Working on EDB postgres upgrade from 9.3 to 9.6and need help with planning approaches and identifying risks and mitigate risks.
I am working on EDB postgres upgrade project with typical architecture having multiple hosts having multiple slaves.
I will provide more details as we progress.
At this point I am only looking for suggestions and improvements on our current upgrade plan.
Review Database architecture and guide/suggest what can be done and what can be improved.
I have done a Poc on single host environment and it went well but with databases spread across multiple hosts, I am trying to get suggestions on how it can be done.