182 OES 2 SP2: Novell Cluster Services 1.8.7 for Linux Administration Guidenovdocx (en) 7 January 2010For information about why this configuration is necessary, see “TID 7004595: Novell ClusterServices 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 ResourcesIn this scenario, you have an OES 2 Linux cluster configured on physical machines. OES 2 Linuxand Xen are installed and configured on each node along with Novell Cluster Services. This part ofthe Novell Cluster Services configuration does not differ from that of an OES 2 Linux clusterwithout virtualization.You then create either Linux or NetWare® virtual machines on each cluster node and configure thosevirtual machines to be cluster resources. You can then fail over or migrate virtual machine clusterresources (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 andrunning on the virtual machine (VM) host server.Figure 12-1 Virtual Machines as Cluster ResourcesThe following sections describe how to create a cluster resource and its cluster scripts for eachvirtual 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,” onpage 184 Section 12.2.3, “Setting Up Live Migration,” on page 189Fibre Channel SwitchServer 1Virtual MachineCluster ResourceServer 2 Server 3Shared DiskSystemOES LinuxHost (Xen)NCSCluster NodeOES LinuxHost (Xen)NCSCluster NodeOES LinuxHost (Xen)NCSCluster NodeVirtual MachineCluster ResourceVirtual MachineCluster Resource
