Installation guide

the original start fails, the service behaves as though a relocate operation was requested (see
below). If the operation succeeds, the service is placed in the started state.
disable — stop the service and place into the disabled state. This is the only permissible
operation when a service is in the failed state.
relocate — move the service to another node. Optionally, the administrator may specify a preferred
node to receive the service, but the inability for the service to run on that host (e.g. if the service
fails to start or the host is offline) does not prevent relocation, and another node is chosen.
Rgmanager attempts to start the service on every permissible node in the cluster. If no permissible
target node in the cluster successfully starts the service, the relocation fails and the service is
attempted to be restarted on the original owner. If the original owner can not restart the service, the
service is placed in the stopped state.
stop — stop the service and place into the stopped state.
migrate — migrate the virtual machine to another node. The administrator 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.
3.4.1 .1 . T he freeze Ope rat io n
RGManager can freeze services. Doing so allows users to upgrade rgmanager, CMAN, or any other
software on the system while minimizing down-time of rgmanager-managed services.
It also allows maintenance of parts of rgmanager services. For example, if you have a database and
a web server in a single rgmanager service, you may freeze the rgmanager service, stop the
database, perform maintenance, restart the database, and unfreeze the service.
3.4 .1.1.1. Service Beh avio rs wh en Fro z en
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.
3.4 .2. Service St at es
The following list defines the states of services managed by RGManager.
disabled — The service will remain in the disabled state until either an administrator re-enables
the service or the cluster loses quorum (at which point, the autostart parameter is evaluated). An
administrator may enable the service from this state.
⁠Chapt er 3. RG Manager
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