Cluster Health Monitor (CHM)
- CHM stores O/S metrics in the CHM repository that can be used for troubleshooting cluster issues.
- CHM consists of the following services:
- osysmond: System Monitor Service, one per node
- ologgerd: Cluster Logger Service, one primary and one standby per cluster
- If the master cluster logger service fails, the node where the standby resides:
- Takes over as master
- Selects a new node for standby
- The repository resides within the Grid Infrastructure home and requires 1 GB of disk space per node.
- The CHM repository is managed using the oclumon utility.
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