Hi Justin,
I could probably be wrong on this but you're having to use a Ceph gateway rather than natively interracting with the cluster right? If so then the only way that you'd really be able to get HA would be to install a load balancer in front of multiple gateways. Under normal conditions when all is good they can share the load and when one fails it's simply dropped out of the rotation but you continue to hit the same IP address.
As I understand, the fact that there isn't a native fault tolerance here is a large part of the reason why it's not currently production ready.
Kind regards
Iain
On Sat, Apr 4, 2015 at 6:30 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!
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