Am 08.10.26 um 12:49 schrieb Christoph Kukulies via users:
I'm planning to install (reinstall) tomcat9 on my Ubuntu 24.04 server. I had installed it manually before but since Ubuntu 24.04 the service got masked. When unpacking the tar distribution of tomcat9 it usually goes to /opt/tomcat(9) or this is at least the recommended location. In my /etc/tomcat9 directory there still is my configuration (server.xml). How do I best integrate my existing configuration into the newly installed one in /opt/tomcat? Symlink to server.xml?
It's your decision how much you want to mirror the Unix-integration to have all configuration files available in /etc, or if you accept to have all tomcat9-related files in /opt/tomcat9. Personally, for a self-installed (and updated) version, I'd either leave it all in one place (/opt/tomcat9), or create a script for a repeatable installation (that extracts the files to the same locations for future upgrades).
Well, as I said "personally": I'd leave everything in /opt/tomcat9 (see below for caveats).
How to best integrate the existing settings? I'd diff the existing server.xml against the downloaded one, and mirror whatever your personal settings are.
Are there other configurations files to take care of?
Any and all that you have changed yourself. Again, a diff tool is your friend. For your own installation, you might want to create bin/setenv.sh, which can set environment variables. I'm not sure how and/or if this was handled a different way in the Ubuntu package.
Pay attention to repeatability (e.g. backup and documentation): The next upgrade will overwrite all the files, including server.xml and webapps/ROOT, if you just unzip it on top of the existing installation. Depending on your preferences, you can make /opt/tomcat9 a symlink to /opt/tomcat-9.0.x and use this as staging ground for upgrades, so that you never overwrite, but have the opportunity to diff the next with the current version before you change the symlink's target.
Of course, when you make this a daemon, make sure to create a dedicated user for it and don't run Tomcat as root.
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