On Fri, 24 Aug 2018, [email protected] 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
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