DAY 39 - AWS - Red Hat OpenShift for Everyone series ( I - Intro) - Day Thirty-eight

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Red Hat OpenShift Service on AWS - ROSA

Introduction

What is ROSA?

Red Hat OpenShift Service on AWS

ROSA is a fully managed implementation of OpenShift Container Platform deployed and operated on AWS, jointly managed and supported by both Red Hat and AWS.
ROSA integrates seamlessly with a variety of AWS cloud services to help you get started quickly and easily.
ROSA supports the same versions of OpenShift as Red Hat OpenShift Dedicated and OpenShift Container Platform, so you receive updates with each new release.
ROSA is a good choice for organizations that want a fully managed OpenShift experience on AWS, with joint support from Red Hat and AWS

Here is an Over view of ROSA on AWS

Rosa Supported by SRE and cloud engineers

Internet facing Red Hat OpenShift Service on AWS

API ELB - Used for API , both internal and external access.
App/console ELB - for Application console usage

Good news is the Redhat SRE Team also monitors these ELBs.

Lets talk a bit about what are Infra nodes, Compute nodes, Control Plane nodes.

Infra nodes- Managed by SRE from Redhat (registry, Router, Monitoring)
Control Plane Node - Managed by SRE from Redhat (api-server, etcd, controller)
Compute nodes or worker nodes - where our applications run.

Understand that two ELB are public facing

Below diagrams Shows ROSA Architecture Models

AWS VPC Public Network Red Hat Open Shift Service on AWS

AWS VPC private Network Red Hat Open Shift Service on AWS

Only difference here you need to give permissions to SREs to have access to these nodes via a private link.
No data will be going through public internet all will be routed privately.

Must read Documentations

Now Lets get our Hands Dirty

Prerequisite For Rosa

• Install AWS CLI - How to Link
• Install ROSA CLI- To install Goto https://console.redhat.com/openshift/downloads, download and install.
• IAM Account which have right privileges or use STS.

Enable ROSA

• Go TO AWS console and search for Red Hat Openshift Service on AWS
  Clink on to
  

• Goto https://console.redhat.com/openshift/token/rosa , click on to Load Token
  
  Copy this token

• Now on you desktop terminal after configuring your AWS CLI and Rosa CLI, then
  

rosa login

Paste the token here , then enter

• Validating IAM role for the ELB service exists in your AWS account

 aws iam get-role --role-name "AWSServiceRoleForElasticLoadBalancing"

• Validating AWS account quotas for ROSA

 rosa verify quota

Continued on Part Two...........

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AnuvindhFollow

Experienced Cloud Technology Specialist with a demonstrated skillset of working with Banking , Medical Service , NZ Police & Education industry