Le mar. 4 juin 2019 à 09:03, PALAYRET Jacques <jacques.palay...@meteo.fr> a écrit :
> 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. > > Yes. 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 ? > > That could work. 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 " ? > > Not sure I understand where you're going here. => 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 ? > > As far as I remember, with Slony, P must be able to connect to S, and S must be able to connect to P. -- Guillaume. Dalibo.
