Corosync through vpn


Mar 31, 2019
Hello everyone,

I have two proxmox ve 6.2 servers, one in France and one in Germany.

I have setup a layer 2 vpn between the two sites (germany site beeing the server by itself [dedicated server hosting solution]).

The two servers can contact each other through the vpn lan on all ports.

I have read it is recomended to use the cluster feature only if you have a latency of around 2ms.

My latency is of 24ms wich is way too much compared to the recomended spec but I have read posts on forums that mention beeing able to make it work even with a lot of latency.

Also, logs on the server show :


Which is weird because infact servers should be able to reply to each other within 24ms.

I think I'm missing the point, could someone explain me what ?

Best regards.
I believe it is much more about that if you run an HA cluster, so that in the event of a node failure, the system responds immediately, because everything longer than 2ms could already scrap the VM on the central storage due to incorrect data.

But maybe someone has a better explanation.
Yes what you are explaning make sense.
Since I do not want to use the HA feature it should be working for my needs though..


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!