kubernetes cheatsheet

cheatsheet.txt

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
Requests
API Call
$ kubectl get --raw /apis/metrics.k8s.io/
Cluster Info
$ kubectl config
$ kubectl cluster -info
$ kubectl get componentstatuses