Desperado / dockered_jenkins

Docker configuration to build jenkins master and jenkins slave in euphermal container

dockered_jenkins

Ephemeral Build Slaves using Jenkins and Docker

This repo all the files necessary to create your own local Docker-Toolbox version of a fully ephemeral jenkins environment. Build slaves are designed to be docker containers in this configuration. The only thing missing to make it work is your Docker Machine certs (see directions below on how to add these).

Quick Start

1. Make sure you have all the pre-reqs installed (i.e. Docker-toolbox) Ubuntu install is here https://docs.docker.com/engine/installation/linux/ubuntulinux/
2. Clone this repository to your local drive
3. Find the docker-machine folder container your 4 client pem keys (ca-key.pem, ca.pem, key.pem, cert.pem). Mine for example, is in ~/.docker/machine/certs.
4. cp -R yourdockermachinecertsfolder jenkins-master/certs
5. make build
6. make run
7. Point your browser to http://yourdockermachineip
8. In jenkins, configure a ssh-key pair using an ssh private key for the user "jenkins". As the private key, use the file in jenkins-slave/files/dummy_private_rsa_key
9. In jenkins, configure a Docker Certificates Directory credential using /usr/local/etc/jenkins/certs as the source directory
10. In jenkins configuration, add a new Docker cloud provider
11. Set host to https://yourdockermachineip:2376
12. Select the docker certificates directory you made
13. Set read timeout to 5
14. set connection timeout to 15
15. Click on "Test Connection" and make sure you get a valid response
16. In jenkins config on your new Docker cloud add a Docker template
17. Set the image name to: jenkins_slave
18. Create a label "testslave"
19. Make sure credentials are your new ssh key pair you made above
20. Click "Save"
21. Create a new free-style jenkins job
22. Restrict the job to the label "testslave"
23. Add a build step, like execute shell "echo 'Hello World!'"
24. Save job
25. Run job

If everything is configured correctly your job should dynamically allocate a slave, run itself and then de-allocate the slave.

Jenkins-slave

A docker image to be used for Jenkins testing

This image provides

• Languages
  • JDK 1.7, 1.8 / Maven 3.3.4
  • Node 0.10.24 via nvm
  • Ruby 2.2.4 via RVM
• Services
  • Postgres 9.3
  • Xvfb
• Browsers
  • Firefox
  • Chrome-beta
  • Chromium

Environment Variables

• JAVA_OPTS, Default: -Xmx2G -Xms2G -XX:PermSize=256M -XX:MaxPermSize=256m
• DISPLAY, Default :10
• XVFB_SCREEN_SIZE, Default 1024x768x24

Examples

BUILD_TAG and WORKSPACE are jenkins environment variables.