Hello Brian, Thanks for your response!
Can you please elaborate on this. Do you mean i must use 4 x 1TB HDD on each nodes rather than 2 x 2TB? This is going to be a lab environment. Can you please suggest to have best possible design for my lab environment. On Wed, Aug 17, 2016 at 9:54 AM, Brian :: <b...@iptel.co> wrote: > You're going to see pretty slow performance on a cluster this size > with spinning disks... > > Ceph scales very very well but at this type of size cluster it can be > challenging to get nice throughput and iops.. > > for something small like this either use all ssd osds or consider > having more spinning osds per node backed by nvme or ssd journals.. > > > > On Wed, Aug 17, 2016 at 1:14 PM, Gaurav Goyal <er.gauravgo...@gmail.com> > wrote: > > Dear Ceph Users, > > > > Can you please address my scenario and suggest me a solution. > > > > Regards > > Gaurav Goyal > > > > On Tue, Aug 16, 2016 at 11:13 AM, Gaurav Goyal <er.gauravgo...@gmail.com > > > > wrote: > >> > >> Hello > >> > >> > >> I need your help to redesign my ceph storage network. > >> > >> As suggested in earlier discussions, i must not use SAN storage. So we > >> have decided to removed it. > >> > >> Now we are ordering Local HDDs. > >> > >> My Network would be > >> > >> Host1 --> Controller + COmpute --> Local Disk 600GB Host 2--> Compute2 > --> > >> Local Disk 600GB Host 3 --> Compute2 > >> > >> Is it right setup for ceph network? For Host1 and Host2 , we are using 1 > >> 600GB disk for basic filesystem. > >> > >> Should we use same size storage disks for ceph environment or i can > order > >> Disks in size of 2TB for ceph cluster? > >> > >> Making it > >> > >> 2T X 2 on Host1 2T X 2 on Host 2 2T X 2 on Host 3 > >> > >> 12TB in total. replication factor 2 should make it 6 TB? > >> > >> > >> Regards > >> > >> Gaurav Goyal > >> > >> > >> On Thu, Aug 4, 2016 at 1:52 AM, Bharath Krishna < > bkris...@walmartlabs.com> > >> wrote: > >>> > >>> Hi Gaurav, > >>> > >>> There are several ways to do it depending on how you deployed your ceph > >>> cluster. Easiest way to do it is using ceph-ansible with purge-cluster > yaml > >>> ready made to wipe off CEPH. > >>> > >>> https://github.com/ceph/ceph-ansible/blob/master/purge-cluster.yml > >>> > >>> You may need to configure ansible inventory with ceph hosts. > >>> > >>> Else if you want to purge manually, you can do it using: > >>> http://docs.ceph.com/docs/hammer/rados/deployment/ceph-deploy-purge/ > >>> > >>> > >>> Thanks > >>> Bharath > >>> > >>> From: ceph-users <ceph-users-boun...@lists.ceph.com> on behalf of > Gaurav > >>> Goyal <er.gauravgo...@gmail.com> > >>> Date: Thursday, August 4, 2016 at 8:19 AM > >>> To: David Turner <david.tur...@storagecraft.com> > >>> Cc: ceph-users <ceph-users@lists.ceph.com> > >>> Subject: Re: [ceph-users] Fwd: Ceph Storage Migration from SAN storage > to > >>> Local Disks > >>> > >>> Please suggest a procedure for this uninstallation process? > >>> > >>> > >>> Regards > >>> Gaurav Goyal > >>> > >>> On Wed, Aug 3, 2016 at 5:58 PM, Gaurav Goyal > >>> <er.gauravgo...@gmail.com<mailto:er.gauravgo...@gmail.com>> wrote: > >>> > >>> Thanks for your prompt > >>> response! > >>> > >>> Situation is bit different now. Customer want us to remove the ceph > >>> storage configuration from scratch. Let is openstack system work > without > >>> ceph. Later on install ceph with local disks. > >>> > >>> So I need to know a procedure to uninstall ceph and unconfigure it from > >>> openstack. > >>> > >>> Regards > >>> Gaurav Goyal > >>> On 03-Aug-2016 4:59 pm, "David Turner" > >>> <david.tur...@storagecraft.com<mailto:david.tur...@storagecraft.com>> > wrote: > >>> If I'm understanding your question correctly that you're asking how to > >>> actually remove the SAN osds from ceph, then it doesn't matter what is > using > >>> the storage (ie openstack, cephfs, krbd, etc) as the steps are the > same. > >>> > >>> I'm going to assume that you've already added the new storage/osds to > the > >>> cluster, weighted the SAN osds to 0.0 and that the backfilling has > finished. > >>> If that is true, then your disk used space on the SAN's should be > basically > >>> empty while the new osds on the local disks should have a fair amount > of > >>> data. If that is the case, then for every SAN osd, you just run the > >>> following commands replacing OSD_ID with the osd's id: > >>> > >>> # On the server with the osd being removed > >>> sudo stop ceph-osd id=OSD_ID > >>> ceph osd down OSD_ID > >>> ceph osd out OSD_ID > >>> ceph osd crush remove osd.OSD_ID > >>> ceph auth del osd.OSD_ID > >>> ceph osd rm OSD_ID > >>> > >>> Test running those commands on a test osd and if you had set the weight > >>> of the osd to 0.0 previously and if the backfilling had finished, then > what > >>> you should see is that your cluster has 1 less osd than it used to, > and no > >>> pgs should be backfilling. > >>> > >>> HOWEVER, if my assumptions above are incorrect, please provide the > output > >>> of the following commands and try to clarify your question. > >>> > >>> ceph status > >>> ceph osd tree > >>> > >>> I hope this helps. > >>> > >>> > Hello David, > >>> > > >>> > Can you help me with steps/Procedure to uninstall Ceph storage from > >>> > openstack environment? > >>> > > >>> > > >>> > Regards > >>> > Gaurav Goyal > >>> ________________________________ > >>> [cid:image001.jpg@01D1EE42.88EF6E60]<https://storagecraft.com> > >>> > >>> David Turner | Cloud Operations Engineer | StorageCraft Technology > >>> Corporation<https://storagecraft.com> > >>> 380 Data Drive Suite 300 | Draper | Utah | 84020 > >>> Office: 801.871.2760 | Mobile: 385.224.2943<tel:385.224.2943> > >>> > >>> ________________________________ > >>> If you are not the intended recipient of this message or received it > >>> erroneously, please notify the sender and delete it, together with any > >>> attachments, and be advised that any dissemination or copying of this > >>> message is prohibited. > >>> > >>> ________________________________ > >>> > >> > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > >
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