Red Hat Enterprise Virtualization (RHEV) is a server virtualization solution that uses a KVM hypervisor. As KVM forms a core part of the Linux kernel, this virtualization is highly efficient in Linux environments. Platform management infrastructure and application-specific agents, and other tools are the other components of a RHEV setup.
To enable VCS support for in-guest clustering, before you install VCS on the guest virtual machines, you must set up a private network between them. This involves the following steps:
Add the two NICs to the virtual machine for private communication
Attach a switch to each of the two additional NICs
To create a network on the physical host
To configure a logical network for virtual machines
To set up a cluster of virtual (guest) machines with Cluster Server (VCS), perform the following procedures:
Consult the requirements in:
Veritas InfoScale Release Notes
Install InfoScale Availability product on the guest virtual machine. VCS is bundled with the InfoScale Availability product:
Veritas InfoScale Installation Guide
Configure VCS in the guest virtual machine
Cluster Server Configuration and Upgrade Guide
VCS supports SCSI3, non-SCSI3, CP server-based fencing in virtual machines to prevent corruption of data disks.
For information on configuring fencing, see the Cluster Server Configuration and Upgrade Guide.
VCS in-guest clustering continues to provide high availability of applications on virtual machines, in live migration scenarios initiated by the virtualization technology.
Veritas has tested for live migration support in the RHEV environment under the following conditions: