[PVE-User] Proxmox servers don't see each other anymore

[Gerald Brandt]

On 2017-06-20 06:30 AM, Barry Flanagan wrote:
> Hi Dmitry
> Regarding "enable it on your servers" - is it safe to enable this on all
> servers in the cluster, or must it only be on one? We recently suffered an
> issue on our network where multicast stopped working (an old switch was
> removed and obviously it was performing the querier function) and I had to
> change to unicast just to get things running again. I want to move back to
> multicast but don't want to rely on it being enabled on the switches as I
> do not control them.
>
> Thanks (and apologies for the slight thread hijack)
>
> -Barry Flanagan
>

I can temporarily fix the issue by going unicast? Are there instructions 
on how to do that? A quick search didn't bring anything up for me.

Gerald


>> 19.06.2017 18:07, Gerald Brandt пишет:
>>> I can still ping each server when there is an issue. Don't want to power
>> cycle the switches during the workday, but may have to.
>>> On 2017-06-19 09:57 AM, Gilberto Nunes wrote:
>>>> Probably some network trouble??
>>>> Did you check cables, swotch and so on??
>>>> When the problem appears, can you ping each server?
>>>>> My proxmox server intermittently don't see each other anymore. I keep
>>>>> losing quorum.
>>>>>
>>>>> I have 3 Proxmox servers, and they will randomly not see each other.
>> For a
>>>>> few seconds proxmox-2 will see proxmox-1, but not proxmox-3. Then it'll
>>>>> switch and proxmox-2 will only see proxmox-3, then it will see no one
>> but
>>>>> itself.
>>>>>
>>>>> I have the IP and names in /etc/hosts and in DNS.
>>>>>
>>>>> Any idea where I can start looking?
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