Re: One way replication in PostgreSQL

Hello,

Thanks a lot for the suggested solutions.

So, I can use WAL-shipping replication from Primary to the Secundary server, but it's only for full replication.

Let's call " P " the provider/primary/master and " S " the subscriber/secundary/slave one.
For partial replication (not all the tables), the solutions should use a third (intermediate / middle) server which could have both ways flow with the server P but only one way flow towards the server S.
For example, a logical replication (pglogical or logical Postgresql replication) between server P and the middle server and then a WAL-shipping replication between middle server and server S.
Is that right ?

About the " FDW " solution in " an external server " (a middle one), is it possible to integrate the FDW in the P server to avoid the " external server " ?

=> What about the trigger-based replication systems like Slony or Londiste ; is it really necessary to have a connection or flow from the server S towards the server P ?

Regards

De: "PALAYRET Jacques" <jacques(dot)palayret(at)meteo(dot)fr>
À: pgsql-general(at)lists(dot)postgresql(dot)org
Envoyé: Lundi 3 Juin 2019 18:00:51
Objet: One way replication in PostgreSQL

Hello,

If, for security reasons, I can't create a connection or a flow from subscriber/secundary/slave towards provider/primary/master, witch replication systems can I use ?

If possible, I would prefer partial replication (only some tables) to full base replication (all instances).

Do trigger-based replication systems (like Slony or Londiste or others) need a connection or flow from subscriber to the provider ?

Thanks in advance
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PALAYRET JACQUES
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jacques(dot)palayret(at)meteo(dot)fr
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