Thanks Ulrich, but Won't MMR behind a loadbalancer cause data inconsistentcy if I allow writes to both nodes. As per openldap documentation, mirror mode is not a multi provider solution , as writes go to just one of the mirror at a time in a 2 node setup.
I am confused which one shall I use, N node mirror mode setup behind a load balancer as suggested by Quanah (write to one provider and read with other mirror pool members) or N nodes with multi provider setup spreading writes to both nodes. Regards Chandan On Wed, Mar 10, 2021, 13:29 Ulrich Windl <[email protected]> wrote: > >>> chandan jain <[email protected]> schrieb am 09.03.2021 um 10:58 > in > Nachricht > <camojrsxkohnv0fp_gwoeeadnzdxeliq3ajr-w0pjjgft5kb...@mail.gmail.com>: > > Thanks, > > > > Mirror mode configuration cannot be horizontal scaled what I understood > as > > writes are going to one of the node, and other act as an active standby. > > > > I want 2 or more nodes behind a load balancer which can share read/write > > load. A kind of active active setup. > > I wonder: If you have a 2-node MMR setup fed through a loadbalancer for > writing, it there really a performance benefit over sending all updates to > one node that replicates the changes to the other? > > Regards, > Ulrich > > > > > Regards > > Chandan Jain > > > > On Mon, Mar 8, 2021, 23:44 Quanah Gibson-Mount <[email protected]> wrote: > > > >> > >> > >> --On Sunday, March 7, 2021 8:39 PM +0530 chandan jain > >> <[email protected]> wrote: > >> > >> > > >> > > >> > Thanks, Quanah > >> > > >> > > >> > Is it possible to direct upgrade from 2.4.32 to latest version. > >> > >> If you (temporarily) stick with the same backend, and in this case, if > >> that > >> same backend is linked to the exact same version of BDB, yes. I.e., > >> compile the back-bdb/hdb backends against the same version of BDB, > >> upgrade, > >> and then migrate to back-mdb. > >> > >> > Also, can we horizontal scale a 2 node mirror mode setup? I am > confused > >> > after seeing suggestions on different sites. > >> > >> I don't understand the question here. Mirror mode is just a > configuration > >> of MMR with a load balancer in front. > >> > >> --Quanah > >> > >> -- > >> > >> Quanah Gibson-Mount > >> Product Architect > >> Symas Corporation > >> Packaged, certified, and supported LDAP solutions powered by OpenLDAP: > >> <http://www.symas.com> > >> > > > > >
