Editing Installing EPrints on RHEL/Fedora/CentOS (section)

== Troubleshooting ==
* If setup is successful but then you cannot access EPrints through your web browser this is often due to firewalld being enabled by default on recent versions of RHEL, Fedora and CentOS.  If firewalld is running either disable it (<tt>systemctl disable --now firewalld</tt>) or [https://docs.rackspace.com/support/how-to/allow-web-traffic-in-a-firewalld-software-firewall/ configure it to allow HTTP/HTTPS traffic].
* If you are running a version of EPrints below 3.4.6 you cannot run Apache in MPM event mode and you need to use MPM prefork instead.  This is due to Perl's <tt>XML::LibXSLT</tt> being initiated at the wrong time leading earlier version of EPrints to cause Apache (httpd) to segfault when started.  If you are running an earlier version and want to run Apache in MPM event mode, you can uninstall <tt>XML::LibXSLT</tt> either as the RPM perl-XML-LibXSLT or possible from CPAN using <code>cpanm --uninstall XML::LibXSLT</code>.
* If you are having problems uploading files or similar functional issues, this may be due to SELinux being enabled. [[EPrints and SELinux|See advice for enabling SELinux with EPrints]].
* If you are having trouble getting additional subdomains beyond username.eprints-hosting.org working, then it could be you need wildcards enabled on the DNS records to facilitate the likes of somethingcoolhere.username.eprints-hosting.org urls.