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kubectl

kubectl get​

kubectl get nodes

OR

kubectl get pods/deployments/svc/events/networkpolicy -n <namespace> #OR --all-namespaces

Get a list of items in JSON:

kubectl get deployments/daemonset/sts -n sre-monitoring -o json | jq '.items[].spec.template.spec.containers[] | {name: .name, requests: .resources.requests, limits: .resources.limits}'

kubectl describe​

kubectl describe pod/svc <service-name> -n <namespace>
  • Verify the Updated DaemonSet
kubectl describe daemonset cadvisor -n utils

kubectl logs​

kubectl logs <pod-name> -n <namespace>

real-time monitoring:

kubectl logs -f <pod-name> -n <namespace>

View Logs for a Specific Container in the Pod:

kubectl logs <pod-name> -c <container-name> -n <namespace>

Filter Logs for Errors:

kubectl logs <pod-name> -n <namespace> | grep -i error

kubectl exec​

Exec into the Pod:

kubectl exec -it <pod-name> -n <namespace> -- /bin/bash

kubectl apply​

kubectl apply -f <policy-file>.yaml

kubectl top​

kubectl top <node-name>
kubectl top <pod-name> -n <namespace> #can be used with --containers

kubectl edit​

  • Manually Edit the DaemonSet (if necessary)
kubectl edit daemonset cadvisor -n utils

kubectl scale​

Stop of a StatefulSet work

kubectl scale statefulset <NAME> --replicas=0 -n <NAMESPACE>

kubectl delete​

Delete PVC

kubectl delete pvc <NAME> -n <NAMESPACE>

kubectl auth​

Check what you to be able to:

kubectl auth can-i patch statefulset -n <NAMESPACE>
kubectl auth can-i delete pvc -n <NAMESPACE>
kubectl auth can-i get secret -n <NAMESPACE>
kubectl auth can-i get pod -n <NAMESPACE>
kubectl auth can-i create configmap -n <NAMESPACE>