HP Serviceguard for Linux Version A.11.16 Release Notes, Third Edition, August 2006

Serviceguard for Linux Version A.11.16 Release Notes
Compatibility Information and Installation Requirements
Chapter 1 37
Example of Rolling Upgrade
While you are performing a rolling upgrade warning messages may
appear while the node is determining what version of software is
running. This is a normal occurrence and not a cause for concern.
The following example shows a simple rolling upgrade on two nodes
running one package each, as shown in Figure 1-1.
NOTE This and the following figures show the starting point of the upgrade as
Serviceguard A.11.14.02 and Red Hat AS 2.1, and a roll to Serviceguard
A.11.15.02 and Red Hat EL3. This is for illustration only. For your
systems, substitute the actual release numbers of your rolling upgrade
path.
Figure 1-1 Running Cluster Before Rolling Upgrade
Step 1. Record all data as specified in the preparation section.
Halt the first node, as follows
# cmhaltnode -f node1
Node1 Node2
Pkg1 Pkg2
SG
A 11.14.02
Red Hat
AS 2.1
SG
A.11.14.02
Red Hat
AS 2.1