Common Kubernetes and Docker Commands

Kubernetes (kubectl) Common Commands

View cluster information kubectl cluster-info View component statuses

kubectl -s http://localhost:8080 get componentstatuses

Show pods with node information kubectl get pods -o wide Display pod definitions in YAML kubectl get pods -o yaml List Replication Controllers kubectl get rc List services kubectl get service List nodes kubectl get nodes Find pods by selector kubectl get pod --selector name=redis Show environment variables of a running pod

kubectl exec <span style="color:#e6c07b;">pod-name</span> env

Create resources from a file kubectl create -f filename Replace resources (optional force) kubectl replace -f filename [--force] Delete resources

kubectl delete -f filename

kubectl delete pod pod-name

kubectl delete rc rc-name

kubectl delete service service-name

kubectl delete pod --all

Docker Container Common Commands

List running containers docker ps List all containers docker ps -a Show container IP docker exec ContainerID hostname -i View container logs (follow) docker logs -f ContainerID Enter a Linux container interactively

docker run -it imageID /bin/bash

docker run -i -t imageID /bin/bash

Attach to a running container

docker attach db3

docker attach d48b21a7e439

Note: db3 is the container name (NAMES) and d48b21a7e439 is the container ID (CONTAINER ID). Using docker exec -it ContainerID /bin/bash provides an interactive shell that remains active after exiting the command, unlike a simple docker attach which terminates the container when exit is issued.