Installing Jenkins in Docker Compose and Docker

January 15, 2023

English

Installing Docker, Jenkins, and Docker-Compose Jenkins

This guide will walk you through the steps to install Docker, Jenkins, and set up Jenkins with Docker-Compose.

Prerequisites

A machine with a supported Linux distribution (Ubuntu 20.04 is used in this guide).
A user with sudo privileges.

Step 1 : Install Jenkins

Add Jenkins repository key:

curl -fsSL https://pkg.jenkins.io/debian/jenkins.io.key | sudo tee /usr/share/keyrings/jenkins-keyring.asc > /dev/null

Add the Jenkins repository:

echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] https://pkg.jenkins.io/debian binary/ | sudo tee /etc/apt/sources.list.d/jenkins.list > /dev/null

Update package database:
```
sudo apt update
```
Install Jenkins:
```
sudo apt install jenkins
```
Start Jenkins:
```
sudo systemctl start jenkins
```
Enable Jenkins to start at boot:
```
sudo systemctl enable jenkins
```
Verify Jenkins installation:
```
sudo systemctl status jenkins
```
Access Jenkins:

Open a web browser and navigate to http://your_server_ip_or_domain:8080. You will be prompted to enter an initial admin password.
- Retrieve the password with:
```
sudo cat /var/lib/jenkins/secrets/initialAdminPassword
```

Step 2: Configure Jenkins with Docker-Compose

Create a Docker Compose file for Jenkins:

version: '3.8'

services:
jenkins:
  image: jenkins/jenkins:lts
  container_name: jenkins
  restart: always # <-- Add restart policy here
  ports:
    - '8004:8080'
    - '50000:50000'
  volumes:
    - jenkins_home:/var/jenkins_home

volumes:
jenkins_home:

Save this content to a file named docker-compose.yml.

Start Jenkins using Docker Compose:
```
sudo docker-compose up -d
```
Verify the Jenkins container is running:
```
sudo docker ps
```

Access Jenkins:

Open a web browser and navigate to http://your_server_ip_or_domain:8080. Retrieve the initial admin password from the container:

sudo docker exec jenkins cat /var/jenkins_home/secrets/initialAdminPassword

docker ps

CONTAINER ID   IMAGE                   COMMAND                  CREATED          STATUS                  PORTS                                                                                      NAMES
7ccfa721451c   jenkins/jenkins:lts     "/usr/bin/tini -- /u…"   13 minutes ago   Up 12 minutes           0.0.0.0:50000->50000/tcp, :::50000->50000/tcp, 0.0.0.0:8004->8080/tcp, :::8004->8080/tcp   jenkins

docker exec -it 7ccfa721451c /bin/bash

cat /var/jenkins_home/secrets/initialAdminPassword

Conclusion

You have successfully installed Docker, Docker Compose, and Jenkins. Additionally, you've set up Jenkins using Docker Compose. You can now start configuring Jenkins for your CI/CD pipelines.

For further customization and plugin installations, refer to the Jenkins documentation.

Posted onToolswith tags:

#Tools #Docker