Managing Serviceguard 13th Edition, February 2007

Software Upgrades
Example of a Rolling Upgrade
Appendix E 425
Example of a Rolling Upgrade
NOTE Warning messages may appear during a rolling upgrade 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 E-1. (This and the
following figures show the starting point of the upgrade as “SG (old)” and
“HP-UX (old)”, with a roll to “SG (new)” and “HP-UX (new)”. Substitute
the actual release numbers of your rolling upgrade path.)
Figure E-1 Running Cluster Before Rolling Upgrade
Step 1.
Halt the first node, as follows
# cmhaltnode -f node1