My study notes for Red Hat EX280 Certification (Openshift 4.12)

Here are some relevant tasks for the Red Hat EX280 Certification Exam.
So that you know, this project only covers some topics in the exam. I have included exercises found here for my study purposes.

• Manage OpenShift Container Platform
  Solution

• Deploy applications applications that can access secrets with key/val accessible via environment variables in pod
  create app with deployment->add service->expose route (edge) create app via deployment add service to deployment
  create route to service (edge?)

• Manage storage for application configuration and data create pv->pvc ReadOnlyOnce Challenge
  Solution

• Configure applications for reliability (liveliness probe) Challenge
  Solution

• Manage authentication and authorization
  Challenge
  Solution

• Configure network security (edge with cert/key and maybe CA cert?) Challenge
  Solution

• Enable developer self-service create a default project template with a limit range (max-min-default-request) make that the default setting when someone creates a new project
  Challenge
  Solution

• Manage OpenShift operators

• Configure application security (source pod selector with deployment label and added label [name=value]) port access as well Challenge
  Solution

• Quotas - Resource Limits - Scale - Autoscale
  Challenge
  Solution

• cron jobs in OpenShift (at a certain time on x day of month) add service account to job? Challenge
  Solution

My lab environment consists of a mix of Red Hat Code Ready Containers (CRC) and the lab environment provided by DO280R.

My CRC environment is on OpenShift 4.13, and I found that the procedure for removing the kubeadmin account differs from 4.12 in the DO280 lab environment.

Although all of these can be run on your CRC environment, the DO280 lab environment has some of the images I use to deploy, as well as NFS, set up ahead of time for testing Persistent Volume Claims (PVC) and some of the certs created for network security exercises.

Topics not covered here that you should still study for

• Install a Helm chart and deploy an app with it
• associate key/value secret for application
• LimitRanges
• install openshift operators
• Create a default project template file and enable it for all users