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Big Bang Deployment: Uninstall & Cleanup Guide📜

This guide explains how to remove your Big Bang deployment—including all Helm releases, namespaces, persistent data, and custom resources—from your Kubernetes cluster.

Note: There may be potential items that will need to be removed manually if the helm commands failes to delete them. Please check the namespaces for any of these items. * services * configmap * secret * serviceaccount * lease * clusterrolebinding * clusterrole

1. Uninstall the Big Bang Helm Release📜

helm uninstall bigbang -n bigbang

2. Delete the Big Bang Namespace📜

kubectl delete namespace bigbang

3. Remove FluxCD Resources📜

flux uninstall –namespace=flux-system –silent kubectl delete namespace flux-system

4. Delete Other Namespaces Created by Big Bang Packages📜

Check for and delete any additional namespaces (e.g., istio-system, keycloak, gitlab, etc.):

kubectl get namespaces kubectl delete namespace

5. Remove Stuck Namespaces (if any)📜

If a namespace is stuck in “Terminating”, remove its finalizers:

kubectl get namespace -o json | \ jq ‘.spec.finalizers = []’ | \ kubectl replace –raw “/api/v1/namespaces//finalize” -f -

Or use the helper script if available:

https://repo1.dso.mil/big-bang/bigbang/-/blob/master/scripts/remove-ns-finalizer.sh

6. Delete Persistent Volume Claims and Persistent Volumes📜

kubectl get pvc –all-namespaces kubectl delete pvc -n kubectl get pv kubectl delete pv

7. Remove Custom Resource Definitions (CRDs)📜

To remove CRDs installed by Big Bang or its packages:

kubectl get crd | grep -E ‘istio|keycloak|gitlab|neuvector|anchore’ | awk ‘{print $1}’ | xargs kubectl delete crd

8. Verify Cleanup📜

Check for any remaining resources:

kubectl get all –all-namespaces kubectl get namespaces

Delete any remaining resources as needed.

Note:
If you used additional override files or installed extra components, ensure you remove their resources and namespaces as well.

Cluster Resource Stats (Example)📜

  • Pods:
    kubectl get pods --all-namespaces | wc -l

  • Namespaces:
    kubectl get namespaces | wc -l

  • Persistent Volume Claims:
    kubectl get pvc --all-namespaces | wc -l

  • Persistent Volumes:
    kubectl get pv | wc -l

  • Custom Resource Definitions:
    kubectl get crd | wc -l

References📜