Proxmox Cluster Questions.

[salva_alc]

Hey,

Maybe you can help me with some questions.

I would like to set up a Proxmox Cluster in Hetzner (2 nodes + Proxmox backup (which will act as a Quorum for the cluster)).

Setup:
- The 2 nodes will be in the same datacenter and the backup will be in different datacenter (we can live for a while if the entire datacenter goes down)
- Local ZFS (raid) for all of them
- vSwitch for internal cluster + backup communication

I want to use the cluster so if a node goes down, services are migrated and reachable to the other node without touching anything. (manual DNS change is a possibility but I would like to avoid that)
Ideas?

Thanks in advance!

 

[oguz]

hi,

have you read the documentation about high availability? [0]

also take a look at this [1]. you could use the backup server as qdevice.

hope this helps!

[0]: https://pve.proxmox.com/wiki/High_Availability
[1]: https://pve.proxmox.com/pve-docs/chapter-pvecm.html#_corosync_external_vote_support

 

[salva_alc]

Thanks for your quick reply.
I already read the documentation but it does not solve this problem:
1) Imagine that I have container that runs web.example.com
2) proxmox cluster node goes down and the container starts in second node
3) web.example.com is not reachable but it's working

I would like to have all containers reachable at any time in any node.

 

[oguz]

Thanks for your quick reply.
I already read the documentation but it does not solve this problem:
1) Imagine that I have container that runs web.example.com
2) proxmox cluster node goes down and the container starts in second node
3) web.example.com is not reachable but it's working

I would like to have all containers reachable at any time in any node.

you can have multiple A records for the same FQDN, or use a reverse proxy / load balancer kind of setup