[ClusterLabs] Fencing agent fence_xvm using multicast

[Pierre C. Dussault]

Hi all,

I am trying to get a working fencing device on a single Proxmox 8 host (not using the Proxmox tools) with fence_virtd and fence_virt/vxm. I can't get the command
    # fence_xvm -o list
to output anything, it keeps failing via timeout despite many attempts at finding the fault. The exact return message is:
    Timed out waiting for response
    Operation failed

I am trying to configure it using the multicast Listener with the Libvirt backend. All settings were left to defaults except the listening interface which was set to the Linux bridge connecting the host and the guests. The fence_xvm.key file was copied in the /etc/cluster/ directory on the host and on the guests.

I followed this: https://projects.clusterlabs.org/w/fencing/guest_fencing/ which didn't work,
then this: https://kevwells.com/it-knowledge-base/how-to-install-cluster-fencing-using-libvert-on-kvm-virtual-machines/ which also didn't work.

I read the man pages for fence_virt, fence_xvm, fence_virtd and fence_virt.conf.
I read the README and doc files in "agents/virt" and "agent/virt/docs" from the source repository.

I am at a loss here. Is there a better guide out there (or more up to date)?

Thanks.
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