limberger / devops-testing

Example application for the DevOps Testing webminar

Currency Exchange application

This application serves as an example for the DevOps Testing webminar demo.

• Frontend
• Exchange (Gateway)
• History
• Currency

Install Jenkins on OpenShift

You must install Jenkins on OpenShift.

Create a project for the Jenkins deployment:

oc new-project YOUR-JENKINS-PROJECT

Create a new Jenkins application using the jenkins-ephemeral template.

oc new-app openshift/jenkins-ephemeral -p MEMORY_LIMIT=2048Mi

The jenkins-ephemeral template does not persist data. If you restart the Jenkins pod, you will lose data. Use the jenkins-persistent template to persist your Jenkins data.

Jenkins agents

This demo uses Jenkins on OpenShift, which requires Jenkins Agents to run specific runtimes.

To create Node.js agent, run:

oc process -f jenkins/jenkins-agent-template.yml  -p NAME=jenkins-agent-node-14 -p SOURCE_CONTEXT_DIR=jenkins/node14 | oc apply -f -

For the Python agent, run:

oc process -f jenkins/jenkins-agent-template.yml  -p NAME=jenkins-agent-python-3 -p SOURCE_CONTEXT_DIR=jenkins/python3 | oc apply -f -

For Cypress:

oc process -f jenkins/jenkins-agent-template.yml  -p NAME=jenkins-agent-cypress -p SOURCE_CONTEXT_DIR=jenkins/cypress | oc apply -f -

Deployments in a test environment (for branches)

This example uses a test environment to make deployments specific to branches. Each branch generates will generate its own deployments

Create the test project:

oc new-project YOUR-TEST-PROJECT

Allow Jenkins to deploy to this project:

oc policy add-role-to-user edit system:serviceaccount:YOUR-JENKINS-PROJECT:jenkins -n YOUR-TEST-PROJECT

Deployments in a stage (or prod) environment

Create the stage project:

oc new-project YOUR-STAGE-PROJECT

Allow Jenkins to deploy to this project:

oc policy add-role-to-user edit system:serviceaccount:YOUR-JENKINS-PROJECT:jenkins -n YOUR-STAGE-PROJECT

How to create the deployments in OCP

You need to create the deployments before running the Jenkins pipeline.

• Currency service:

oc new-app --name currency \
https://github.com/GITHUB_USER/devops-testing \
--context-dir=currency \
--strategy=docker

oc expose svc/currency

• History service:

oc new-app --name history \
https://github.com/jramcast/devops-testing \
--context-dir=history \
--strategy=docker

oc expose svc/history

• Exchange service:

oc new-app --name exchange \
https://github.com/jramcast/devops-testing \
--context-dir=exchange

oc expose svc/exchange

• News service (optional):

oc new-app --name news \
https://github.com/jramcast/devops-testing \
--context-dir=news \
--strategy=docker

oc expose svc/news

• Web application:

oc new-app --name frontend \
https://github.com/jramcast/devops-testing \
--context-dir=frontend \
--strategy=docker

oc expose svc/frontend