Kubernetes Cheatsheet

Gregg

The get parameter is a powerful way of discovering your kubenetes resources. You can use it to query:

  • namespace
  • pod
  • node
  • deployment
  • service
  • replicasets

$ kubectl get nodes $ kubectl get ns # ns is an abreviation for namespace $ kubectl get pods -n kube-system

The create command can do just that for:

  • service
  • cronjob
  • deployment
  • job
  • namespace (or ns)

$ kubectl create ns hello-world $ kubectl create cronjob my-cronjob --image=alpine --schedule="*/15 * * * *" -- echo "hi there"

You can also use cj as an abreviation for cronjob

$ kubectl create cj my-cronjob --image=alpine --schedule="*/15 * * * *" -- echo "hi there"

The edit parameter allows you to update resources:

$ kubectr edit my-cronjob

The delete parameter allows you to remove resources:

$ kubectl delete cronjob my-cronjob

The apply parameter allows you to apply configurations from files

$ kubectl apply -f jenkins.yaml

The describe parameter provides details of your resources which could be:

  • nodes
  • pods
  • services
  • deployments
  • replicasets
  • cronjobs

$ kubectl describe cronjob my-cronjob

The logs parameter displays the contents of the resource’s log:

$ kubectl logs my-resource -n charts

The exec parameter allows you to exec into a container:

$ kubectl exec -it my-resource -n charts -- /bin/bash

The cp parameter lets you copy files and directories to and from containers:

$ kubectl cp file1.txt my-resource:file1.txt