How to find running containers using terminal?-CodePudding

I see the following containers running on Docker Desktop application:

But when I try docker ps on CMD I see nothing as result(empty table) and the result of kubectl get pods is the following:

NAME                               READY   STATUS             RESTARTS      AGE
client-depl-cdf975567-vzgw6        0/1     ImagePullBackOff   7 (34m ago)   12h
comments-depl-76c5bc6948-6fz4s     0/1     ImagePullBackOff   0 (44m ago)   12h
event-bus-depl-69cfbf58f7-slpjc    0/1     ImagePullBackOff   8             12h
moderation-depl-786f4ffc65-kfwh4   0/1     ImagePullBackOff   1 (40m ago)   12h
posts-depl-5f9b5c5774-wjv59        0/1     ImagePullBackOff   11            12h
query-depl-5d7d567fc7-vclfv        0/1     ImagePullBackOff   8             12h

I don't know how to stop the running containers and delete all the images? When I try it using the GUI app they create themselves again automatically.

CodePudding user response：

You need to delete the corresponding workload resource (Deployment, Statefulset etc) which are controlling your K8s cluster. Workloads by default come with restartPolicy as Always, due to which your Pods are getting recreated after deletion.

To list the a workload resource, run the following command:

# kubectl get <workload-resource name> -A
# -A flag prints the resources present in all namespaces.
kubectl get deploy -A
kubectl get daemonset -A
kubectl get stateful -A

Copy the name of the resource from the printed list and delete it:

kubectl delete <resource-type> <resource-name>
kubectl delete deploy client-depl

CodePudding user response：

you can see all running containers using:

kubectl get deploy -A

for delete them :

kubectl delete deploy client-depl

CodePudding user response：

To see all the running Kubernetes container

kubectl get po -o jsonpath='{range .items[*]}{"pod: "}{.metadata.name}{"\n"}{range .spec.containers[*]}{"\tname: "}{.name}{"\n\timage: "}{.image}{"\n"}{end}'

for delete them :

kubectl delete deploy deployment-obj

CodePudding user response：

To delete these you might need to delete deployment , daemonset & statefulsets. If you delete a pod it might just deleted that particular pod but replicas in the deployment will re-spin a new pod hence you should be deleting the deployment.

kubectl get deployment -A lists all the deployment running in your cluster. kubectl get daemonset -A lists all the daemonset running in your cluster. kubectl get statefulset -A lists all the statefulset running in your cluster.

To delete these use kubectl delete deployment <deployment-name> -n <namespace> Similarly replace deployment with statefulset and daemonset to delete that resource.

Once this is done to delete unused images use docker image prune -a this will delete all unused images from your machine. If you need to remove other docker resources like unused containers, newtworks run docker system prune -a

Delete all pods in a namespace. Make sure you are connected to the right cluster before running this command :

kubectl delete --all pods --namespace=foo