HP-UX HB v13.00 Ch-15 - Serviceguard

HP-UX Handbook – Rev 13.00 Page 7 (of 108)
Chapter 15 Serviceguard
October 29, 2013
Figure 1: Robust Cluster Configuration
Figure 1 also illustrates the concept of active/active cluster. Each system is a primary node for
one or more Serviceguard packages and adoptive node for the other node’s packages in the
event of a node or site failure. Active/Active environments distribute the solution load. If
possible, half of the cluster should reside at a different site to avoid outages due to localized
failures. It is possible to create a cluster without packages.
Clusters are created, managed and deleted using cmquerystg, cmpreparestg, cmpreparecl,
cmdeploycl, cmquerycl, cmcheckconf, cmapplyconf, cmdeleteconf, cmgetconf, cmhaltcl,
cmhaltnode, cmmodnet, cmruncl, cmrunnode, cmversion, cmviewcl and cmviewconf.
Node2
node1
SAN
Switch
1
Storage Array 1
SAN
Switch
2
USERS
Network
switch
1
Network
switch
2
pkgA
pkgB
pkgA IP
pkgB IP
pkgA
data
pkgB
data
UPS POWER
Redundant
connections
Redundant connections
pkgA
data
pkgB
mirror
Storage Array 2
pkgA
mirror
pkgB
data
Boot &
AppA
AppB
Boot &
AppA
AppB
UPS POWER