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