DO120

Course description

Learn how to deploy, access, and perform basic customizations to a ROSA cluster.

This course teaches Platform Operators how to provision managed clusters by using Red Hat OpenShift Service on AWS (ROSA) and how to perform basic day-2 customizations on these clusters to onboard application developers and applications.

Course content summary

• Introduction to Managed OpenShift
• Identify prerequisites to create and deploy a ROSA cluster
• Access a ROSA cluster as an administrator and as a developer self-service user
• Connect a ROSA cluster to Red Hat Services
• Configure additional storage classes and configure log forwarding to AWS CloudWatch
• Create dedicated node pools and configure node autoscaling

Target Audience 

• System administrators, platform operators, and cloud engineers.
• Enterprise and cloud-native application developers.
• Application and development infrastructure professionals such as site reliability engineers and DevOps engineers.

Recommended training

• All students must be knowledgeable of Amazon Web Services (AWS), including operating and managing AWS compute, storage, and network resources.
• For students that are new to Red Hat OpenShift it is recommended that you learn the fundamental skills of managing Red Hat OpenShift clusters, before taking DO120, from the following courses:
  • Red Hat OpenShift I: Containers & Kubernetes (DO180)
  • Red Hat OpenShift Administration II: Operating a Production Kubernetes Cluster (DO280)
• Students with previous experience managing Kubernetes clusters are advised to take DO180 and DO280 before taking DO120 or at least acquire foundational skills operating Red Hat OpenShift clusters by using the following free resources from Red Hat:
  • Red Hat Developer Sandbox for OpenShift
  • OpenShift and Kubernetes learning from Red Hat Developer
  • Containers, Kubernetes and Red Hat OpenShift Technical Overview (DO080)

Technology considerations

• Internet access is required to access AWS cloud services using the AWS console and the AWS CLI. It is also required to access the Red Hat Hybrid Cloud Console and associated Red Hat cloud services.
• Students must possess an active AWS account with permission to activate services from the AWS Marketplace and an associated payment method for the AWS resources consumed by ROSA clusters.
• Students must possess an active Red Hat customer portal account or a free Red Hat Developer program membership.

Outline for this course

Provision a Red Hat OpenShift Service on AWS (ROSA) Cluster

Create a Red Hat OpenShift Service on AWS (ROSA) cluster accessible through the internet.

• Introduction to Managed OpenShift Clusters
• Describe the relationship between the customer team and the cloud vendor’s SRE team to administer managed OpenShift clusters.
• Prerequisites to Create a ROSA Cluster
• Prepare an AWS account and a management workstation to create a ROSA cluster.
• Create a ROSA Cluster
• Create an internet-accessible ROSA cluster by using the CLI.
• Access a ROSA Cluster as Administrator
• Create OpenShift cluster administrator credentials to access a managed cluster by using the OpenShift CLI, OpenShift Web Console, and Kubernetes CLI.

 

Configure a Red Hat OpenShift Service on AWS (ROSA) Cluster

Configure a Red Hat OpenShift Service on AWS (ROSA) cluster to be used for development purposes.

• Configure Developer Self-service for a ROSA Cluster
• Configure an identity provider that enables developers to access a managed cluster and self-service projects to deploy unprivileged applications.
• Connect a ROSA Cluster to Red Hat Services
• Connect a managed cluster to Red Hat cloud services and enumerate the benefits.
• Configure Additional Storage Classes
• Connect applications to the EBS volume types that match their cost and performance requirements.
• Create Dedicated Node Pools
• Add node pools to run applications by using different EC2 instance types.
• Configure Node Autoscaling
• Autoscale a node pool based on application load.
• Configure Log Forwarding
• Forward cluster and pod logs to AWS CloudWatch.

Impact on the organization

Red Hat® OpenShift® Service on AWS (ROSA) is a turnkey application platform that provides a managed Red Hat OpenShift service running natively on Amazon Web Services (AWS) allowing organizations to increase operational efficiency, refocus on innovation, and quickly build, deploy and scale applications. 

Red Hat OpenShift is the hybrid cloud platform that brings operational consistency to on-premises and cloud environments. Organizations using ROSA follow the same operational processes used by a self-managed Red Hat OpenShift Container Platform on their on premises data centers and deploy the same applications on any OpenShift cluster, be it a managed cluster or a self-managed one.

Impact of this training

After completing DO120, students can create ROSA clusters. Most day-to-day application and cluster administration tasks are performed the same way across Red Hat OpenShift products, so IT professionals apply the same skills in managing Red Hat OpenShift clusters to both cloud and on-premise environments.

Recommended next exam or course

After completing DO120, students can proceed to additional operations and development training on Red Hat OpenShift, such as:

• Red Hat OpenShift Development II: Containerizing Applications (DO288)
• Red Hat OpenShift Administration III: Scaling Kubernetes Deployments in the Enterprise (DO380)
• Multicluster Management with Red Hat OpenShift Platform Plus (DO480)