'How to delete all resources from Kubernetes one time?

Include:

  • Daemon Sets
  • Deployments
  • Jobs
  • Pods
  • Replica Sets
  • Replication Controllers
  • Stateful Sets
  • Services
  • ...

If has replicationcontroller, when delete some deployments they will regenerate. Is there a way to make kubenetes back to initialize status?

kubernetes


Solution 1:[1]

Method 1: To delete everything from the current namespace (which is normally the default namespace) using kubectl delete:

kubectl delete all --all

all refers to all resource types such as pods, deployments, services, etc. --all is used to delete every object of that resource type instead of specifying it using its name or label.

To delete everything from a certain namespace you use the -n flag:

kubectl delete all --all -n {namespace}

Method 2: You can also delete a namespace and re-create it. This will delete everything that belongs to it:

kubectl delete namespace {namespace}
kubectl create namespace {namespace}

Note (thanks @Marcus): all in kubernetes does not refers to every kubernetes object, such as admin level resources (limits, quota, policy, authorization rules). If you really want to make sure to delete eveything, it's better to delete the namespace and re-create it. Another way to do that is to use kubectl api-resources to get all resource types, as seen here:

kubectl delete "$(kubectl api-resources --namespaced=true --verbs=delete -o name | tr "\n" "," | sed -e 's/,$//')" --all

Solution 2:[2]

You can also delete Kubernetes resources with the help of labels attached to it. For example, suppose below label is attached to all resource

metadata:
  name: label-demo
  labels:
    env: dev
    app: nginx

now just execute the below commands

deleting resources using app label
$ kubectl delete pods,rs,deploy,svc,cm,ing -l app=nginx

deleting resources using envirnoment label
$ kubectl delete pods,rs,deploy,svc,cm,ing -l env=dev

Solution 3:[3]

First backup your namespace resources and then delete all resources found with the get all command:

kubectl get all --namespace={your-namespace} -o yaml > {your-namespace}.yaml
kubectl delete -f {your-namespace}.yaml

Nevertheless, still some resources exists in your cluster. Check with

kubectl api-resources --verbs=list --namespaced -o name | xargs -n 1 kubectl get --show-kind --ignore-not-found --namespace {your-namespace}

If you really want to COMPLETELY delete your namespace, go ahead with:

kubectl delete namespace {your-namespace}

(tested with Client v1.23.1 and Server v1.22.3)

Solution 4:[4]

can also try kubectl delete all --all --all-namespaces

all refers to all resources

--all refers to all resources, including uninitialized ones

--all-namespaces in all all namespaces

Solution 5:[5]

In case if you want to delete all K8S resources in the cluster. Then, easiest way would be to delete the entire namespace.

kubectl delete ns <name-space>

Solution 6:[6]

kubectl delete deploy,service,job,statefulset,pdb,networkpolicy,prometheusrule,cm,secret,ds -n namespace -l label

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1
Solution 2
Solution 3
Solution 4 adelmoradian
Solution 5 Om Prakash
Solution 6 Suraj Rao

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