5.2. Monitoring Metadata Servers¶
MDS servers are a critical component of any Virtuozzo Storage cluster, and monitoring the health and state of MDS servers is a very critical task. To monitor MDS servers, use the vstorage -c <cluster_name> top command, for example:
The command above shows detailed information about the stor1 cluster. The monitoring parameters for MDS servers (highlighted in red) are explained in the table below:
Parameter |
Description |
|---|---|
MDSID |
MDS server identifier (ID). The letter “M” before ID, if present, means that the given server is the master MDS server. |
STATUS |
MDS server status. |
%CTIME |
Total time the MDS server spent writing to the local journal. |
COMMITS |
Local journal commit rate. |
%CPU |
MDS server activity time. |
MEM |
Amount of physical memory the MDS server uses. |
UPTIME |
Time elapsed since the last MDS server start. |
HOST |
MDS server hostname or IP address. |