Upgrading A Red Hat Cluster From Rhel 4 To Rhel 5 - Red Hat Cluster for Enterprise Linux 5 Configuration

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 informa-
tion 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, convert-
ing 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
d. Run
service clvmd stop
e. Depending on the type of cluster manager (either CMAN or GULM), run the following
command or commands:
• CMAN — Run
• GULM — Run
f. Run
service ccsd stop
.
.
.
Note
If is already stopped, an error message is displayed:
clvmd
# service clvmd stop
Stopping clvm:
The error message is the expected result when running
after has stopped.
stop clvmd
service fenced stop; service cman stop
service lock_gulmd stop
.
.
74
[FAILED]
service clvmd
.