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content/fr/docs/tasks/run-application/run-stateless-application-deployment.md
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--- | ||
title: Exécuter une application stateless avec un Déploiement | ||
min-kubernetes-server-version: v1.9 | ||
content_type: tutorial | ||
weight: 10 | ||
--- | ||
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<!-- overview --> | ||
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Cette page montre comment exécuter une application en utilisant une resource Deployment (déploiement) dans Kubernetes. | ||
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## {{% heading "objectives" %}} | ||
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- Créer un déploiement nginx. | ||
- Utiliser kubectl pour afficher des informations sur le déploiement. | ||
- Mettre à jour le déploiement. | ||
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## {{% heading "prerequisites" %}} | ||
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{{< include "task-tutorial-prereqs.md" >}} {{< version-check >}} | ||
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<!-- lessoncontent --> | ||
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## Création et exploration d'un déploiement nginx | ||
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Vous pouvez exécuter une application en créant un objet | ||
déploiement Kubernetes, et vous pouvez décrire un | ||
déploiement dans un fichier YAML. Par exemple, | ||
ce fichier YAML décrit un déploiement qui exécute l'image Docker nginx:1.14.2 : | ||
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{{< codenew file="application/deployment.yaml" >}} | ||
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1. Créez un déploiement basé sur ce fichier YAML: | ||
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```shell | ||
kubectl apply -f https://k8s.io/examples/application/deployment.yaml | ||
``` | ||
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1. Affichez les informations du déploiement: | ||
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```shell | ||
kubectl describe deployment nginx-deployment | ||
``` | ||
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Le résultat sera similaire à ceci : | ||
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``` | ||
Name: nginx-deployment | ||
Namespace: default | ||
CreationTimestamp: Tue, 30 Aug 2016 18:11:37 -0700 | ||
Labels: app=nginx | ||
Annotations: deployment.kubernetes.io/revision=1 | ||
Selector: app=nginx | ||
Replicas: 2 desired | 2 updated | 2 total | 2 available | 0 unavailable | ||
StrategyType: RollingUpdate | ||
MinReadySeconds: 0 | ||
RollingUpdateStrategy: 1 max unavailable, 1 max surge | ||
Pod Template: | ||
Labels: app=nginx | ||
Containers: | ||
nginx: | ||
Image: nginx:1.14.2 | ||
Port: 80/TCP | ||
Environment: <none> | ||
Mounts: <none> | ||
Volumes: <none> | ||
Conditions: | ||
Type Status Reason | ||
---- ------ ------ | ||
Available True MinimumReplicasAvailable | ||
Progressing True NewReplicaSetAvailable | ||
OldReplicaSets: <none> | ||
NewReplicaSet: nginx-deployment-1771418926 (2/2 replicas created) | ||
No events. | ||
``` | ||
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1. Affichez les Pods créés par le déploiement : | ||
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```shell | ||
kubectl get pods -l app=nginx | ||
``` | ||
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Le résultat sera similaire à ceci : | ||
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``` | ||
NAME READY STATUS RESTARTS AGE | ||
nginx-deployment-1771418926-7o5ns 1/1 Running 0 16h | ||
nginx-deployment-1771418926-r18az 1/1 Running 0 16h | ||
``` | ||
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1. Affichez les informations d'un Pod : | ||
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```shell | ||
kubectl describe pod <pod-name> | ||
``` | ||
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où <pod-name> est le nom d'un de vos Pods. | ||
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## Mise à jour du déploiement | ||
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Vous pouvez mettre à jour le déploiement en appliquant un nouveau fichier YAML. | ||
Ce fichier YAML indique que le déploiement doit être mis à jour | ||
pour utiliser nginx 1.16.1. | ||
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{{< codenew file="application/deployment-update.yaml" >}} | ||
