Codestellar

# Jenkins: Getting Started

What was the problem?

I wanted to set up my own CI Server as CI servers have minutes limit. Bitbucket has 50 min/month, Azure DevOps has 240 min/month, AWS Pipeline is paid.

What was the solution?

I chose Jenkins as I can install it on my own server, had some initial problems like setting up the password, re-installations, containerizing. So, I summed it up here.

Recently, I installed Jenkins on my ubuntu server, I read the documentation here and here are the steps I followed:

  • Installed Docker
  • Create a Docker Network
docker network create jenkins
  • To confirm that a network has been created, run:
docker network list
  • In order to be able to run docker commands inside jenkins nodes, install docker:dind image as follows:
docker run --name jenkins-docker --rm --detach \
  --privileged --network jenkins --network-alias docker \
  --env DOCKER_TLS_CERTDIR=/certs \
  --volume jenkins-docker-certs:/certs/client \
  --volume jenkins-data:/var/jenkins_home \
  --publish 2376:2376 docker:dind
  • Customise official Jenkins Docker image, by executing below two steps:
    • Create a docker file:
    FROM jenkins/jenkins:2.263.3-lts-jdk11
USER root
RUN apt-get update && apt-get install -y apt-transport-https \
    ca-certificates curl gnupg2 \
    software-properties-common
RUN curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
RUN apt-key fingerprint 0EBFCD88
RUN add-apt-repository \
    "deb [arch=amd64] https://download.docker.com/linux/debian \
    $(lsb_release -cs) stable"
RUN apt-get update && apt-get install -y docker-ce-cli
USER jenkins
RUN jenkins-plugin-cli --plugins blueocean:1.24.4
    • Build the image:
    docker build -t myjenkins-blueocean:1.1 .
  • Run your image as container:
docker run \
  --name jenkins-blueocean \
  --rm \
  --detach \
  --network jenkins \
  --env DOCKER_HOST=tcp://docker:2376 \
  --env DOCKER_CERT_PATH=/certs/client \
  --env DOCKER_TLS_VERIFY=1 \
  --publish 8080:8080 \
  --publish 50000:50000 \
  --volume jenkins-data:/var/jenkins_home \
  --volume jenkins-docker-certs:/certs/client:ro \
  myjenkins-blueocean:1.1
  • Once you have run the container, please note that you have your jenkins files available in a docker volume. So, run the following commands to realize the same:
docker volume list
  • Now that you have the container active, run:
docker ps -a
  • Get the initial password:
docker exec <container_name_or_id> cat /var/jenkins_home/secrets/initialAdminPassword

To run bash commands inside your container

docker exec -it <container_name_or_id> bash

WARNING

Simply removing the container and images does not remove the volume

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