On Mon, Aug 15, 2016 at 4:45 PM, Andy Zhou <az...@ovn.org> wrote: > > > On Mon, Aug 15, 2016 at 1:36 PM, Russell Bryant <russ...@ovn.org> wrote: > >> >> >> On Mon, Aug 15, 2016 at 2:54 PM, Andy Zhou <az...@ovn.org> wrote: >> >>> >>> >>> On Thu, Aug 11, 2016 at 1:22 PM, Russell Bryant <russ...@ovn.org> wrote: >>> >>>> >>>> >>>> On Tue, Aug 9, 2016 at 7:49 PM, Andy Zhou <az...@ovn.org> wrote: >>>> >>>>> Automatically launch backup server for OVN SB database that replicates >>>>> all transactions of the active server. This can be handy for >>>>> experimenting with the newly added replication feature. >>>>> >>>>> Signed-off-by: Andy Zhou <az...@ovn.org> >>>>> >>>> >>>> Sure, seems fine to me. You could also add some notes to >>>> OVN-Tutorial.md about how to poke at the backup replica. >>>> >>> >>> How about the following incremental? I'd like to fold it in before >>> pushing >>> diff --git a/tutorial/OVN-Tutorial.md b/tutorial/OVN-Tutorial.md >>> index a1fff0b..be9805c 100644 >>> --- a/tutorial/OVN-Tutorial.md >>> +++ b/tutorial/OVN-Tutorial.md >>> @@ -25,12 +25,17 @@ environment: >>> 1. Creates the `OVN_Northbound` and `OVN_Southbound` databases as >>> described in >>> [ovn-nb(5)] and [ovn-sb(5)]. >>> >>> - 2. Creates the `hardware_vtep` database as described in [vtep(5)]. >>> + 2. Creates a backup server for `OVN_Southbond` database. Sandbox >>> launch >>> + screen provides the instructions on accessing the backup database. >>> + However access to the backup server is not required to go through >>> the >>> + tutorial. >>> >>> - 3. Runs the [ovn-northd(8)], [ovn-controller(8)], and >>> [ovn-controller-vtep(8)] >>> + 3. Creates the `hardware_vtep` database as described in [vtep(5)]. >>> + >>> + 4. Runs the [ovn-northd(8)], [ovn-controller(8)], and >>> [ovn-controller-vtep(8)] >>> daemons. >>> >>> - 4. Makes OVN and VTEP utilities available for use in the environment, >>> + 5. Makes OVN and VTEP utilities available for use in the environment, >>> including [vtep-ctl(8)], [ovn-nbctl(8)], and [ovn-sbctl(8)]. >>> >>> Note that each of these demos assumes you start with a fresh sandbox >>> >> >> This incremental looks good. >> >> Any reason not to add a backup for northbound, as well? >> > It can be easily added. I know we need to replicate SB for sure, but was > not sure about NB. > For the purpose of experimenting with the backup feature, one back server > seems to be sufficient. > We can certainly expend the set up to be closer to real life usage down > the road. >
I agree that 1 is fine for experimentation. In practice, I think we need the same replication and backup for both NB and SB. I'd like to avoid having to repopulate the NB db in the event of a host failure. -- Russell Bryant _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
