This document covers upgrading the 64bit version Shibboleth SP on CentOS.
It is always a good idea to backup the contents of
/etc/shibboleth before you begin. And you must backup
/etc/httpd/conf.d/shibd.conf as it gets blown away.
To upgrade, do the following:
/etc/httpd/conf.d/shibd.conf and make any necessary changes to files in
/etc/shibboleth if the install process reported any errors.
Restart Apache and shibd
Restart Apache and shibd to make sure Apache has the updated config in