This preparation guide is written for Red Hat Certified Specialist in OpenShift Administration exam for OpenShift V4.6.

• Exam format: task based. The exam itself contains a set of tasks (16) that you have to perform, which represents the tasks for an OpenShift administrator.

• Exam duration: 3 hours

• Exam passing grade: 70% - you must got 12 questions right out of 16.

• Note that partial completion of a question is not counted as a correct answer

These objectives was retrieved from https://www.redhat.com/en/services/training/ex280-red-hat-certified-specialist-in-openshift-administration-exam?section=Objectives.

To become a Red Hat Certified Specialist in OpenShift Administration, you should be able to perform these tasks:

• Manage OpenShift Container Platform
  • Use the command-line interface to manage and configure an OpenShift cluster
  • Use the web console to manage and configure an OpenShift cluster
  • Create and delete projects
  • Import, export, and configure Kubernetes resources
  • Examine resources and cluster status
  • View logs
  • Monitor cluster events and alerts
  • Troubleshoot common cluster events and alerts
  • Use product documentation
• Manage users and policies
  • Configure the HTPasswd identity provider for authentication
  • Create and delete users
  • Modify user passwords
  • Modify user and group permissions
  • Create and manage groups
• Control access to resources
  • Define role-based access controls
  • Apply permissions to users
  • Create and apply secrets to manage sensitive information
  • Create service accounts and apply permissions using security context constraints
• Configure networking components
  • Troubleshoot software defined networking
  • Create and edit external routes
  • Control cluster network ingress
  • Create a self signed certificate
  • Secure routes using TLS certificates
• Configure pod scheduling
  • Limit resource usage
  • Scale applications to meet increased demand
  • Control pod placement across cluster nodes
• Configure cluster scaling
  • Manually control the number of cluster workers
  • Automatically scale the number of cluster workers

Mem:

• Identity Provider
• Access to project using RBAC
• ResourceQuota
• LimitRange for project
• Secret as Environment Viable
• Manual scale and autoscaling with cpu/mem limit
• Route and Secure Route
• SCC
• User and Group
• Taint and Toleration
• Node selector
• CRIO error: deployment not ready

• Describe the Red Hat OpenShift Container Platform cluster installation and update processes
• Troubleshoot application deployments
• Configure authentication using local users
• Control access to projects using role-based access control (RBAC)
• Expose applications to clients external to the cluster using TLS encryption
• Configure network isolation between services and applications using network policies
• Configure network isolation between services and applications using network policies
• Configure application scheduling using labels and selectors
• Limit compute resource usage of applications with resource limits and quotas
• Manage a cluster and deployed applications with the Web Console
• Install Kubernetes Operators with the Web Console