Kubernetes

Kubernetes has its own repository: https://github.com/josealonso/Kubernetes

Install VirtualBox and Vagrant

$ sudo apt install virtualbox 

$ curl -O https://releases.hashicorp.com/vagrant/2.2.9/vagrant_2.2.9_x86_64.deb
$ sudo apt install ./vagrant_2.2.9_x86_64.deb

About the Vagrant project

Five differentes instances are deployed on a local VirtualBox machine:

• Nginx: web server.
• Tomcat: application server (for a Spring Boot app).
• RabbitMQ: message broker.
• Memcached: caching database system.
• MySQL: database.

Command to bring up and provision the five services:

vagrant up

Jenkins Pipeline as a code

• Tools used: Jenkins, Nexus and Sonarqube.

• Running on EC2 instances. Three different instances are needed.

• Different Jenkins plugins are needed.

• Automate pipeline setup with Jenkinsfile.

• Jenkinsfile is a text file with Pipeline DSL Syntax.

• Similar to Groovy.

Pipeline Concepts

• Node/Agent.
• Stage.
• Step.

============= FLOW ==============

1.- Write the Java code locally.

2.- The Jenkins server takes the control: run unit tests and code static analysis on the Sonarqube server.

3.- If the code passes the two steps mentioned above, the Nexus server builds the artifact.

4.- The artifact is deployed on an application server like Tomcat. This deployment is automatic if continuous deployment is configured.

Problem

Operational overhead to maintain servers: Jenkins, Nexus, Sonar, database.

Cloud Services for CI

CI Pipeline on AWS. Services used:

• Code Commit as the Version Control System on AWS.

• Code Artifact as the Maven repository for dependencies.

• Code Build as the Build Service.

• Code Deploy.

• CodePipeline to integrate all jobs together.

The artifact is deployed to a S3 bucket.