27.04.2018

jenkins-docker-2step

2 steps to provision an environment with Jenkins, jenkins-job-builder and docker env running cleanly inside a vagrant box.

No more embarrassing git commits when working with Jenkinsfile or jenkins-job-builder!

Steps

vagrant ssh -c "docker build -t yves:2step /vagrant/. ; docker run -u root --rm -d -p 8080:8080 -v /vagrant/jenkins-data:/var/jenkins_home -v /var/run/docker.sock:/var/run/docker.sock  --env JAVA_OPTS='-Dhudson.diyChunking=false -Djenkins.install.runSetupWizard=false' yves:2step"

# once fired up, you should be able to hit the jenkins end point from your browser
# then run the following command to make your jenkins container self configurable as an example

vagrant ssh -c "jenkins-jobs --conf /vagrant/jenkins-job-builder-localhost.ini update /vagrant/seed/autoupdate.yaml"

Fiddling with jenkins-job-builder

# using jenkins-job-builder to test stuff
jenkins-jobs --conf jenkins-job-builder-localhost.ini test seed/autoupdate.yaml

# using jenkins-job-builder to update stuff
jenkins-jobs --conf jenkins-job-builder-localhost.ini update seed/autoupdate.yaml

For fiddling with jenkins

# get the jar file first for the cli to work
wget http://localhost:38080/jnlpJars/jenkins-cli.jar

# login and check stuff
java -jar jenkins-cli.jar -s http://localhost:38080 who-am-i --username admin --password "$(cat jenkins-data/secrets/initialAdminPassword)"

# add a job
# Use jenkins-job-builder or JobDSL and click through the pain. I prefer the former.

# to lint your Jenkinsfile
java -jar jenkins-cli.jar -s http://localhost:38080 declarative-linter < Jenkinsfile

Some pitfalls

• the user in vagrant by default is ubuntu and it is added to the docker usergroup. However, this may not be the case for the the blueocean docker container. So ensure you add -u root to any docker commands whilst within the jenkins container itself.

• turn off security to safe some keystrokes. naturally this is NOT production ready but really more of an exploration. Do this under the "Configure Global Security" section. For example, toggle "Enable CLI over remoting" and "Anyone can do anything" during this exploration.

Author

Yves Hwang http://macyves.wordpress.com