Wasim Devale <wasimd60@xxxxxxxxx> writes: > I want primary and secondary running on CentOS7 in sync with primary and > secondary running on RHEL. Is it possible by any chance that postgresql > allows. If you mean you want to sync something on CentOS7 with something on RHEL8 or RHEL9, that's pretty dangerous because glibc's collations will not be the same [1]. You might get away with doing logical replication, but don't try physical replication. regards, tom lane [1] https://wiki.postgresql.org/wiki/Locale_data_changes