Jenkins playground

Setup

prereq

• Download Jenkins install
• Setup Jenkins
• Check JAVA_HOME & PATH for java - java --version
• Install Jenkins: - download, (homebrew is required).

Jenkins setup local

Run jenkins with brew - commands are available in Makefile.

• View Jenkins dashboard: open http://localhost:8080
• set admin password: pw=$(cat ~/.jenkins/secrets/initialAdminPassword) && echo "export JENKINS_ROOT_PASSWORD=\"$pw\"" >> .env.
• get pw: cat ~/.jenkins/secrets/initialAdminPassword| pbcopy
• create user

Jenkins setup docker containers

3 containers are required: jenkins-docker (Execute docker cmds inside jenkins nodes), jenkins-blueocean (jenkins controller,UI), agent (jenkins agent/nodes to run tasks)

• Steps

# Run docker container to :dind
docker network create jenkins

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 \
  --storage-driver overlay2

# Build image

docker build -t myjenkins-blueocean:2.492.2-1 .
## View build details: docker-desktop://dashboard/build/desktop-linux/desktop-linux/22ia4w6rtdnka4nhtkf262ceu

# Run myjenkins-blueocean:2.492.2-1 container
docker run \
  --name jenkins-blueocean \
  --restart=on-failure \
  --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:2.492.2-1

# Login and setup user

docker exec jenkins-blueocean cat /var/jenkins_home/secrets/initialAdminPassword | pbcopy

open http://localhost:8080/

Setup node/agent instead of running tasks in controller

# Create ssh key and jenkins docker agent to run on the same network
## https://www.jenkins.io/doc/book/using/using-agents/
# https://github.com/jenkinsci/docker-ssh-agent

# Create ssh key

docker run -d --rm --name=agent --publish 2200:22 --network=jenkins -e "JENKINS_AGENT_SSH_PUBKEY=$(cat ~/.ssh/jenkins_agent_key.pub)" jenkins/ssh-agent 


docker container inspect agent | grep '"IPAddress"'

#  Configure agent

## http://localhost:8080/computer/agent/
## http://localhost:8080/computer/agent/log

# Run job with agent
## http://localhost:8080/job/job-for-agent/1/console