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. 

>>> chandan jain <chandandevops(a)gmail.com&gt; schrieb am 09.03.2021 um 10:58 in Nachricht <CAMojrsXkoHnv0fp_gWOeEADnzdXELiq3AjR-w0pJjGft5KBU5A(a)mail.gmail.com&gt;: > 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 <quanah(a)symas.com&gt; wrote: > >> >> >> --On Sunday, March 7, 2021 8:39 PM +0530 chandan jain >> <chandandevops(a)gmail.com&gt; 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> >>

>>> chandan jain <chandandevops(a)gmail.com&gt; schrieb am 10.03.2021 um 09:46 in Nachricht <CAMojrsUnrA_LYH0tHqCZoCTezu8mXPCys=VHEEHtbOvRwawhbg(a)mail.gmail.com&gt;: > 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. That's correct, but the replication starts practically immediately, so usually the data is up-to-date within a second if the other side is ready and reachable. After all LDAP was never designed to be a real-time database. > > 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. A load-balancer that is not doing round-robin (but some other policy, like response time or throughput) probably would be OK. Regards, Ulrich > > Regards > Chandan > > On Wed, Mar 10, 2021, 13:29 Ulrich Windl < Ulrich.Windl(a)rz.uni-regensburg.de&gt; > wrote: > >> >>> chandan jain <chandandevops(a)gmail.com&gt; schrieb am 09.03.2021 um 10:58 >> in >> Nachricht >> <CAMojrsXkoHnv0fp_gWOeEADnzdXELiq3AjR-w0pJjGft5KBU5A(a)mail.gmail.com&gt;: >> > 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 <quanah(a)symas.com&gt; wrote: >> > >> >> >> >> >> >> --On Sunday, March 7, 2021 8:39 PM +0530 chandan jain >> >> <chandandevops(a)gmail.com&gt; 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> >> >> >> >> >> >> >>