HP Serviceguard for Linux Version A.11.19 Release Notes, April 2009

NOTE: Make sure that all your network and storage interfaces are supported by
the new OS.
3. Record the storage configuration, such as all LVM information, and if possible,
collect a list of hardware disks configured, for example sfdisk -l
On SUSE Linux Enterprise Server, you may need to run YAST or YAST2.
4. Back up the following files on media that can be easily recovered by the node after
its upgrade or a new OS installation:
• Host files: /root/.rhosts, /etc/hosts, /etc/profile,and the network
information (including the bonding configurations):
— Red Hat: /etc/sysconfig/network-scripts/ifcfg*
— SUSE: /etc/sysconfig/network/ifcfg*
• SG files:$SGCONF/*: all current package control and configuration files, including
their log files.
Procedure — Performing the Rolling Upgrade
NOTE: Warning messages may appear during rolling upgrade while a node is
determining what version of software is running. This is a normal occurrence and not
a cause for concern.
1. Halt the node you want to upgrade. This will cause the node's packages to start
up on an adoptive node. In Serviceguard Manager, select the node; from the Actions
menu, choose Administering Serviceguard, Halt node. Or, on the Serviceguard
command line, issue the cmhaltnode command.
2. Edit the /usr/local/cmcluster/conf/cmcluster.rc file (on SUSE, /opt/
cmcluster/conf/cmcluster.rc) to include the following line:
AUTOSTART_CMCLD = 0
If you need to upgrade only Serviceguard, and not the Linux OS, skip to step 6
below.
3. Upgrade the node to the new OS, or if necessary, do a complete installation with
a new OS.
4. After completing the OS upgrade or installation for the node, restore all its
previously saved Host files: /root/.rhosts, /etc/hosts, /etc/profile,
/etc/sysconfig/network/ifcfg*(or /etc/sysconfig/
network-scripts/ifcfg*) and bonding files.
Verify that the network configurations are the same prior to the upgrade or the
new installation. Check the current interface eth0 has the same corresponding
Mac address before and after.
Compatibility Information and Installation Requirements 53