"Rojas, Fernando (CIAT)" <f.rojas@cgiar.org> writes:
> FATAL: database files are incompatible with operating system
> DETAIL: The database cluster was initialized with LC_COLLATE =
> "en_US.UTF-8", which is not recognized by setlocale().
> HINT: It looks like you need to initdb or install locale support.
Like the hint says, you seem to be missing locale support. Perhaps you
removed the relevant packages? I'm not sure about RHL8, but on some
Linux distributions the needed files are in glibc-locale.
BTW, RHL8 is really old; you ought to think about updating to a more
modern OS release.
regards, tom lane