Take a look at pglogical ... we've used it for 9.4 -> 9.6 and the same theories apply going to 10.x I imagine. People have used it in combination with pgbouncer to achieve near outage-less upgrades. Some helpful links below: https://blog.2ndquadrant.com/pglogical-logical-replication-postgresql-10/ https://blog.2ndquadrant.com/near-zero-downtime-automated-upgrades-postgresql-clusters-cloud/ https://blog.2ndquadrant.com/near-zero-downtime-automated-upgrades-postgresql-clusters-cloud-part-ii/ On 27/06/18, 10:38 AM, "John Scalia" <jayknowsunix@xxxxxxxxx> wrote: Hi all, My employer is in the process of upgrading PostgreSQL, and they would like me to make this happen without any real interruption of service. As I understand it, 9.6 does not support the publish/subscribe model like 10.4 does, but logical replication is the basis of that model. So, does anyone have any suggestions for how to implement the receiver side on a 10.4 server? Or could you at least point me to some sort of how-to page? TIA, Jay Sent from my iPad