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OES 2 SP2: Novell Cluster Services 1.8.7 for Linux Administration Guide
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For information about why this configuration is necessary, see
“TID 7004595: Novell Cluster
Services is unable to detect a network link down when installed on a Xen domain 0 (dom0)” (http://
www.novell.com/support/viewContent.do?externalId=7004595&sliceId=1)
on
Novell Support
(http://www.novell.com/support)
.
12.2 Virtual Machines as Cluster Resources
In this scenario, you have an OES 2 Linux cluster configured on physical machines. OES 2 Linux
and Xen are installed and configured on each node along with Novell Cluster Services. This part of
the Novell Cluster Services configuration does not differ from that of an OES 2 Linux cluster
without virtualization.
You then create either Linux or NetWare
®
virtual machines on each cluster node and configure those
virtual machines to be cluster resources. You can then fail over or migrate virtual machine cluster
resources (entire virtual machines) to different physical nodes in your cluster.
Figure 12-1
depicts how this setup might look. Novell Cluster Services (NCS) is installed and
running on the virtual machine (VM) host server.
Figure 12-1
Virtual Machines as Cluster Resources
The following sections describe how to create a cluster resource and its cluster scripts for each
virtual machine:
Section 12.2.1, “Creating a Xen Virtual Machine Cluster Resource,” on page 183
Section 12.2.2, “Configuring Virtual Machine Load, Unload, and Monitor Scripts,” on
page 184
Section 12.2.3, “Setting Up Live Migration,” on page 189
Fibre Channel Switch
Server 1
Virtual Machine
Cluster Resource
Server 2
Server 3
Shared Disk
System
OES Linux
Host (Xen)
NCS
Cluster Node
OES Linux
Host (Xen)
NCS
Cluster Node
OES Linux
Host (Xen)
NCS
Cluster Node
Virtual Machine
Cluster Resource
Virtual Machine
Cluster Resource