we are considering changing the PostgreSQL platform from SUSE SLE to Red Hat. To keep service interruptions as short as possible, the idea is to set up a streaming replication from the SUSE server to be replaced to a temporary Red Hat server and then replace that SUSE server with the newly setup Red Hat server.
My idea is to set up a streaming replication for this. But this of course only works if the data files would be binary compatible.
It seems to be possible, see this conference talk: https://youtu.be/LFHI58JCm0Q?si=EWeXrKmCURTz_VN- They have performed a linux migration with physical replication, but there are many pitfalls around!
I have performed the same kind of migration with logical replication and, in my context, it was far easier!
So, I wonder, if this is possible. We have a lot of databases, some of them need to be highly available and some are large too.
Are there any obstacles that definitely make that a no-go? Do I risk corruption? It's both Linux, just a different distribution.
The version of the glibc binary seems to be a determining factor
