Kubernetes

Kubernetes and Helm.

File aliases/k8s.sh. Disable: export ALIASX_DISABLE="k8s"

kubectl

Name	Runs	What it does
`k`	`kubectl`	kubectl	needs kubectl
`kg`	`kubectl get`	get resources	needs kubectl
`kd`	`kubectl describe`	describe resource	needs kubectl
`ka`	`kubectl apply -f`	apply manifest file	needs kubectl
`ke`	`kubectl edit`	edit resource	needs kubectl
`kdiff`	`kubectl diff -f`	diff manifest against cluster	needs kubectl

Resources

Name	Runs	What it does
`kgp`	`kubectl get pods`	pods	needs kubectl
`kgpa`	`kubectl get pods --all-namespaces`	pods, all namespaces	needs kubectl
`kgpw`	`kubectl get pods --watch`	watch pods	needs kubectl
`kgd`	`kubectl get deployments`	deployments	needs kubectl
`kgs`	`kubectl get services`	services	needs kubectl
`kgi`	`kubectl get ingress`	ingresses	needs kubectl
`kgn`	`kubectl get nodes`	nodes	needs kubectl
`kgns`	`kubectl get namespaces`	namespaces	needs kubectl
`kgcm`	`kubectl get configmaps`	configmaps	needs kubectl
`kdp`	`kubectl describe pod`	describe pod	needs kubectl
`kdd`	`kubectl describe deployment`	describe deployment	needs kubectl
`kev`	`kubectl get events --sort-by=.metadata.creationTimestamp`	events, oldest first	needs kubectl

Logs and debugging

Name	Runs	What it does
`kl`	`kubectl logs`	pod logs	needs kubectl
`klf`	`kubectl logs --follow --tail=200`	follow last 200 pod log lines	needs kubectl
`kexec`	`kubectl exec -it`	exec into pod	needs kubectl
`ktopn`	`kubectl top nodes`	node CPU and memory	needs kubectl
`ktopp`	`kubectl top pods`	pod CPU and memory	needs kubectl

Context and namespace

Name	Runs	What it does
`kctx`	`kubectl config current-context`	current context	needs kubectl
`kctxs`	`kubectl config get-contexts`	all contexts	needs kubectl
`kns`	`kubectl config view --minify --output "jsonpath={..namespace}"`	current namespace	needs kubectl

Rollout

Name	Runs	What it does
`kroll`	`kubectl rollout status`	rollout status	needs kubectl
`krestart`	`kubectl rollout restart`	restart rollout	needs kubectl
`khistory`	`kubectl rollout history`	rollout history	needs kubectl

Troubleshooting

Name	Runs	What it does
`kbad`	`kubectl get pods -A --field-selector=status.phase!=Running,status.phase!=Succeeded`	pods not running	needs kubectl
`kimages`	`kubectl get pods -A -o jsonpath="{..image}" \| tr " " "\n" \| sort \| uniq -c`	images in use	needs kubectl
`kgall`	`kubectl get all`	everything in namespace	needs kubectl
`ksecret NAME KEY`		print decoded value of one secret key example $ ksecret db-creds password s3cret	needs kubectl
`kshell POD`		shell into pod (sh) example $ kshell api-7d9f8b-x2k4 /app $	needs kubectl
`krun [IMAGE]`		throwaway debug pod, removed on exit (default busybox) example $ krun If you don't see a command prompt, try pressing enter. / #	needs kubectl
`kuse CONTEXT`		switch kubectl context example $ kuse prod Switched to context "prod".	needs kubectl
`knamespace NS`		set namespace for current context example $ knamespace payments Context "prod" modified.	needs kubectl
`kpf RESOURCE LOCAL:REMOTE`		port-forward example $ kpf svc/api 8080:80 Forwarding from 127.0.0.1:8080 -> 80	needs kubectl
`kdebug POD [IMAGE]`		attach debug container (default busybox) example $ kdebug api-7d9f8b-x2k4 Defaulting debug container name to debugger-x7k2. / #	needs kubectl

Helm (prefix hm; h is history)

Name	Runs	What it does
`hm`	`helm`	helm	needs helm
`hmls`	`helm list`	releases	needs helm
`hmlsa`	`helm list --all-namespaces`	releases, all namespaces	needs helm
`hmrepo`	`helm repo list`	chart repositories	needs helm
`hmrepou`	`helm repo update`	update chart repositories	needs helm
`hmsearch`	`helm search repo`	search charts	needs helm
`hmstatus`	`helm status`	release status	needs helm
`hmhistory`	`helm history`	release history	needs helm
`hmtemplate`	`helm template`	render chart locally	needs helm
`hmlint`	`helm lint`	lint chart	needs helm