Quorum

[SamTzu]

I was debugging quorum/cman problems again when I noticed that on the cluster only the hosts that have 1 NIC are shown green.
All the rest of the hosts that have 2 NIC's are shown red.

I tested multicast and unicast with ssmping according to this article and both are working between the hosts.

I'm thinking this is significant.
I don't believe this is a multicast problem.
I believe that the cman/corsync is trying to contact the other hosts using the wrong NIC and that is why the result is cpg_send_message failed: 9.
What is the method of acquiring quorum? What NIC's are used and in what order?
Is there a way to prevent corosync using multiple NIC's?
Can it be forced to use only the first NIC?

 

[tom]

the cluster communication using the network specified in /etc/hosts

example:

root@proxmox-7-106:~# cat /etc/hosts

127.0.0.1 localhost.localdomain localhost
192.168.7.106 proxmox-7-106.maurer-it.com proxmox-7-106 pvelocalhost

here it uses the 192.168.7.106 ip for cluster communication.