Story (Required)

Document new HA mode in OpenShift docs.

Acceptance Criteria (Mandatory)

• In the OpenShift GitOps docs, in the 'Using Argo Rollouts for progressive deployment delivery' page (https://docs.openshift.com/gitops/1.14/argo_rollouts/using-argo-rollouts-for-progressive-deployment-delivery.html#gitops-creating-rolloutmanager-custom-resource_using-argo-rollouts-for-progressive-deployment-delivery)
  • A brief description of why it can be beneficial to enable HA
  • We should add a new section which describes how to how to high availability mode for Argo Rollouts, by modifing '.spec' field of 'RolloutsManager' CR
  • We should add a new 'Procedure:' which modifies the RolloutManager '.spec' to enable HA, then verifies that rollouts deployment is now running with 2 replicas.
• Write draft doc for above, and work with doc folks to get this into OpenShift docs