Command to delete all pods in all kubernetes namespaces

Question

There is no command to do exactly what you asked.

Here are some close matches.

Be careful before running any of these commands. Make sure you are connected to the right cluster, if you use multiple clusters. Consider running. kubectl config view first.

You can delete all the pods in a single namespace with this command:

kubectl delete --all pods --namespace=foo

You can also delete all deployments in namespace which will delete all pods attached with the deployments corresponding to the namespace

kubectl delete --all deployments --namespace=foo

You can delete all namespaces and every object in every namespace (but not un-namespaced objects, like nodes and some events) with this command:

kubectl delete --all namespaces

However, the latter command is probably not something you want to do, since it will delete things in the kube-system namespace, which will make your cluster not usable.

This command will delete all the namespaces except kube-system, which might be useful:

for each in $(kubectl get ns -o jsonpath="{.items[*].metadata.name}" | grep -v kube-system);
do
  kubectl delete ns $each
done

kubectl delete daemonsets,replicasets,services,deployments,pods,rc --all

to get rid of them pesky replication controllers too.

You can simply run

kubectl delete all --all --all-namespaces

• The first all means the common resource kinds (pods, replicasets, deployments, ...)

  • kubectl get all == kubectl get pods,rs,deployments, ...

• The second --all means to select all resources of the selected kinds

---

Note that all does not include:

• non namespaced resourced (e.g., clusterrolebindings, clusterroles, ...)
• configmaps
• rolebindings
• roles
• secrets
• ...

---

In order to clean up perfectly,

• you could use other tools (e.g., Helm, Kustomize, ...)
• you could use a namespace.
• you could use labels when you create resources.

You just need sed to do this:

kubectl get pods --no-headers=true --all-namespaces |sed -r 's/(\S+)\s+(\S+).*/kubectl --namespace \1 delete pod \2/e'

Explains:

1. use command kubectl get pods --all-namespaces to get the list of all pods in all namespaces.
2. use --no-headers=true option to hide the headers.
3. use s command of sed to fetch the first two words, which represent namespace and pod's name respectively, then assemble the delete command using them.
4. the final delete command is just like: kubectl --namespace kube-system delete pod heapster-eq3yw.
5. use the e modifier of s command to execute the command assembled above, which will do the actual delete works.

To avoid delete pods in kube-system namespace, just need to add grep -v kube-system to exclude kube-system namespace before the sed command.

K8s completely works on the fundamental of the namespace. if you like to release all the resource related to specified namespace.

you can use the below mentioned :

kubectl delete namespace k8sdemo-app