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

Gilberto Nunes gilberto.nunes32 at gmail.com
Fri Aug 31 13:25:25 CEST 2018


That's was nice guys. Thank you for helping...

Em sex, 31 de ago de 2018 08:16, Yannis Milios <yannis.milios at gmail.com>
escreveu:

> This seems a good reading as well...
> https://ceph.com/geen-categorie/ceph-osd-reweight/
>
> On Fri, 31 Aug 2018 at 12:10, Eneko Lacunza <elacunza at binovo.es> wrote:
>
> > You can do so from CLI:
> >
> > ceph osd crush reweight osd.N
> >
> >
> >
> https://ceph.com/geen-categorie/difference-between-ceph-osd-reweight-and-ceph-osd-crush-reweight/
> >
> > El 31/08/18 a las 13:01, Gilberto Nunes escribió:
> > > Thanks a lot for all this advice guys.
> > > I still learn with Ceph.
> > > So I have a doubt regarding how to change the weight from certain hdd
> > > Is there some command to do that?
> > >
> > > Em sex, 31 de ago de 2018 05:58, Ronny Aasen <ronny+pve-user at aasen.cx>
> > > escreveu:
> > >
> > >> when adding a older machine to your cluster, keep in mind that the
> > >> slowest node with determine the overall speed of the ceph cluster
> (since
> > >> a vm's disk will be spread all over)
> > >>
> > >>
> > >> for RBD vm's you want low latency, so use things like
> > >> nvram > ssd > hdd  with osd latency significant difference here.
> > >>
> > >> 100Gb/25Gb > 40Gb/10Gb (1Gb is useless in this case imho)
> > >>
> > >> as long as you have enough cores, higher ghz is better then lower ghz.
> > >> due to lower latency
> > >>
> > >> kind regards.
> > >> Ronny Aasen
> > >>
> > >>
> > >>
> > >> On 31. aug. 2018 00:21, Gilberto Nunes wrote:
> > >>> An HPE Server will remain after deploy 3 servers with proxmox and
> ceph.
> > >>> I thing I will use this HPE server as 4th node!
> > >>>
> > >>>
> > >>> ---
> > >>> Gilberto Nunes Ferreira
> > >>>
> > >>> (47) 3025-5907
> > >>> (47) 99676-7530 - Whatsapp / Telegram
> > >>>
> > >>> Skype: gilberto.nunes36
> > >>>
> > >>>
> > >>>
> > >>>
> > >>> 2018-08-30 18:16 GMT-03:00 Ronny Aasen <ronny+pve-user at aasen.cx>:
> > >>>
> > >>>> 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
> > >>>>>>
> > >>>>>>
> ____________________________________________________________________
> > >>>>>> Proxmox Server Solutions GmbH
> > >>>>>> Bräuhausgasse 37, 1050 Vienna, Austria
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> > >>>>>> Registration office: Handelsgericht Wien
> > >>>>>>
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> >
> > --
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