Method 1 – Delete container. kubernetes will restore it with settings

kubectl delete pod -n=kube-system coredns-fb8b8dccf-8ggcf

Method 2 – Scale Down and scale up deployment

kubectl scale deployment <<name>> --replicas=0 --n <<namespace>>

kubectl scale deployment <<name>> --replicas=1 --n <<namespace>>

Example method 2

kubectl scale deployment zipkin --replicas=0 -n monitoring
kubectl scale deployment zipkin --replicas=1  -n monitoring

kubectl scale deployment github-actions-runner-operator --replicas=0 -n github-actions-runner-operator --all
kubectl scale deployment github-actions-runner-operator --replicas=1 -n github-actions-runner-operator --all

 

Example 3

Scale all statefulsets and deployments under the namespace

kubectl scale statefulset,deployment -n github-actions-runner-operator --all --replicas=0
kubectl scale statefulset,deployment -n github-actions-runner-operator --all --replicas=1