On Thu, Jul 7, 2016 at 1:30 PM, Han Zhou <zhou...@gmail.com> wrote: > > > On Thu, Jul 7, 2016 at 1:15 PM, Andy Zhou <az...@ovn.org> wrote: > >> >> >> On Thursday, July 7, 2016, Russell Bryant <russ...@ovn.org> wrote: >> >>> >>> On Thu, Jul 7, 2016 at 2:44 PM, Andy Zhou <az...@ovn.org> wrote: >>> >>>> On Thu, Jul 7, 2016 at 11:37 AM, Han Zhou <zhou...@gmail.com> wrote: >>>> >>>>> Hi Andy, >>>>> >>>>> Sorry #1 seems not clear to me. It sounds like a etcd cluster running >>>>> behind a ovsdb-server cluster? Then what would be the HA mechanism for the >>>>> ovsdb-server layer? >>>>> >>>> >>>> Yes, your understanding is correct, expect ovsdb-servers do not form a >>>> cluster, they only connect to etcd servers. >>>> >>>> etcd servers form the HA cluster. All ovsdb-servers maintain >>>> connections to the leader etcd server. OVSDB servers do not store >>>> transactions, they essentially translate ovsdb protocol into etcd gRPC >>>> protocol. >>>> >>> >>> Would you be able to run N copies of ovsdb-server in this case? >>> >> >> Yes, ovsdb-client can connect to any one of them. >> > > Good, so does it mean a load balancer can be put between clients and > ovsdb-servers? >
Yes, but not required. The clients can randomly pick a ovsdb-server to connect to without using a load-balancer.
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