jenkins-infra

This is a rough skeleton of the ansible used to deploy RISELab/Apache Spark Jenkins build workers on Ubuntu 20LTS.

WARNING: this will not work “directly out of the box” and will need to be tweaked to work on any ubuntu servers you might want to try this on.

deploy a new worker node

TL;DR:

all of the configs for the workers live in roles/common/... and roles/jenkins-worker...

prereqs:

• fresh install of ubuntu 20
• a service account w/sudo
• python 3, ansible, ansible-playbook installed locally
• add hostname(s) to the hosts file
• add this to your ~/.ansible.cfg: [defaults] host_key_checking = False

fire ansible cannon!

ansible-playbook -u <service account> deploy-jenkins-worker.yml -i <ansible-style-hosts-file> -k -b -K

tips:

• if you are installing more than a few workers, it‘s best to run the playbook on smaller (2-3) batches at a time. this way it’s easier to track down errors, as ansible is very noisy.
• when you encounter an error, you should comment out any previously-run plays and tasks. this saves time when debugging, and let's you easily track where you are in the process.
• apt-get remove <application_name> and apt-get purge <package-name> are your friends