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Kubernetes Cheat sheet commands

Kubernetes Cheat sheet commands



Kubernetes Cheat Sheet

Viewing Resource Information

Nodes

$ kubectl get no

$ kubectl get no -o wide

$ kubectl describe no

$ kubectl get no -o yaml

$ kubectl get node --select or =[ label _name]

$ kubectl get nodes -o jsonpath='{.items[*].status.addresses[?(@.type=="ExternalIP")].address}'

$ kubectl top node [node_name]

Pods

$ kubectl get po

$ kubectl get po -o wide

$ kubectl describe po

$ kubectl get po --show-labels

$ kubectl get po -l app=nginx

$ kubectl get po -o yaml

$ kubect l get pod [ pod_name] -o yaml --export

$ kubect l get pod [pod_name] -o yaml --export > nameoffile.yaml

$ kubectl get pods --field-selector status.phase=Running

Namespaces

$ kubectl get ns

$ kubectl get ns -o yaml

$ kubectl describe ns

Deployments

$ kubectl get deploy

$ kubectl describe deploy

$ kubectl get deploy -o wide

$ kubectl get deploy -o yam

Services

$ kubectl get svc

$ kubectl describe svc

$ kubectl get svc -o wide

$ kubectl get svc -o yaml

$ kubectl get svc --show-labels

DaemonSets

$ kubectl get ds

$ kubectl get ds --all-namespaces

$ kubectl describe ds [daemonset _name] -n [namespace_name]

$ kubectl get ds [ds_name] -n [ns_name] -o yaml

Events

$ kubectl get events

$ kubectl get events -n kube-system

$ kubectl get events -w

Logs

$ kubectl logs [pod_name]

$ kubectl logs --since=1h [pod_name]

$ kubectl logs --tail =20 [pod_name]

$ kubectl logs -f -c [container_name] [pod_name]

$ kubectl logs [pod_name] > pod.log

Service Accounts

$ kubectl get sa

$ kubectl get sa -o yaml

$ kubectl get serviceaccounts default -o yaml > ./sa.yaml

$ kubectl replace serviceaccount default -f. /sa.yaml

ReplicaSets

$ kubectl get rs

$ kubectl describe rs

$ kubectl get rs -o wide

$ kubectl get rs -o yaml

Roles

$ kubectl get roles --all-namespaces

$ kubectl get roles --all-namespaces -o yaml

Secrets

$ kubectl get secrets

$ kubectl get secrets --all-namespaces

$ kubectl get secrets -o yaml

ConfigMaps

$ kubectl get cm

$ kubectl get cm --all-namespaces

$ kubectl get cm --all-namespaces -o yaml

Ingress

$ kubectl get ing

$ kubectl get ing --all-namespaces

PersistentVolume

$ kubectl get pv

$ kubectl describe pv

PersistentVolumeClaim

$ kubectl get pvc

$ kubectl describe pvc

StorageClass

$ kubectl get sc

$ kubectl get sc -o yaml

MultipleResources

$ kubectl get svc, po

$ kubectl get deploy, no

$ kubectl get all

$ kubectl get all --all-namespaces

Changing Resource Attributes

Taint

$ kubectl taint [node_name] [taint _name]

Labels

$ kubectl label [node_name] disktype=ssd

$ kubrectl label [pod_name] env=prod

Cordon/Uncordon

$ kubectl cordon [node_name]

$ kubectl uncordon [node_name]

Drain

$ kubectl drain [node_name]

Nodes/Pods

$ kubectl delete node [node_name]

$ kubectl delete pod [pod_name]

$ kubectl edit node [node_name]

$ kubectl edit pod [pod_name]

Deployments/Namespaces

$ kubectl edit deploy [deploy_name]

$ kubectl delete deploy [deploy_name]

$ kubectl expose deploy [depl oy_name] --port=80 --type=NodePort

$ kubectl scale deploy [deploy_name] --replicas=5

$ kubectl delete ns

$ kubectl edit ns [ns_name]

Services

$ kubectl edit svc [svc_name]

$ kubectl delete svc [svc_name]

DaemonSets

$ kubectl edit ds [ds_name] -n kube-system

$ kubectl delete ds [ds_name]

ServiceAccounts

$ kubectl edit sa [sa_name]

$ kubectl delete sa [sa_name]

Annotate

$ kubectl annotate po [pod_name] [annotation]

$ kubectl annotate no [node_name]

Adding Resources

Creating a Pod

$ kubectl create -f [name_of _file]

$ kubectl apply -f [name_of _file]

$ kubectl run [pod_name] --image=ngi nx --restart=Never

$ kubectl run [ pod_name] --generator =run-pod/v1 --image=nginx

$ kubectl run [ pod_name] --image=nginx --restart=Never

Creating a Service

$ kubectl create svc nodeport [svc_name] --tcp=8080:80

Creating a Deployment

$ kubectl create -f [name_of _file]

$ kubectl apply -f [name_of _file]

$ kubectl create deploy [deploy_name] --image=ngi nx

Interactive Pod

$ kubectl run [pod_name] --image=busybox --rm -it --restart=Never -- sh

Output YAMLto aFile

$ kubectl create deploy [deploy_name] --image=ngi nx --dry-run -o yaml > deploy.yaml

$ kubectl get po [pod_name] -o yaml --export > pod. yaml

Getting Help

$ kubectl -h

$ kubectl create -h

$ kubectl run -h

$ kubectl explain deploy.spec

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