authentication have their own health monitors. The mmhealth command gets the health details from these monitoring services. The role of a node in monitoring determines the components that need to be monitored. This is an internal node role and a node can have more than one role. For example, a CES node can also be a node with file systems and performance monitoring. The role of the node also determines the monitoring service that is required on a specific node. For example, you do not need a CES monitoring on a non-CES node. The monitoring services are only started if a specific node role is assigned to the node. Every monitoring service includes at least one monitor.