Recommendations on what to monitor on clusters.
Cloudera recommends that administrators continuously monitor the following on a cluster:
- Replication Status
- Monitor replication status using Cloudera Manager Health Tests. Cloudera Manager
automatically and continuously monitors both the
OfflineReplicaCountmetrics. Alters are raised when failures are detected.
- Disk Capacity
- Monitor free space on mounted disks and open file descriptors. Reassign partitions or
move log files around if necessary. For more information, see the