HA doesn't work in Proxmox 7

RubenV

New Member
Sep 20, 2021
1
0
1
24
Last week, i tried configuring an HA cluster with 3 computers. Everything went fine till i tested the system by pulling out one of the nodes. The VM switched over just fine but could not start. It returned me the following error:
1632120709666.png
After hours of trying different sollutions, i found a fix for the problem:

the map /var/lib/lxc/ doesn't contain directories for the CT/VM's not originating on the node you're looking at. The sollution for this problem is to copy the folders of the CT/VM's manualy from /var/lib/lxc/ to the other nodes which do not jet have them at the same location.

I hope this may help anyone struggeling with the same problem as i had. The problem is only present in the (first few) releases of Promxox 7. Another sollution to this problem is to use Proxmox 6 instead of 7.
 
Bonjour,
Sorry, I don't see any shared storage !!! To do H.A you need a shared storage like Ceph on each node of your data center or another shared storage like PBS, TRUENAS ... with the ISO or CT on it.
 

Attachments

  • H.A-PVE-Cluster.png
    H.A-PVE-Cluster.png
    250.5 KB · Views: 20
You need shared storage or local-storage with zfs async replication (Replikation-Feature in GUI). Also make sure that you dont have any local ressources connected to the vm (USB, GPUs, ISOs etc). otherwise HA wont work.
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!