Argo CD: Configuration Management Using Helm

Argo CD supports a number of Kubernetes configuration management tools, and one of the most popular is Helm. If you have multiple environments, complex applications, dependent services, or just want to abstract away your Kubernetes manifests, Helm is a great choice.

Alternatives to Helm include Ksonnet and Kustomize. The first is deprecated, and the second is natively supported by kubectl and also supported by Argo CD. You can also write your own configuration management plugin and use it as part of your workflow.

We already have a subfolder in the same GitHub repository that contains a Helm chart ready to use.

cd $HOME/argocd-helm-example
# List the contents of the flask-app-helm folder
tree flask-app-helm

These are the files in the flask-app-helm folder:

flask-app-helm
├── Chart.yaml
├── templates
│   ├── _helpers.tpl
│   ├── deployment.yaml
│   └── service.yaml
└── values.yaml

Here is how to deploy it using an Application:

kubectl apply -f - <
---
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: flask-app
  namespace: argocd
spec:
  destination:
    namespace: flask-app
    server: https://kubernetes.default.svc
  project: default
  source:
    repoURL: https://github.com/$GITHUB_USERNAME/argocd-helm-example-bis
    targetRevision: main
    path: flask-app-helm
    helm:
      valueFiles:
        - values.yaml
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
      allowEmpty:

Helm in Practice

Designing, Deploying, and Operating Kubernetes Applications at Scale

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