Virtual Machines As Cluster Resources - Novell OPEN ENTERPRISE SERVER 2 SP 2 - CLUSTER SERVICES 1.8.7 FOR LINUX Manual

For information about why this configuration is necessary, see
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)
(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 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
running on the virtual machine (VM) host server.
Figure 12-1
Virtual Machine
Cluster Resource
OES Linux
Host (Xen)
NCS
Cluster Node
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
182 OES 2 SP2: Novell Cluster Services 1.8.7 for Linux Administration Guide
depicts how this setup might look. Novell Cluster Services (NCS) is installed and
Virtual Machines as Cluster Resources
Cluster Resource
Server 1
Cluster Node
®
virtual machines on each cluster node and configure those
Virtual Machine
Server 2
OES Linux
Host (Xen)
NCS
Fibre Channel Switch
"TID 7004595: Novell Cluster
on Novell Support
Virtual Machine
Cluster Resource
Server 3
OES Linux
Host (Xen)
NCS
Cluster Node
Shared Disk
System