Cluster Bootstrapping Experiment Using Argo CD, App-of-Apps and Sync Waves

An experiment, running locally, to use the App-of-Apps pattern of Argo CD to provision a cluster (the same cluster in this case) while declaring dependencies between the apps using Sync Waves.

Requirements

Docker
kubectl
k3d
just
bash
direnv

Configuration

The configuration is done using .env and argo-cd.yaml.

Usage

Run the experiment:

just run

The run recipe is idempotent.

Inspect the cluster.

Cleanup:

just clean

Structure

.
 app-of-apps.yaml                <-- defines a cluster; one would have one of these per cluster
| app-project.yaml                <-- each cluster should reside in its own Argo CD `AppProject`
 apps                            <-- this chart contains the apps of a cluster including dependencies
   Chart.yaml                         i.e. sync waves, hooks etc. (app-of-apps.yaml points to this chart)
   templates
     istio-operator.yaml
     istio-profile.yaml
   values.yaml
 argo-cd.yaml                    <-- values file for the argo-cd demo deployment
 charts                          <-- this directory simulates a chart musuem to be used 
   istio-profile                      by the Argo CD `Application` resources in the `apps` chart above
      Chart.yaml
      templates
        namespace.yaml
        profile.yaml
      values.yaml
 justfile
 k3d-default.yaml
 kubeconfig
 README.md