Kubernetes CLI

Upstream Kubernetes tooling. All optional installs — this machine doesn't have a cluster wired up by default. Each tip leads with the install command. Repo helpers like kdel* live in 22_dev_infra.md (Tip 22.2).

Tip 40.1: kubectl

brew install kubernetes-cli

kubectl get pods                              # list pods in current namespace
kubectl logs <pod>                            # show pod logs (-f to follow)
kubectl exec -it <pod> -- bash                # shell into a pod
kubectl get <kind> -A                         # all resources of <kind> across namespaces

Docs: https://kubernetes.io/docs/reference/kubectl/

Tip 40.2: kubectx / kubens

Interactive cluster and namespace switching.

brew install kubectx

kubectx                  # interactive picker for cluster context
kubens                   # interactive picker for namespace
kubectx <name>           # switch directly
kubens <name>            # switch directly
kubectx -                # toggle to previous context

Docs: https://github.com/ahmetb/kubectx

Tip 40.3: kube-ps1

Adds the current <cluster>:<namespace> to your shell prompt so you always know what kubectl will hit.

brew install kube-ps1

Configure with KUBE_PS1_* env vars; toggle on/off with kubeon / kubeoff after sourcing the plugin.

Docs: https://github.com/jonmosco/kube-ps1

Tip 40.4: k9s

Terminal UI for Kubernetes. Massively faster than chained kubectl for live debugging — see pods, logs, events, descriptions, all with single-key navigation.

brew install k9s

k9s                  # launch
:pods                # jump to pods view
:svc                 # services
:ns                  # namespaces (and switch into one)
?                    # help
:q                   # quit

Docs: https://k9scli.io/