Docker and Kubernetes

some docker and k8s commands I don't wanna search over internet

Docker ecosystem

# create an image with a tag from git (courtesy of @ahmetb:
docker build -t website:${git describe --always --tags --dirty} .

# run container
docker run -p 3000:8080 -e NODE_ENV='production' --name website-prod \
    --restart=always -d

# access bash inside a running container
docker exec -it container-name bash

# remove all stopped containers
docker rm -v $(docker ps -a -q -f status=exited)

# stop and remove all docker containers
docker stop $(docker ps -a -q) && docker rm $(docker ps -a -q)

# remove all docker images
docker rmi $(docker images -a -q)

# prune docker system
docker system prune

# one liner for docker cleanup
docker stop $(docker ps -a -q) && \
    docker rm $(docker ps -a -q) && \
    docker rmi $(docker images -a -q) && \
    docker system prune

# all commands:

# get credentials for your gcp cluster
gcloud container clusters get-credentials dev-cluster --zone=us-central1-f

# create a deployment on your cluster
kubectl run website-deployment

# check if deployment was successful
kubectl get deployments

# get pods
kubectl get pods

# scale deployments
kubectl scale deployment website-deployment --replicas=4

# rolling updates
kubectl set image deployments/website-deployment$SHA

# remove evicted pods
kubectl get pods | grep Evicted | awk '{print $1}' | xargs kubectl delete pod

# remove all pods
kubectl delete --all pods 

# tail a deployment
kubectl logs deployment/website-deployment --tail 10 -f

# ssh into a pod
kubectl exec -it my-pod -- /bin/bash

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