[PVE-User] PRoxmox and ceph with just 3 server.

Ronny Aasen ronny+pve-user at aasen.cx
Thu Aug 30 23:16:20 CEST 2018


if HA is important, you should consider having a 4th ceph osd server 
(does not have to also be proxmox)

with ceph's default of 3 replicas, that you will want to use in  a 
production setup, you do not have any failure domain.
IOW the loss of any one node = a degraded ceph cluster.  if you have an 
additional node, ceph will rebalance and return to HEALTH_OK on the 
failure of a node.

with vm's iops are important so you must keep latency to a minimum.

both of these are explained a bit more in detail in the link he posted.


kind regards
Ronny Aasen


On 30.08.2018 20:46, Gilberto Nunes wrote:
> Hi Martin.
>
> Not really worried about highest performance, but to know if it will work
> properly, mainly HA!
> I plan work with mesh network too.
>
> Tanks a lot
>
> ---
> Gilberto Nunes Ferreira
>
> (47) 3025-5907
> (47) 99676-7530 - Whatsapp / Telegram
>
> Skype: gilberto.nunes36
>
>
>
>
> 2018-08-30 15:40 GMT-03:00 Martin Maurer <martin at proxmox.com>:
>
>> Hello,
>>
>> Not really. Please read in detail the following:
>>
>> https://forum.proxmox.com/threads/proxmox-ve-ceph-benchmark-2018-02.41761/
>>
>>
>> On 30.08.2018 16:47, Gilberto Nunes wrote:
>>
>>> Hi there
>>>
>>> It's possible create a scenario with 3 PowerEdge r540, with Proxmox and
>>> Ceph.
>>> The server has this configuration:
>>>
>>> 32 GB memory
>>> SAS 2x 300 GB
>>> SSD 1x 480 GB
>>>
>>> 2 VM with SQL and Windows server.
>>>
>>> Thanks
>>>
>>> ---
>>> Gilberto Nunes Ferreira
>>>
>>> (47) 3025-5907
>>> (47) 99676-7530 - Whatsapp / Telegram
>>>
>>> Skype: gilberto.nunes36
>>> _______________________________________________
>>> pve-user mailing list
>>> pve-user at pve.proxmox.com
>>> https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
>>>
>>>
>> --
>> Best Regards,
>>
>> Martin Maurer
>>
>> martin at proxmox.com
>> http://www.proxmox.com
>>
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