[PVE-User] Ceph server with Ubuntu

[Uwe Sauter]

I suppose that the client lib on Proxmox side has no problems talking to older releases *BUT* I'm no expert on that. It could also
require that certain settings on the server side are enabled or disabled.

Can someone from Proxmox comment on the described scenario?


Am 14.08.2017 um 15:10 schrieb Gilberto Nunes:
> I suppose the case B is more suitable to my case here...
> I just ask because Ceph version in Proxmox, seems to be Luminous and Ceph version for Ubuntu Xenial is Jewel... 
> So I ask if there is no incompatibility between this two versions... 
> 
> 
> 
> 
> 
> 2017-08-14 9:51 GMT-03:00 Uwe Sauter <uwe.sauter.de at gmail.com <mailto:uwe.sauter.de at gmail.com>>:
> 
>     Then the question is if
> 
>     a) you'd want to integrate those Ubuntu servers into an existing Ceph cluster (managed by Proxmox) or
> 
>     b) if you just want to use a separate Ceph cluster in your Proxmox setup where that Ceph cluster is based on your Ubuntu hosts.
> 
> 
>     Case a) is probably a bad idea due to (possibly) different Ceph versions between Proxmox and Ubuntu.
> 
>     Case b) should work without problem given the Ubuntu based Ceph cluster has the correct options configured. [1] and [2] should
>     help in that case. Unfortunatelly I cannot provide the correct options, I can only give you a dump of my PVE 4.4 based setup:
> 
>     # ceph osd pool ls detail
>     pool 0 'rbd' replicated size 3 min_size 2 crush_ruleset 0 object_hash rjenkins pg_num 64 pgp_num 64 last_change 1 flags hashpspool
>     stripe_width 0
>     pool 1 'vms' replicated size 3 min_size 2 crush_ruleset 0 object_hash rjenkins pg_num 256 pgp_num 256 last_change 1601 flags
>     hashpspool stripe_width 0
> 
>     # ceph status
>         cluster 982484e6-69bf-490c-9b3a-942a179e759b
>          health HEALTH_OK
>          monmap e4: 4 mons at {0=XXX.XXX.XXX.XXX:6789/0,1=XXX.XXX.XXX.XXX:6789/0,2=XXX.XXX.XXX.XXX:6789/0,3=XXX.XXX.XXX.XXX:6789/0}
>                 election epoch 742, quorum 0,1,2,3 0,1,2,3
>          osdmap e1650: 12 osds: 12 up, 12 in
>                 flags sortbitwise,require_jewel_osds
>           pgmap v9851050: 320 pgs, 2 pools, 371 GB data, 102 kobjects
>                 1196 GB used, 5028 GB / 6224 GB avail
>                      320 active+clean
>       client io 7729 B/s wr, 0 op/s rd, 0 op/s wr
> 
> 
> 
> 
>     [1] https://pve.proxmox.com/wiki/Ceph_Server#Ceph_Client <https://pve.proxmox.com/wiki/Ceph_Server#Ceph_Client>
>     [2] https://pve.proxmox.com/wiki/Storage:_RBD <https://pve.proxmox.com/wiki/Storage:_RBD>
> 
>     Am 14.08.2017 um 14:40 schrieb Gilberto Nunes:
>     > Hi
>     > Just because I already have a lot of Ubuntu Server here and I use it!
>     > Just wonder...
>     > Thanks anyway
>     >
>     > 2017-08-14 9:30 GMT-03:00 Uwe Sauter <uwe.sauter.de at gmail.com <mailto:uwe.sauter.de at gmail.com>
>     <mailto:uwe.sauter.de at gmail.com <mailto:uwe.sauter.de at gmail.com>>>:
>     >
>     >     Are there any reasons on your side to use Ubuntu? If you want to stay compatible you could also install Proxmox including Ceph but
>     >     not use those hosts for virtualization…
>     >
>     >
>     >     Am 14.08.2017 um 14:07 schrieb Gilberto Nunes:
>     >     > Hi
>     >     >
>     >     > Regard Ceph, can I use 3 Ubuntu Server 16 Xenial to build a Ceph server to
>     >     > connecte Proxmox 5.0??? Is here compatibility between then???
>     >     >
>     >     > Thanks
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