Kubernetes General troubleshooting and debugging tools¶

This is just documentation with some useful tools and notes about Kubernetes debugging.

Debugging pods and containers¶

• To get a shell in a temporary pod

kubectl run -i --tty --rm debug-pod --image=busybox --restart=Never -- sh

• To get a shell in an existing pod

kubectl exec -it <pod-name> -- sh

• To get logs from a pod

kubectl logs <pod-name>

• To get logs from a specific container in a pod

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

• To get logs from a pod and follow them in real-time

kubectl logs -f <pod-name>

• To get logs from a specific container in a pod and follow them in real-time

kubectl logs -f <pod-name> -c <container-name>

• To describe a pod and get detailed information about it

kubectl describe pod <pod-name>

• To get the events related to a pod

kubectl get events --field-selector involvedObject.name=<pod-name>

• To get the status of a pod

kubectl get pod <pod-name> -o wide

• To get the resource usage of a pod

kubectl top pod <pod-name>

• To get the resource usage of all pods

kubectl top pods

• To get the resource usage of a specific container in a pod

kubectl top pod <pod-name> -c <container-name>

• To get the resource usage of all containers in a pod

kubectl top pod <pod-name> -A