Installation guide

Mig rat e Migrate a virtual machine to another
node. You must specify a target node.
Depending on the failure, a failure to
migrate may result with the virtual
machine in the failed state or in the started
state on the original owner.
cl usvcad m -M
<servi ce_name> -m <member>
Important
For the migrate operation, you
must specify a target node using
the -m <member> option.
Rest art Restart a service on the node where it is
currently running.
cl usvcad m -R
<servi ce_name>
Service
O p erat io n
Descrip t io n Co mman d Syn t ax
Considerations for Using the Freeze and Unfreeze Operations
Using the freeze operation allows maintenance of parts of rg manag er services. For example, if you
have a database and a web server in one rg manag er service, you may freeze the rg manag er
service, stop the database, perform maintenance, restart the database, and unfreeze the service.
When a service is frozen, it behaves as follows:
Status checks are disabled.
Start operations are disabled.
Stop operations are disabled.
Failover will not occur (even if you power off the service owner).
Important
Failure to follow these guidelines may result in resources being allocated on multiple hosts:
You must not stop all instances of rgmanager when a service is frozen unless you plan to
reboot the hosts prior to restarting rgmanager.
You must not unfreeze a service until the reported owner of the service rejoins the cluster
and restarts rgmanager.
8.4 . Updat ing a Configurat ion
Updating the cluster configuration consists of editing the cluster configuration file
(/etc/cl uster/cluster. co nf) and propagating it to each node in the cluster. You can update
the configuration using either of the following procedures:
Section 8.4.1, “ Updating a Configuration Using cman_to o l versi o n -r”
Section 8.4.2, “ Updating a Configuration Using scp”
Con siderat ion s for Using t he Freeze an d Unfreeze Operat ions
14 5