To setup jenkins, i used an ubuntu server. The t2.small instance was too small to run jenkins properly thus i had to use t2.medium. Then i installed the dependencies, including common elements docker and golang.
I created a main.tf file and cloud-init.sh file, using the previous week's terraform modules. Now i can reproduce the instance with just a single command! The main.tf and cloud-init.sh files can be found on: https://codeberg.org/boink/cloud-scripts/src/branch/master/week-5
To use docker, you'll need the docker and docker pipeline plugins. Docker must also be installed on the host system.
I used my previous work on ec2 instances where it automatically addresses the ip-address and gets a domain mapping. Then, using caddy and letsencrypt, the certificates are downloaded and served over https! You can find the site on https://ec2.ashwink.com.np
You can use jenkins without an api from github, but if you're working with github, then the api limits become really painful really quick. Thus, it's better to setup a github app and use it's api. It also enables you to get automatic updates when you push to a repo, creating seamless experienec! The guide to integrate jenkins with github is on: https://github.com/jenkinsci/github-branch-source-plugin/blob/master/docs/github-app.adoc
