How-to-Install-Jenkins-on-Rocky-Linux-9.md

Gist for https://youtu.be/2-L0WohfsqY

Install Temurin JDK

From CentOS/RHEL/Fedora Instructions:

• Create RPM repository

cat <<EOF > /etc/yum.repos.d/adoptium.repo
[Adoptium]
name=Adoptium
baseurl=https://packages.adoptium.net/artifactory/rpm/${DISTRIBUTION_NAME:-$(. /etc/os-release; echo $ID)}/\$releasever/\$basearch
enabled=1
gpgcheck=1
gpgkey=https://packages.adoptium.net/artifactory/api/gpg/key/public
EOF

• Install Temurin 11 (this will fail)

  • dnf -y install temurin-11-jdk

• Modify /etc/yum.repos.d/adoptium.repo

  • change rocky/$releasever to rocky/8

• Install Temurin 11 (this will succeed)

  • dnf -y install temurin-11-jdk

Install Jenkins

From Jenkins Redhat Packages:

• Create RPM repository

  • wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo

• Add repository key

  • rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key

• Install Jenkins

  • dnf -y install jenkins

Configure Jenkins

• systemctl --full status jenkins
• systemctl edit jenkins

[Service]
Environment="JAVA_OPTS=-Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -Djava.io.tmpdir=/var/cache/jenkins/tmp/ -Dorg.apache.commons.jelly.tags.fmt.timeZone=America/New_York -Duser.timezone=America/New_York"
Environment="JENKINS_OPTS=--pluginroot=/var/cache/jenkins/plugins"

• mkdir -p /var/cache/jenkins/tmp
• chown -R jenkins:jenkins /var/cache/jenkins/tmp
• systemctl show jenkins
• systemd-analyze verify jenkins.service
• systemctl start jenkins
• systemctl --full status jenkins
• journalctl -u jenkins

Thanks for these great instructions and the YouTube video.. Super helpful!

One minor error above, it should be "systemctl --full status jenkins" on the second to last line. Looks like a "long dash" has got in there instead of two short dashes.

Thanks for catching that. Copy and paste strikes again.

Thanks for updating. I'm new to both Rocky and Jenkins (I use Ubuntu mostly so a switch from Debian to Red Hat is taking time!) and this was very useful.