Thanks, Mark,
your suggestion works perfectly. For the record, I now have a
file /etc/systemd/system/jenkins.service.d/override.conf with the following
content:
[Service]
Environment="JAVA_HOME=/usr/lib/jvm/temurin-17-jdk-amd64"
Environment="JENKINS_PORT=8008"
This changes both the JVM, that is used to run Jenkins, and the port number.
Jochen
On Tuesday, January 2, 2024 at 8:30:08 PM UTC+1 Mark Waite wrote:
> On Tuesday, January 2, 2024 at 12:22:51 PM UTC-7 Jochen wrote:
>
>
> Hi,
>
> I am using the Jenkins Debian packages from
>
> https://pkg.origin.jenkins.io/debian/
>
> to install, and update Jenkins. In general, I'm quite happy with that.
> There is one exception, though:
>
> My setup requires changing of two environment variables, JENKINS_PORT, and
> JAVA_HOME. Right now, I have configured those by editing jenkins.service.
> In other words, I am advising systemd to set the proper values.
>
> The problem with that: Any update of Jenkins (of which there are quite a
> few, thankfully) replaces the jenkins.service file, thus overwriting my
> changes. In other words: After each update, I need to reapply my changes to
> jenkins.service.
>
> Is there any better location for those values, that survives updates?
>
>
> There is a better location for those values and it will survive updates.
> The "Managing systemd services"
> <https://www.jenkins.io/doc/book/system-administration/systemd-services/>
> page describes the "systemctl edit jenkins" command that creates a local
> copy of the overrides file . That copy is preserved across upgrades.
>
> Mark Waite
>
>
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