I lost the cluster communication again.
I have been using Proxmox since version 1, and this is the first time It
bothers me so much!
- All the 10 nodes have the same version
(pve-manager/5.2-9/4b30e8f9 (running kernel: 4.13.13-2-pve))
- All they have the same date / time (It is one of the causes It could
lose the communication)
- The environment is ident (No new switch, no new server)
And why all these nodes lost the communication at the same time ? If
they are 10 at least 5 have to be with problems to lost the quorum and
then the connection. Is it true?
I think it is something related to this proxmox version.
What to do ?
El 15/10/18 a las 12:46, Denis Morejon escribió:
Is multicast communication the main cause of cluster proxmox file
system problems ?
Why some times date and time have to be with cluster errors ?
Since my point of view cluster communication errors are the most
critical errors since affect all VMs keeping It from start again
because of not quorrum.
Are there any tips (or steps) to fix it or to avoid it ?
El 15/10/18 a las 03:57, Thomas Lamprecht escribió:
On 10/12/18 6:57 PM, Denis Morejon wrote:
The 10 nodes lost the communication with each other. And they were
working fine for a month. They all have version 5.1.
any environment changes? E.g., switch change or software update
(which then could block multicast)?
Can you also see if the omping test go still through:
https://pve.proxmox.com/pve-docs/chapter-pvecm.html#_cluster_network
All nodes have the same date/time and show a status like this:
root@proxmox11:~# pvecm status
Quorum information
------------------
Date: Fri Oct 12 11:55:59 2018
Quorum provider: corosync_votequorum
Nodes: 1
Node ID: 0x00000007
Ring ID: 7/60372
Quorate: No
Votequorum information
----------------------
Expected votes: 10
Highest expected: 10
Total votes: 1
Quorum: 6 Activity blocked
Flags:
Membership information
----------------------
Nodeid Votes Name
0x00000007 1 192.168.80.11 (local)
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