Guia-Tutorial-kubernetes/guias/04-cheatsheet.md

Cheatsheet kubernetes

Índice

• Cheatsheet kubernetes
  • Resumen en una imagen
  • Visualizar información de los recursos
    • Nodes
    • ods
    • Namespaces
    • Deployments
    • Services
    • DaemonSets
    • Events
    • Logs
    • Service Accounts
    • ReplicaSets
    • Roles
    • Secrets
    • ConfigMaps
    • Ingress
    • PersistentVolume
    • PersistentVolumeClaim
    • StorageClass
    • MultipleResources
  • Modificar atributos de los recursos
    • Taint
    • Labels
    • Cordon/Uncordon
    • Drain
    • Nodes/Pods
    • Deployments/Namespaces
    • Services
    • DaemonSets
    • ServiceAccounts
    • Annotate
  • Añadir recursos
    • Crear Pod
    • Crear un Service
    • Crear Deployment
    • Interactive Pod
    • Salida de YAMLto en un fichero
    • Ayuda
  • Solicitaciones
    • Llamar a la API
    • Información del Cluster

Resumen en una imagen

Descarga PNG

Visualizar información de los recursos

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]

ods

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

Modificar atributos de los recursos

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]

Añadir recursos

Crear 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

Crear un Service

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

Crear 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

Salida de YAMLto en un fichero

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

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

Ayuda

kubectl -h

kubectl create -h

kubectl run -h

kubectl explain deploy.spec

Solicitaciones

Llamar a la API

kubectl get –raw /apis/metrics.k8s.io/

Información del Cluster

kubectl config

kubectl cluster -info

kubectl get componentstatuses

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Puedes seguir con la guía 05 Helm: Control de despliegues en Kubernetes.

Todas las guías:

• 01 Instalación kubctl
• 02 Clústers
• 03 manifiestos
• 04 Cheatsheet kubernetes
• 05 Helm: Control de despliegues en Kubernetes
• 06 K9s: Otro estilo de CLI para k8s