A cluster resource monitor script is automatically generated for the pool when you cluster-enable it. It is disabled by default. To enable or disable monitoring, see Section 10.7.2, Configuring Resource Monitoring.
If you modify the monitor script, you must take the pool cluster resource offline, then bring it online for the changes to take effect.
The following sample values are used in the NSS monitor script below:
|
Variable |
Sample Value |
|---|---|
|
Cluster resource’s virtual server name |
NCS1-SHPOOL43-SERVER |
|
Resource IP address |
10.10.10.43 |
|
Pool name |
SHPOOL43 |
|
Volume name |
SHVOL43 |
|
Volume ID |
252 (valid values are 0 to 254) |
The following is a sample monitor script for an NSS pool cluster resource:
#!/bin/bash . /opt/novell/ncs/lib/ncsfuncs exit_on_error status_fs /dev/pool/POOL1 /opt/novell/nss/mnt/.pools/POOL1 nsspool exit_on_error ncpcon volume VOL1 exit_on_error status_secondary_ipaddress 10.10.10.41 exit 0
You can add lines to the monitor script that check the status of processes used by clustering. See Section 10.7.3, Monitoring Services that Are Critical to a Resource.
If OES CIFS is enabled as an advertising protocol for the pool, the OES CIFS monitoring command is automatically added to help keep CIFS up and running.
exit_on_error rcnovell-cifs monitor
The command checks to see if the cifsd daemon is running and takes action if it is not running. If CIFS is running, it returns its status. If CIFS is dead or not running, it starts the cifsd daemon and returns its status. If the restart fails, the resource’s failover settings are invoked, such as failing over the resource to its preferred node, or going comatose.
Pool cluster resources that were created on OES 2 SP3 and earlier clusters might use the CIFS status command in the monitor script. It checks the status and immediately invokes the resource’s failover settings if the cifsd daemon is not running. To take advantage of the restart capability that is offered by the monitor command, you can modify the line to use “monitor” instead of “status”.