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OpenShift modern availability

This is a step by step tutorial to deploying stateful applications with high-availability and zero downtime DR (RTO,RPO~>0). You will need a cluster and the ability to spawn new ones. This tutorial works on AWS, but the concepts may be reused everywhere.

The resulting deployment will looks as this:

High Level Architecture

This tutorial is comprised of the following steps:

  1. cluster preparation

    This will result in deploying the following cluster preparation

  2. establishing trust between the clusters

    This step requires having previously executed cluster preparation step.

    The result of this step is the following: estabilishing trust

  3. deploying cockroachdb

    This step requires having previously executed establishing trust step.

    The result of this step is the following: deploying cockroachdb

  4. deploying keycloak

    This step requires having previously executed deploying cockroachdb step.

    The result of this step is the following: deploying keycloak

  5. deploying kafka

    This step requires having previously executed establishing trust step.

    The result of this step is the following: deploying kafka

  6. deploying YugabyteDB

    This step requires having previously executed establishing trust step.

    The result of this step is the following: deploying yugabyteDB