Red Hat CLUSTER FOR ENTERPRISE LINUX 5.0, Руководство по настройке

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Appendix C. Upgrading A Red Hat
Cluster from RHEL 4 to RHEL 5
This appendix provides a procedure for upgrading a Red Hat cluster from RHEL 4 to RHEL 5.
The procedure includes changes required for Red Hat GFS and CLVM, also. For more
information about Red Hat GFS, refer to Global File System: Configuration and Administration.
For more information about LVM for clusters, refer to LVM Administrator's Guide: Configuration
and Administration.
Upgrading a Red Hat Cluster from RHEL 4 to RHEL 5 consists of stopping the cluster,
converting the configuration from a GULM cluster to a CMAN cluster (only for clusters
configured with the GULM cluster manager/lock manager), adding node IDs, and updating
RHEL and cluster software. To upgrade a Red Hat Cluster from RHEL 4 to RHEL 5, follow
these steps:
1. Stop client access to cluster high-availability services.
2. At each cluster node, stop the cluster software as follows:
a. Stop all high-availability services.
b. Run
service rgmanager stop
.
c. Run
service gfs stop
, if you are using Red Hat GFS.
d. Run
service clvmd stop
, if CLVM has been used to create clustered volumes.
Note
If
clvmd
is already stopped, an error message is displayed:
# service clvmd stop
Stopping clvm: [FAILED]
The error message is the expected result when running
service clvmd stop
after
clvmd
has stopped.
e. Depending on the type of cluster manager (either CMAN or GULM), run the following
command or commands:
• CMAN — Run
service fenced stop; service cman stop
.
• GULM — Run
service lock_gulmd stop
.
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