In this series I explain how to install Jenkins, GitLab and Docker on three separate virtual machines in Proxmox and connect them together to run the job in Jenkins, that is using Jenkins pipeline located at GitLab server and run a docker container from predefined configuration in a docker file to perform a test. Scroll down to read the tutorial, please.

Intro:

Part one:

Part two:

Tutorial

Add Jenkins repository

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sudo zypper addrepo http://pkg.jenkins.io/opensuse-stable/ jenkins
sudo zypper ref

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wget https://pkg.jenkins.io/debian-stable/jenkins.io.key
sudo apt-key add jenkins.io.key
echo "deb https://pkg.jenkins.io/debian-stable binary/" | tee /etc/apt/sources.list.d/jenkins.list
sudo apt update -y

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sudo dnf install wget
wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat-stable/jenkins.repo
sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key

Install Java 11 open JDK

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sudo zypper install java-11-openjdk

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sudo apt install openjdk-11-jdk

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sudo dnf install java-11-openjdk

Check Java version

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java -version

Install Jenkins

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sudo zypper install jenkins

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sudo apt install jenkins

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sudo dnf install jenkins

Enable and start Jenkins

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sudo systemctl enable jenkins
sudo systemctl start jenkins

symlink="$(pwd)/$1"

Add port 8080 in firewalld, reload the configuration and check the firewall configuration status

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sudo firewall-cmd --add-port=8080/tcp --permanent --zone="public"
sudo firewall-cmd --reload
sudo firewall-cmd --list-all

Check the IP address of your machine

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hostname -I

Copy the URL and paste it into the address bar in your browser and continue the installation

Display and copy the password from the file and paste it into the admin’s password field. Use combination ctrl+shift+c to copy the displayed password from the command line.

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sudo cat /var/lib/jenkins/secrets/initialAdminPassword

Install suggested plugins and continue

Create first administrator and continue.

Leave Jenkins URL as it is.

Install locale plugin

Go to Manage Jenkins, then click Plugins, click available plugins, in search field type locale and hit Enter. Click on the button install without restart. Then click one more time on Manage Jenkins, Click System and scroll down to locale section. Set en_us language in Default language field and select Ignore browser preference and force this language to all users. Click Apply and Save buttons. Install the Restart plugin the same way and restart Jenkins.

Remove initial admin’s password.

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sudo rm -f /var/lib/jenkins/secrets/initialAdminPassword

Summarize

Using above method you have working Jenkins that you can later connect with GitLab and Docker servers to create environment for testing purpose.