stonith / fencing for guest VMs

[xtavras]

Hi guys,

we are running few pacemaker cluster setups in our VMs (KVM), the problem is, sometimes resource migration doesn't work if a node is in undefined state, stonith (kill the VM) could resolve this problem, unfortunately I can't find any info if it possible with Proxmox. I know pacemaker's stonith works fine with libvirt, but Proxmox doesn't use it, so is there maybe another ways to achieve that?

Best,
Stan

 

[LnxBil]

Hi Stan,

Have a look at fence_pve, maybe it's exactly what you're looking for. I used it to fence my virtual test proxmox cluster inside my proxmox cluster.

Best,
LnxBil

 

[t.lamprecht]

Hello.

If you have your own Pacemacer cluster on top of PVE then PVE's HA stack doens't matter for that purpose. You sure can use pacemakers stonith fencing, best would be to set up the pve fence agent it can fence vm's in a PVE cluster.

Although the current fence_pve agent may be broken, we corrected and pushed to upstream only a few days ago (look here). (Older versions of the fence agents are fine). But I can help you to fix the agent if needed, it's not much to do.

 

[xtavras]

Thank you LnxBil and t.lamprecht, this is exactly what I was looking for!

 

[AlBayrouni]

@LnxBil @t.lamprecht
Is this agent still valid until today ?
Can you please check my post and suggest some help : https://forum.proxmox.com/threads/pacemaker-between-two-virtual-machines-under-proxmox.120551/