remote proxmox as a failover?

[benoitc]

I would like to make my system more resilient and I wonder if it's possible to have instances of proxmox replicated between 2 nodes in different network: one on the lan, the other somewhere else on the net. Should I create a standalone cluster? What are the good practices for it?

 

[aaron]

If you use ZFS as storage for the VMs you could use pve-zsync to send periodic snapshots of the VMs disk to the remote server.
You would need to manually copy the VM configs to the remote server (/etc/pve/qemu-config, /etc/pve/lxc for containers). In case the one node fails you can do a manual recovery on the remote node.

 

[benoitc]

@aaron interresting. Though it quill requires some action to put it back. Is there a way to replicate it to another remote node so it can be used immediately?

 

[aaron]

If they form a cluster. But that comes with other things to consider when the nodes are physically apart.

• latency
• network congestion if only one network or network has to go through router/firewall
• quorum (if 2 nodes -> see QDevice)

The mechanism you could use there would be the replication. It needs a ZFS based storage as well.