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1. Appliquez le nouveau fichier YAML : | ||
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```shell | ||
kubectl apply -f https://k8s.io/examples/application/deployment-update.yaml | ||
``` | ||
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1. Regardez le déploiement créer de nouveaux pods et supprimer les anciens : | ||
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```shell | ||
kubectl get pods -l app=nginx | ||
``` | ||
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## Mise à l'échelle de l'application en augmentant le nombre de réplicas | ||
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Vous pouvez augmenter le nombre de pods dans votre déploiement en appliquant un nouveau fichier YAML. | ||
Ce fichier YAML définit `replicas` à 4, ce qui spécifie que le déploiement devrait avoir quatre pods : | ||
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{{< codenew file="application/deployment-scale.yaml" >}} | ||
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1. Appliquez le nouveau fichier YAML : | ||
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```shell | ||
kubectl apply -f https://k8s.io/examples/application/deployment-scale.yaml | ||
``` | ||
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1. Vérifiez que le déploiement a quatre pods: | ||
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```shell | ||
kubectl get pods -l app=nginx | ||
``` | ||
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Le résultat sera similaire à ceci : | ||
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``` | ||
NAME READY STATUS RESTARTS AGE | ||
nginx-deployment-148880595-4zdqq 1/1 Running 0 25s | ||
nginx-deployment-148880595-6zgi1 1/1 Running 0 25s | ||
nginx-deployment-148880595-fxcez 1/1 Running 0 2m | ||
nginx-deployment-148880595-rwovn 1/1 Running 0 2m | ||
``` | ||
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## Suppression d'un déploiement | ||
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Supprimez le déploiement avec son nom : | ||
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```shell | ||
kubectl delete deployment nginx-deployment | ||
``` | ||
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## ReplicationControllers -- méthode obsolète | ||
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La méthode préférée pour créer une application répliquée consiste à utiliser un déploiement, | ||
qui utilise à son tour un ReplicaSet. | ||
Avant que le déploiement et le ReplicaSet ne soient | ||
ajoutés à Kubernetes, les applications répliquées étaient configurées | ||
à l'aide d'un [ReplicationController](/docs/concepts/workloads/controllers/replicationcontroller/). | ||
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## {{% heading "whatsnext" %}} | ||
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- En savoir plus sur les [Deployments](/docs/concepts/workloads/controllers/deployment/). |
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apiVersion: apps/v1 | ||
kind: Deployment | ||
metadata: | ||
name: nginx-deployment | ||
spec: | ||
selector: | ||
matchLabels: | ||
app: nginx | ||
replicas: 4 # Update the replicas from 2 to 4 | ||
template: | ||
metadata: | ||
labels: | ||
app: nginx | ||
spec: | ||
containers: | ||
- name: nginx | ||
image: nginx:1.16.1 | ||
ports: | ||
- containerPort: 80 |
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apiVersion: apps/v1 | ||
kind: Deployment | ||
metadata: | ||
name: nginx-deployment | ||
spec: | ||
selector: | ||
matchLabels: | ||
app: nginx | ||
replicas: 2 | ||
template: | ||
metadata: | ||
labels: | ||
app: nginx | ||
spec: | ||
containers: | ||
- name: nginx | ||
image: nginx:1.16.1 # Update the version of nginx from 1.14.2 to 1.16.1 | ||
ports: | ||
- containerPort: 80 |
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apiVersion: apps/v1 # apps/v1beta2를 사용하는 1.9.0보다 더 이전의 버전용 | ||
apiVersion: apps/v1 | ||
kind: Deployment | ||
metadata: | ||
name: nginx-deployment | ||
spec: | ||
selector: | ||
matchLabels: | ||
app: nginx | ||
replicas: 2 # 템플릿에 매칭되는 파드 2개를 구동하는 디플로이먼트임 | ||
replicas: 2 # tells deployment to run 2 pods matching the template | ||
template: | ||
metadata: | ||
labels: | ||
app: nginx | ||
spec: | ||
containers: | ||
- name: nginx | ||
image: nginx:1.7.9 | ||
image: nginx:1.14.2 | ||
ports: | ||
- containerPort: 80 |