Table des matières

Kubernetes Cheat Sheet

kubectl api-resources
kubectl api-resources -o wide
kubectl api-versions
admissionregistration.k8s.io/v1
admissionregistration.k8s.io/v1beta1
apiextensions.k8s.io/v1
apiextensions.k8s.io/v1beta1
apiregistration.k8s.io/v1
apiregistration.k8s.io/v1beta1
apps/v1
authentication.k8s.io/v1
authentication.k8s.io/v1beta1
authorization.k8s.io/v1
authorization.k8s.io/v1beta1
autoscaling/v1
autoscaling/v2beta1
autoscaling/v2beta2
batch/v1
batch/v1beta1
certificates.k8s.io/v1beta1
coordination.k8s.io/v1
coordination.k8s.io/v1beta1
crd.projectcalico.org/v1
discovery.k8s.io/v1beta1
events.k8s.io/v1beta1
extensions/v1beta1
metrics.k8s.io/v1beta1
networking.k8s.io/v1
networking.k8s.io/v1beta1
node.k8s.io/v1beta1
policy/v1beta1
rbac.authorization.k8s.io/v1
rbac.authorization.k8s.io/v1beta1
scheduling.k8s.io/v1
scheduling.k8s.io/v1beta1
storage.k8s.io/v1
storage.k8s.io/v1beta1
v1
kubectl explain pods

Visualiser les informations

Nodes

$ kubectl get no
$ kubectl get no -o yaml
$ kubectl describe no
$ kubectl get no -o yaml
$ kubectl get node --selector=[label_name]
$ kubectl get nodes -o jsonpat h='{.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
$ kubectl get pod [pod_name] -o yaml --export
$ kubectl 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 yaml

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

Multiple Resources

$ 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
$ kubectl 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 [deploy_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]

Service Accounts

$ 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=nginx --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=nginx

Interactive Pod

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

Output YAML to a File

$ kubectl create deploy [depl oy_name] --image=nginx --dry-run -o yaml > deploy. yaml
$ kubectl get po [pod_name] -o yaml --export > pod.yaml

GettingHelp

$ 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
$ kubectl get cs