I needed to update the SSL cert on my GeoServer. I hence had to shut it down and restart. I am using Tomcat 8.5.56 and Geoserver 2.x (not sure exactly which one; hard to find out; it has been so long since installed)
I successfully shut it down by running sudo /opt/tomcat/bin/shutdown.sh and then manually finding any process that is somehow not shut-down and killing it. Then I update the conf/server.xml file with the new SSL cert info and finally run sudo /usr/bin/authbind --deep /opt/tomcat/bin/startup.sh and when i check on the Catalina logs: in $CATALINA_BASE/logs/catalina-<today>.log I get the following error:
14-Sep-2022 16:09:10.954 SEVERE [main] org.apache.catalina.core.StandardService.initInternal Failed to initialize connector [Connector[HTTP/1.1-443]]
I have tried stopping apache2 service in case it is "using" port 443. I have tried adjusting the Catalina server.xml file to configure the to use port 8443. But in all cases I still get the same error message "Failed to initialize connector".
I am at a loss of how to properly restart Tomcat/GeoServer.