Pods are not deleted after Deployment is deleted in my Kubernetes Cluster

Question

After deployment, the pods, replicaset, and deployment are created successfully. However, when I try to delete the Deployment using kubectl delete deploy nginx-deployment, the pods and replicaset are not deleted.

My deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  selector:
    matchLabels:
      app: nginx
  replicas: 2 # 
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.14.2
        ports:
        - containerPort: 80

I have also tried kubectl delete deploy nginx-deployment --cascade=background, but the issue persists. How should I proceed to ensure that the ReplicaSet and Pods are properly deleted when the Deployment is deleted?

Used software:

• Kubernetes 1.27.2
• Installed on Ubuntu 20.04.4 LTS
• calico 3.26.0
• containerd 1.6.24

Answer 1

This issue was solved by updating the calico version. Seems that there is an incompatibility issue.

Answer 2

Im sure you are deleting something that does not exists on the current name space. Do this:

1-get the deployment and its namespace

kubectl get deployments --all-namespaces

2-pass the namespace to the delete

kubectl delete -n NAMESPACE deployment nginx-deployment