Cheat sheet related to k8/docker/helm and other related technologies

kube-docker-onetime

# long
docker run --rm -ti \
  --publish <container port>:<exposed port> \
  --env <env>=<val> \
  --volume <local path>:<mounted path> \
  <repo>/<image>:<tag>
 
# short
docker run --rm -ti \
 -p <container port>:<exposed port> \
 [-e <env>=<val> | --env-file <list of files>] \
 -v <local path>:<mounted path> \
 <repo>/<image>:<tag>
 
 # existing container
 docker exec -ti container_name sh
 
 # Runs a one time container in your kubernetes cluster

# long form
kubectl run --tty --stdin --rm --restart Never --namespace <namespace> --image=<your-image> sh

# short form
kubectl run -ti --rm --restart Never -n <namespace> --image=<your-image> sh

# existing container, works like a ssh
kubectl exec -n <namespace> -ti -c <container> <pod> -- /bin/bash

kube-set-namespace

# set current context to use given namespace
# instead of doing kubectl -n namespace all the time
kubectl config set-context --current --namespace="yournamespace"