Often an rpm from an older Linux OS will still work on a newer one, but
it depends on how complicated it is.  It would be best to recompile it
from the source rpm and make a new binary rpm out of it based on RHEL7,
although it is likely that some porting will also need to be done for
that.

An alternative is to install your SL6 rpm into a CentOS6 docker or
singularity container, and run the docker or singularity application on
the newer operating system.

In any case, you probably are going to need some help, and I don't know
if there is anybody on this mailing list that provides such professional
services.  I suggest googling for that.

Dave

On Tue, Jun 29, 2021 at 06:43:12AM +0000, Nick Matchett wrote:
> I hope that someone could help me identify an individual or business that would be able to help me with the following problem.
> 
> My business has some software that we acquired the responsibility to maintain and support, and currently sits on Scientific Linux version 6.3.  Unfortunately, we are at a stage where our customers are asking to bring the software onto a more current version of a Linux platform.
> 
> We would like to migrate to Red Hat or CentOS version 7.9  (or perhaps version 8)
> 
> We have been working on a migration from Scientific Linux 6.3 to Redhat 7.9.
> 
> Unfortunately, we have limited Linux OS skills in our business, and we have approached this with a fresh RH 7.9 install and then applying the RPM of our software.  There is a big mismatch between Scientific Linux 6.3 to Redhat 7.9 in terms of libraries, file structure and type of libraries between the software and we have not been able to reconcile those.
> 
> I would appreciate any suggestion or advice on the best upgrade path to achieve this update  and would be happy to take recommendations on individuals or companies who might be interested in a professional service engagement to help solve the problem.
> 
> Thanks in advance