The appropriate software must be restarted whenever the configuration is modified.
Restart when server.xml, shrine.conf or override.conf are modified, or a new WAR file is put in place
To deploy a new WAR file:
(Re)start when shibboleth2.xml or other Shibboleth configuration files are modified.
Restart after restarting Shibboleth; or when there is a change in Apache configuration.