5.1. Monitoring General Cluster Parameters¶
By monitoring general parameters, you can get detailed information about all components of a Virtuozzo Storage cluster, its overall status and health. To display this information, use the
vstorage -c <cluster_name> top command, for example:
The command above shows detailed information about the
stor1 cluster. The general parameters (highlighted in red) are explained in the table below.
Overall status of the cluster:
Amount of disk space in the cluster:
For more information on monitoring and understanding disk space usage in clusters, see Understanding Disk Space Usage.
|MDS nodes||Number of active MDS servers as compared to the total number of MDS servers configured for the cluster.|
|epoch time||Time elapsed since the MDS master server election.|
Number of active chunk servers as compared to the total number of chunk servers configured for the cluster.
The information in parentheses informs you of the number of
|License||Key number under which the license is registered on the Key Authentication server and license state.|
|Replication||Replication settings. The normal number of chunk replicas and the limit after which a chunk gets blocked until recovered.|
Disks IO activity in the cluster: