Using Serviceguard Extension for RAC, 5th Edition, June 2007

Software Upgrades
Rolling Software Upgrades
Appendix A 243
Example of Rolling Upgrade
The following example shows a simple rolling upgrade on two nodes,
each running standard Serviceguard and RAC instance packages, as
shown in Figure A-1. (This and the following figures show the starting
point of the upgrade as SGeRAC A.11.15 for illustration only. A roll to
SGeRAC version A.11.16 is shown.)
SGeRAC rolling upgrade requires the same operating system version on
all nodes. The example assumes all nodes are running HP-UX 11i v2. For
your systems, substitute the actual release numbers of your rolling
upgrade path.
NOTE 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.
Figure A-1 Running Cluster Before Rolling Upgrade