Déployer une application dans AKS

Salut!

Après vu ensemble comment déployer un cluster AKS, nous allons voir ensemble dans cet article comment déployer une application à l’intérieur de celui-ci. Nous utiliserons la registry que nous avons pu créer dans un précédent article.

maxime@Azure:~$ az acr list --resource-group k8smaxdemo --query "[].{acrLoginServer:loginServer}" --output table
AcrLoginServer
------------------------
k8smaxdemoacr.azurecr.io
vi aks_to_acr.sh

#!/bin/bash

# Grant AKS access to ACR

AKS_RESOURCE_GROUP=k8smaxdemo
AKS_CLUSTER_NAME=myK8sCluster
ACR_RESOURCE_GROUP=k8smaxdemo
ACR_NAME=k8smaxdemoacr

# Get the id of the service principal configured for AKS
CLIENT_ID=$(az aks show --resource-group $AKS_RESOURCE_GROUP --name $AKS_CLUSTER_NAME --query "servicePrincipalProfile.clientId" --output tsv)

# Get the ACR registry resource id
ACR_ID=$(az acr show --name $ACR_NAME --resource-group $ACR_RESOURCE_GROUP --query "id" --output tsv)

# Create role assignment
az role assignment create --assignee $CLIENT_ID --role Reader --scope $ACR_ID
maxime@Azure:~$ ./aks_to_acr.sh
{
 "id": "/subscriptions/7db5e03c-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/k8smaxdemo/providers/Microsoft.ContainerRegistry/registries/k8smaxdemoacr/providers/Microsoft.Authorization/roleAssignments/85f55dfb-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
 "name": "85f55dfb-xxxx-xxxx-xxxx-xxxxxxxxxxxxx",
 "properties": {
 "additionalProperties": {
 "createdBy": null,
 "createdOn": "2018-02-03T19:54:33.0900849Z",
 "updatedBy": "56dfc2de-7c4d-4b8a-bf7b-d63cdeae5907",
 "updatedOn": "2018-02-03T19:54:33.0900849Z"
 },
 "principalId": "f6700ac3-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
 "roleDefinitionId": "/subscriptions/7db5e03c-xxxx-xxxx-xxxx-xxxxxxxxxxxx/providers/Microsoft.Authorization/roleDefinitions/acdd
72a7-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
 "scope": "/subscriptions/7db5e03c-xxxx-xxxx-xxxx-xxxxxxxxxxxx/resourceGroups/k8smaxdemo/providers/Microsoft.ContainerRegistry/r
egistries/k8smaxdemoacr"
 },
 "resourceGroup": "k8smaxdemo",
 "type": "Microsoft.Authorization/roleAssignments"
}
vi aks_secrets.sh

#!/bin/bash

# Access with Kubernetes Secrets

ACR_NAME=k8smaxdemoacr
SERVICE_PRINCIPAL_NAME=acr-service-principal

# Populate the ACR login server and resource id. 
ACR_LOGIN_SERVER=$(az acr show --name $ACR_NAME --query loginServer --output tsv)
ACR_REGISTRY_ID=$(az acr show --name $ACR_NAME --query id --output tsv)

# Create a contributor role assignment with a scope of the ACR resource. 
SP_PASSWD=$(az ad sp create-for-rbac --name $SERVICE_PRINCIPAL_NAME --role Reader --scopes $ACR_REGISTRY_ID --query password --output tsv)

# Get the service principle client id.
CLIENT_ID=$(az ad sp show --id http://$SERVICE_PRINCIPAL_NAME --query appId --output tsv)

# Output used when creating Kubernetes secret.
echo "Service principal ID: $CLIENT_ID"
echo "Service principal password: $SP_PASSWD"
maxime@Azure:~$ ./aks_secrets.sh
Retrying role assignment creation: 1/36
Service principal ID: 7fb4393b-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Service principal password: 8axxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
maxime@Azure:~$ kubectl create secret docker-registry acr-auth --docker-server k8smaxdemoacr.azurecr.io --docker-username 7fb4393b-
xxxx-xxxx-xxxx-xxxxxxxxxxxx --docker-password 8axxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx --docker-email max.coquerel@live.fr
secret "acr-auth" created
vi azure-vote-all-in-one-redis.yaml

apiVersion: apps/v1beta1
kind: Deployment
metadata:
 name: azure-vote-back
spec:
 replicas: 1
 template:
 metadata:
 labels:
 app: azure-vote-back
 spec:
 containers:
 - name: azure-vote-back
 image: redis
 ports:
 - containerPort: 6379
 name: redis
---
apiVersion: v1
kind: Service
metadata:
 name: azure-vote-back
spec:
 ports:
 - port: 6379
 selector:
 app: azure-vote-back
---
apiVersion: apps/v1beta1
kind: Deployment
metadata:
 name: azure-vote-front
spec:
 replicas: 1
 template:
 metadata:
 labels:
 app: azure-vote-front
 spec:
 containers:
 - name: azure-vote-front
 image: k8smaxdemoacr.azurecr.io/microsoft/azure-vote-front:redis-v1
 ports:
 - containerPort: 80
 env:
 - name: REDIS
 value: "azure-vote-back"
 imagePullSecrets:
 - name: acr-auth
---
apiVersion: v1
kind: Service
metadata:
 name: azure-vote-front
spec:
 type: LoadBalancer
 ports:
 - port: 80
 selector:
 app: azure-vote-front
maxime@Azure:~$ kubectl create -f azure-vote-all-in-one-redis.yaml
deployment "azure-vote-back" created
service "azure-vote-back" created
deployment "azure-vote-front" created
service "azure-vote-front" created
maxime@Azure:~$ kubectl get service azure-vote-front --watch
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
azure-vote-front LoadBalancer 10.0.85.75 <pending> 80:30785/TCP 32s
azure-vote-front LoadBalancer 10.0.85.75 52.226.17.113 80:30785/TCP 2m

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