Architecture

Below is an architecture schema displaying which components are instantiated when using the DevOps Stack on EKS:

architecture

The steps are:

  1. the user instantiates the eks/aws Terraform module, passing parameters

  2. the eks/aws module instantiates:

    • the terraform-aws-modules/eks/aws public module to set up the EKS cluster

    • the argocd-helm internal module to install and configure Argo CD. This step adds app-of-apps values via a values.tmpl.yaml template to the optional user values passed through the app_of_apps_values_overrides parameter.

  3. the argocd-helm module instantiates two Helm charts:

    • the argocd chart, which sets up an Argo CD application deploying the argocd public chart

    • the app-of-apps chart, which manages the apps application. This step adds app-of-apps values via a new values.tmpl.yaml template.

  4. the apps Argo CD application manages all the Argo CD applications:

    • the apps application itself

    • argocd

    • kube-prometheus-stack

    • cert-manager

    • …

    • an extra-apps application for user-defined applications