Shell Script to install Jenkins at Ubuntu

jenkins.md

Jenkins

Install

Execute the shell script: jenkins_install.sh

Configure a proxy using nginx or apache to http://ci.company.example.com.br(I'll use this URL as example).

Configure credentials

• http://ci.example.com.br/credential-store/domain/_/newCredentials

Configure plugins:

• Add Github Plugin, Multi-Branch Project Plugin, AnsiColor Plugin, Slack Plugin and Embeddable Build Status at http://ci.example.com.br/pluginManager/available

Configure Shell section setting Shell executable

• Use /bin/bash at http://ci.example.com.br/jenkins/configure

Configure GitHub Webhooks

• Navigate to Webhooks & Services under Settings on the GitHub repository page https://github.com/:company/:projet/
• Click Configure services and select the Jenkins (GitHub plugin) option
• Enter the address to your Jenkins server http://ci.example.com.br/github-webhook/, check Active and update your settings.
• Try it out by pushing a commit to GitHub and verifying that a new build is triggered in Jenkins

Create a new build configuration

• Access http://ci.example.com.br/view/All/newJob

• Add new item (Build a free-style multi-branch project)

  GitHub project: fill with https://github.com/:company/:projet/

  Execute concurrent builds if necessary check this options

  Source Code Management:

  Sync Branches Schedule: H/2 * * * * (every two minutes)

  Git check this option

  Repository URL: fill with git@github.com:company/project.git

  Credentials: select company-credentials or the name specified at Configure credentialsstep

  Include branches: fill with * to include all branchs

  Build Triggers:

  Check Build when a change is pushed to GitHub

  Build Environment:

  Check Color ANSI Console Output and select xterm from ANSI color map

  Build (Execute shell):

  #!/bin/bash
  cp /var/lib/jenkins/sample_database.yml config/database.yml
  
  function clean_up {
    RAILS_ENV=test bundle exec rake db:drop
    
    exit $1
  }
  
  rvm use 2.2.1 --install
  rvm info
  ruby --version
  
  gem install bundler --no-rdoc --no-ri
  bundle install
  
  RAILS_ENV=test bundle exec rake db:create:all
  RAILS_ENV=test bundle exec rake db:migrate
  RAILS_ENV=test bundle exec rake db:test:prepare
  
  trap clean_up SIGHUP SIGINT SIGTERM
  
  SPEC_OPTS="--no-drb --format documentation"
  
  bundle exec rspec spec
  
  # Capture value returnd by last command
  rspec_status=$?
  
  clean_up $rspec_status
  

Rspec configuration

To get RSpec colours working in Jenkins you have to specify the following in the RSpec configuration block:

  RSpec.configure do |config|
   config.tty = true
  end

This is because the Jenkins shell is a pseudo TTY.

Slack Integration

To configure integration with Slack https://company.slack.com/services/new/jenkins-ci

jenkins_install.sh

#!/usr/bin/env bash
# This script install Jenkins in your Ubuntu System
#
# This script must be run as root:
#   $ sudo ./jenkins_install.sh

if [[ $EUID -ne 0 ]]; then
	echo "This script must be run as root" 1>&2
	exit 1
fi

# Install the necessary packages to prepare the environment
sudo apt-get install autoconf bison build-essential libffi-dev libssl-dev
sudo apt-get install libyaml-dev libreadline6 libreadline6-dev zlib1g zlib1g-dev curl git vim

# Install PhantomJS (http://phantomjs.org/build.html)
## First install the necessary packages
sudo apt-get install g++ flex gperf ruby perl libsqlite3-dev libfontconfig1-dev
sudo apt-get install libicu-dev libfreetype6 libssl-dev libpng-dev libjpeg-dev

## Then build PhantomJS
cd /usr/local/share
git clone git://github.com/ariya/phantomjs.git
cd phantomjs
git checkout 1.9
./build.sh

## Then provide phantomjs to system
## to check the version of phantomjs user: $ phantomjs --version
sudo ln -sf /usr/local/share/phantomjs/bin/phantomjs /usr/local/bin

# Install Jenkins
## Before install is necessary to add Jenkins to trusted keys and source list
wget -q -O - http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add -
sudo sh -c 'echo deb http://pkg.jenkins-ci.org/debian binary/ > /etc/apt/sources.list.d/jenkins.list'
sudo apt-get update
sudo apt-get install jenkins

# Install and Configure Mysql to Jenkins
## Install the necessary packages (I used password: root)
sudo apt-get install mysql-client libmysqlclient-dev mysql-server

## Add user to jenkins
## You can check if user was created using: SELECT User FROM mysql.user;
mysql --user=root --password=root -e \
  "CREATE USER 'jenkins'@'localhost' IDENTIFIED BY 'jenkins';
   GRANT ALL PRIVILEGES ON * . * TO 'jenkins'@'localhost';
   FLUSH PRIVILEGES;\q"

# Create sample_database.yml
## BUIL_TAG is a String of "jenkins-${JOB_NAME}-${BUILD_NUMBER}":
##   - JOB_NAME=company-branch
##   - BUILD_NUMBER=99
##   - BUIL_TAG=company-branch-99
sudo touch /var/lib/jenkins/sample_database.yml
sudo chmod 755 /var/lib/jenkins/sample_database.yml

cat <<EOT >> /var/lib/jenkins/sample_database.yml
default: &default
  adapter: mysql2
  username: 'jenkins'
  password: 'jenkins'
  host: 'localhost'
  pool: 100
  encoding: utf8
  reconnect: true

test:
  <<: *default
  database: <%= "sample-test-#{ENV['BUILD_TAG']}" %>
EOT

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