On Fri, 24 Aug 2018, andy.dossett at btinternet.com wrote:

> Hi
> 
> We are currently running our master server on SuSE 10 with Postgres 9.3 and Slony 2.2.3. Our slaves are
> running on CentOS, also with Postgres 9.3 and Slony 2.2.3.
> 
> We are running a project to upgrade the master to SuSE 12 and Postgres 9.6. Unfortunately Slony 2.2.3 would
> not install so we went up to 2.2.6. Unfortunately this means that we have to upgrade the slaves to 2.2.6 as
> well.
> 
> However, 2.2.7 has just been released which includes the enable_version_check feature.
> 
> If we went up to 2.2.7 on the master and turned version checking off, would this enable master and slaves
> to replicate, or would the version checking in the slave prevent it?
> 
> If turning off version checking does allow replication, are 2.2.3 and 2.2.7 compatible with each other?

You should test it but there is a good chance data replication will work 
between them.  Just looking at the release notes I don't see anything that 
would obviously break data replication. Configuration events, including 
failovers  and DDL replication did have some changes though.



> 
> Thanks
> 
>  Andy
> 
> 
> 
>