Re: [PVE-User] Backup/timeout issues PVE 6.4

Re: [PVE-User] Backup/timeout issues PVE 6.4

[Сергей Цаболов]

The Synology path mount over NFS is shared on 3 nodes ?

19.04.2022 17:46, Eneko Lacunza via pve-user пишет:
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From: Eneko Lacunza <elacunza@binovo.es>
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Hi,

El 15/4/22 a las 18:04, Michael Rasmussen via pve-user escribió:
>> For the last 10 years I have been using Proxmox I have not have a lost
>> connection to a server for over 1 sec without it being intentionally
>> but if your circumstances is another usecase I would go for stackable
>> switches I have a port for either switch connected to my servers and
>> UPS control for all my servers.
>>
>> Loosing connection to a server for more than 1 sec can only mean
>> hardware failure or loss of power.
>>
> Forgot to mention that all my infrastructure and hardware is UPS
> controlled so only planned downtime has been when replacing UPS/battery
> in UPS (3 times) and one time when there was a longer period without
> power from the power grid (1 time and not planned ;-).
>
Unfortunately, starting with PVE 7.x we're seeing cluster issues (nodes 
going out of quorum only to rejoin instantly) "too often".

This is why we create multiple links for corosync after upgrading 
clusters to v7, so that one of these point-in-time issues with network 
doesn't reboot a node.

So far it has worked well. Unfortunately, we haven't been able to find a 
common pattern/cause in several clusters we see the issue.

Cheers

Eneko Lacunza
Zuzendari teknikoa | Director técnico
Binovo IT Human Project

Tel. +34 943 569 206 |https://www.binovo.es
Astigarragako Bidea, 2 - 2º izda. Oficina 10-11, 20180 Oiartzun

https://www.youtube.com/user/CANALBINOVO
https://www.linkedin.com/company/37269706/

Re: [PVE-User] Backup/timeout issues PVE 6.4

[Сергей Цаболов]

I have the same case with backup.

7 Nodes mount the same NFS path on Synology (folder)

But? I make the In backup settings some groups (every group is node 
1,2,3 etc and is VM) and set the time backups on groups, not the same time.

And the Mode of backup is Compression is ZSTD, Snapshot.

See screenshot.


19.04.2022 18:07, Eneko Lacunza пишет:
>
> Yes, all nodes mount the same NFS export.
>
> El 19/4/22 a las 16:52, Сергей Цаболов escribió:
>>
>> The Synology path mount over NFS is shared on 3 nodes ?
>>
>> 19.04.2022 17:46, Eneko Lacunza via pve-user пишет:
>>> _______________________________________________
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>>> pve-user@lists.proxmox.com
>>> https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>
Sergey TS
The best Regard
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From: Eneko Lacunza <elacunza@binovo.es>
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Hi Michael,

El 19/4/22 a las 17:23, Michael Rasmussen via pve-user escribió:
>> So far it has worked well. Unfortunately, we haven't been able to
>> find a common pattern/cause in several clusters we see the issue.
>>
> If your corosync network is very busy and/or you have not configured
> several connections on corosync between your nodes you can try to
> increase the token value. Find the section called totem and change the
> value for token - default i 1000 (ms). I have changed the value to 5000
> I have not experienced issues since.

Thanks, didn't know this, will try it!

Regards

Eneko Lacunza
Zuzendari teknikoa | Director técnico
Binovo IT Human Project

Tel. +34 943 569 206 |https://www.binovo.es
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