2-node cluster with 4.1

[verboEse]

Hi.
I'm running into problems tring to do a fresh install of a 2-node cluster with the recent 4.1. My steps after the installation of both nodes are:

• on both nodes:
  • switching to no-subscription repository
  • apt-get update
  • apt-get dist-upgrade
• on first node (10.129.234.94):
  • pvecm create MyCluster
• on second node (10.2.173.173):
  • pvecm add 10.129.234.94

Adding the node hangs for a long time, then dropping an error:

Job for corosync.service failed. See 'systemctl status corosync.service' and 'journalctl -xn' for details.
waiting for quorum...

... and:

# systemctl status corosync.service
[...]
Mar 16 15:02:30 portugal corosync[2765]: [QUORUM] Quorum provider: corosync_votequorum failed to initialize.
Mar 16 15:02:30 portugal corosync[2765]: [SERV  ] Service engine 'corosync_quorum' failed to load for reason 'configuration error: nodelist or quorum.expected_votes ...onfigured!'
Mar 16 15:02:30 portugal corosync[2765]: [MAIN  ] Corosync Cluster Engine exiting with status 20 at service.c:356.
[...]

I know that HA isn't possible anymore with a two-node cluster, but according to the Wiki it should be possible to create a cluster at all.
Both nodes are able to resolve each other's name - be it FQDN or not. Reverse Lookup is not possible though. Could that be the problem?!

 

[MikeP]

A 2-node cluster is possible. I have 2-nodes in my test/demo/home/play cluster. Non-HA.
Both of mine are in the same subnet.
Can each node ping the other?

I have no idea if FQDN Reverse Lookup is required. I set up Reverse DNS right before I setup these 2 nodes, and I did the pvecm based on name.

 

[MikeP]

FYI, here's my cluster:

root@pve2:~# pvecm nodes
Membership information
----------------------
Nodeid Votes Name
1 1 pve1
2 1 pve2 (local)

 

[brucexx]

Have you checked you host file ? Did you by any chance change the ip address of the nodes before trying to form a cluster ?

See this post I had very similar problem:

https://forum.proxmox.com/threads/s...nfiguration-error-nodelist.26530/#post-133249