argocd-demo

Tools:

• required:
  • kubectl: brew install kubernetes-cli
  • helm: brew install helm
• optional:
  • kubectx: brew install kubectx
  • fzf: brew install fzf

Workflow

1. Develop in the test cluster using a branch
2. Stop the application and the test cluster
3. Change the targetRevision with the commit (optional: rebase)
4. Merge PR

Repository secrets

There are two ways to add the correct credentials to the repository:

• use the Argo CD UI
• use the repository.yaml

If you want to deploy secrets with the code, the suggested way is to

• generate a token in your Github/Gitlab account
• uncomment the secrets part of the repository.yaml
• change the username and password (token)
• use kubectl apply ... command (it will be otherwise applied in the below steps automatically)

Steps

1. Make sure to select the correct kubernets cluster: kubectx
2. Install our helm chart:

   helm repo add argo https://argoproj.github.io/argo-helm
   helm upgrade --install -n argocd --create-namespace argo-cd argo/argo-cd

3. Apply Bootstrap file:

   kubectl -n argocd apply -f bootstrap

4. Retrieve password for Argo CD UI (command displayed after the above command):

   kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d

5. Use portforwarding to access ArgoCD:

   kubectl -n argocd port-forward svc/argo-cd-argocd-server  8080:80

FAQ

How do you stop the local stack?

Basically, you can uninstall the helm chart:

helm uninstall argo-cd -n argocd

In order to verify, that no resources are still blocked by any ghost applications, check the list of all or specific workspaces:

kubectl get all -A 
kubectl get all -n NAMESPACE

If there are any apps still running, use the advice above to remove everything from a namespace.

---

After a delete, there are still some pods running

In order to remove everything from a certain namespace (assume, everything for one application is in one namespace):

kubectl delete all --all -n NAMESPACE

---

Application stuck in deletion

https://stackoverflow.com/questions/71164538/argocd-application-resource-stuck-at-deletion

kubectl patch app APP_NAME -n argocd -p '{"metadata": {"finalizers": null}}' --type merge