Hi Justin, I'm doing iSCSI HA. Myself and several others have had troubles with LIO and Ceph, so until the problems are fixed, I wouldn't recommend that approach. But hopefully it will become the best solution in the future. If you need iSCSI, currently the best method is probably: Shared IP failover +TGT with RBD backend By default TGT won't be able to fail between cluster nodes if there are IOs in progress, so you might need to get creative to overcome this. The other option, if it meets your requirements is NFS with a shared failover IP. Nick > -----Original Message----- > From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of > Eric Eastman > Sent: 05 April 2015 02:37 > To: Justin Chin-You > Cc: Ceph Users > Subject: Re: Understanding High Availability - iSCSI/CIFS/NFS > > You may want to look at the Clustered SCSI Target Using RBD Status > Blueprint, Etherpad and video at: > > https://wiki.ceph.com/Planning/Blueprints/Hammer/Clustered_SCSI_target > _using_RBD > http://pad.ceph.com/p/I-scsi > https://www.youtube.com/watch?v=quLqLnWF6A8&index=7&list=PLrBUGiI > NAakNGDE42uLyU2S1s_9HVevK- > > Eric > > > On Sat, Apr 4, 2015 at 7:30 AM, Justin Chin-You <justin.chinyou@xxxxxxxxx> > wrote: > Hi All, > > Hoping someone can help me understand CEPH HA or point me in the > direction of a doc I missed. > > I understand how CEPH HA itself works in regards to PG, OSD and > Monitoring. However what isn't clear for me is the failover in regards to > things like iSCSI and the not yet production ready CIFS/NFS. > > Scenario: > I have 2 servers that are peered and running CEPH and I am replicating > between both. Using CEPH I have iSCSI targets and CIFS/NFS stores. > > In the event a server should fail how are iSCSI Initiators and CIFS/NFS clients > re-directed? I am assuming Multipath and Virtual IPs but I can't figure out if > this is something I need to configure/run on the OS side or if it is in CEPH > itself. > > Any help appreciated! > > Thanks! > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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