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

IMPORTANT: Do not delete this file.
New Cluster Manager
Serviceguard A.11.19 introduces a new cluster manager. In a running cluster, this affects
node timeout and failover and cluster re-formation, providing significant performance
improvements; see the discussion of MEMBER_TIMEOUT under “Cluster Configuration
Parameters” in the latest version of Managing Serviceguard for Linux for more information.
There is also a one-time effect on rolling upgrade to Serviceguard A.11.19.
Upgrade will trigger a cluster membership transition from the old to the new cluster
manager when the last node in the cluster has rolled to A.11.19. This transition can take
up to one second, during which time the old cluster manager will shut down and the
new cluster manager will start.
CAUTION: From the time when the old cluster manager is shut down until the new
cluster manager forms its first cluster, a node failure will cause the entire cluster to fail.
HP strongly recommends that you use no Serviceguard commands other than
cmviewcl (1m) until the new cluster manager successfully completes its first cluster
re-formation. See “Rolling Software Upgrades” (page 48) for more information.
Legacy Packages
In A.11.19, you can still create new packages using the legacy method (the method
used before Serviceguard A.11.18; see “Configuring a Legacy Package” in Chapter 7
of Managing Serviceguard for Linux). In some cases new capabilities provided in modular
packages (those created by the method introduced in A.11.18) have been added to
legacy packages as well.
Use the modular method to create new packages whenever possible. See Chapter 6 of
Managing Serviceguard for Linux for more information.
.rhosts Deprecated
Using the .rhosts file as a means of allowing root access to an unconfigured node is
deprecated as of Serviceguard A.11.19. You should use $SGCONF/cmclnodelist
instead. See “Allowing Root Access to an Unconfigured Node” in Chapter 5 of Managing
Serviceguard for Linux for more information.
cmviewconf Deprecated
cmviewconf is deprecated as of Serviceguard A.11.19. Use cmviewcl to obtain
information about the cluster. See “Reviewing Cluster and Package Status” in Chapter
7 of Managing Serviceguard for more information.
12 Serviceguard for Linux Version A.11.19 Release Notes