/cicd_skeleton

Primary LanguageHCL

Setup Jenkins cluster with containers

  1. Setup Jenkins cluster
  • Spin up jenkins master container from your local home machine
    • docker run -d -p 8080:8080 -v $HOME/jenkins_home:/tmp/jenkins_home --name jenkins_master jenkins/jenkins
      • This will download your "jenkins/jenkins:latest" image
      • Then spiins up a container with name jenkins_master
      • Configure jenkins master from http://192.168.xx.66:8080
    • docker logs jenkins_master # Obtain password
    • Go into GUI first to update your password.
  1. Setup jenkins slaves that will be used(spun up) for provisioning
  • Install the plugin that makes ur jenkins cluster a cluster :)
    • Install docker plugin
      • THIS PLUGIN: This plugin integrates Jenkins with Docker # TODO, find a way to install all of this via cmd
  • Enable docker plugin to communicate over API with the docker host(where your master container is running from) /usr/lib/systemd/system/docker.service ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:4243 -H unix:///var/run/docker.sock sudo systemctl daemon-reload sudo systemctl restart docker
  • GUI Configurations(Always problematic)
    • Navigate to configure system
    • Scroll down to bottom of the page, CLOUD section
    • Add a docker cloud
    • Fill in with below steps
    • Docker Host URI = tcp://172.17.0.1:4243 Enabled = tick this box
    • Add Docker Template (You can have multilpe of this) Labels = random name Eanabled = tick this box Docker image = phelun/jslave_with_awscli_terrform_ansible_packer_gradle_java_jre-jdk:tagname Remote File System Root = /home/jenkins Connect method = Connection with SSH AND non verification strategy
      • Remmeber the just on you dockerfile for the slave image has always being jenkins/jenkins
      • Set SSH credentials to jenkins/jenkins
    • Go to manage nodes from jenkins setting.
      • set master to # of executors = 0 # THis will avoid jobs from running on master node
    • Finally for each job you create, you will need to specify which labels to use
      • Restrict where this project can be run = LABEL_NAME

  1. Configure AWS credentials https://support.cloudbees.com/hc/en-us/articles/203802500-Injecting-Secrets-into-Jenkins-Build-Jobs

  2. Jenkins Best practices https://www.cloudbees.com/blog/top-10-best-practices-jenkins-pipeline-plugin

Build image from container

Aim: - The steps is used for creating a jenkins container, that will be able to build and image from itself. - This will allow us use the jenkins container for build pipeline and deploypipline. - Using label to tell build jobs to use the master container as build - https://getintodevops.com/blog/the-simple-way-to-run-docker-in-docker-for-ci will help you with the steps

apt-get update 
apt-get -y install apt-transport-https ca-certificates curl gnupg2 software-properties-common 
curl -fsSL https://download.docker.com/linux/$(. /etc/os-release; echo "$ID")/gpg > /tmp/dkey; apt-key add /tmp/dkey 
add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/$(. /etc/os-release; echo "$ID") $(lsb_release -cs) stable" 
apt-get update 
apt-get -y install docker-ce