Hi, I'm running a webapp under Tomcat 9 on Ubuntu 20.04. We run Tomcat as an ad-hoc system user who owns the Tomcat installation files.
On Friday, the app stopped working. Over the weekend, I determined that the problem was that something had reset the ownership of the Tomcat installation files to the 'tomcat' user so that the webapp no longer had permission to access its own files. I had to spend a couple of days poring through my notes to figure out what ownership was required for what files and then manually change everything that needed it back to our ad-hoc user. Since this change affected only Tomcat files, I can only guess that an update from Tomcat altered the ownership of these files. Did any recent Tomcat update change file and folder ownership of the Tomcat installation to force them to the 'tomcat' user? Joel
