Keywords: Jenkins - Windows - Technical issue - Upgrade
I was working with a Jenkins installation on a server. Our company uses Qualys to scan for vulnerabilities. It noticed the version of Apache Tomcat was 8.0 so I wanted to update it to 9.0. I tried updating Apache Tomcat by downloading the core 64bit zip from the Tomcat Apache website.
I made a backup of C:\Bitnami\jenkins-2.32.1-0\apache-tomcat. I stopped the Apache, Tomcat 8 and Jenkins services. I then extracted the contents of the zip, copied those files and pasted them into C:\Bitnami\jenkins-2.32.1-0\apache-tomcat. I let it overwrite all the files it matched.
It seems Tomcat 9 is running fine when I go to http://127.0.0.1:8080 on the server. If I try to access jenkins by going to http://127.0.0.1/jenkins I get the "Your application is not available" message.
I'm not familiar with Jenkins and I inherited this server along with everything on it from another admin. Not sure what to check or where to go from here.