[PVE-User] I lost the cluster communication in a 10 nodes cluster
denis.morejon at etecsa.cu
Thu Oct 18 18:21:51 CEST 2018
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:
>>> All nodes have the same date/time and show a status like this:
>>> root at 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
>>> Membership information
>>> Nodeid Votes Name
>>> 0x00000007 1 192.168.80.11 (local)
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