Azure Container Registry

Azure Container Registry とは

ACR のサービス レベル

# Create a Premium ACR in East US
az acr create \
  --name mycontainerregistry \
  --resource-group MyRG \
  --location eastus \
  --sku Premium

# List ACR instances in the subscription
az acr list --query '[].{name:name, sku:sku.name, loginServer:loginServer}' -o table

ACR へのイメージのプッシュ

# Authenticate to ACR
az acr login --name mycontainerregistry

# Tag a local image for ACR
docker tag myapp:latest mycontainerregistry.azurecr.io/myapp:v1.0

# Push the image
docker push mycontainerregistry.azurecr.io/myapp:v1.0

# List images in the registry
az acr repository list --name mycontainerregistry -o table
az acr repository show-tags --name mycontainerregistry --repository myapp

ACR Tasks：クラウドベースのビルド

# Quick task: build and push without local Docker
az acr build \
  --registry mycontainerregistry \
  --image myapp:v1.0 \
  . # build context (current directory with Dockerfile)

# Define a multi-step ACR Task triggered on commit
az acr task create \
  --name buildAndTest \
  --registry mycontainerregistry \
  --context https://github.com/myorg/myrepo.git \
  --file acr-task.yaml \
  --git-access-token <GITHUB_PAT>

RBAC によるアクセス制御

# Grant AKS cluster's managed identity the AcrPull role
ACR_ID=$(az acr show --name mycontainerregistry --resource-group MyRG --query id -o tsv)
AKS_IDENTITY=$(az aks show --name myAKSCluster --resource-group MyRG \
  --query identityProfile.kubeletidentity.objectId -o tsv)

az role assignment create \
  --assignee $AKS_IDENTITY \
  --role AcrPull \
  --scope $ACR_ID

グローバル デプロイのための geo レプリケーション

# Add a geo-replication to West Europe
az acr replication create \
  --name westeurope \
  --registry mycontainerregistry \
  --location westeurope

# List all replicas
az acr replication list \
  --registry mycontainerregistry \
  --query '[].{name:name, location:location, status:provisioningState}' -o table

コンテンツの信頼性とイメージ署名

# Enable content trust on the registry
az acr config content-trust update \
  --registry mycontainerregistry \
  --status enabled

# Sign an image when pushing (DOCKER_CONTENT_TRUST env var)
# export DOCKER_CONTENT_TRUST=1
# docker push mycontainerregistry.azurecr.io/myapp:v1.0
# (Docker prompts for signing key passphrase)

Defender による脆弱性スキャン

# Enable Defender for Containers on the subscription
az security pricing create \
  --name Containers \
  --tier Standard

# View vulnerability assessment results
az security assessment list \
  --query "[?contains(displayName, 'Container')].{name:displayName, status:status.code}" \
  -o table

ACR のプライベート エンドポイント

# Create a private endpoint for ACR
az network private-endpoint create \
  --name acr-private-endpoint \
  --resource-group MyRG \
  --vnet-name MyVNet \
  --subnet PrivateEndpointSubnet \
  --private-connection-resource-id \
    $(az acr show --name mycontainerregistry --query id -o tsv) \
  --group-id registry \
  --connection-name acrConnection

# Disable public access
az acr update \
  --name mycontainerregistry \
  --public-network-enabled false

ライフサイクル管理：古いイメージの削除

# Create a scheduled purge task: delete tags older than 30d
az acr task create \
  --name scheduledPurge \
  --registry mycontainerregistry \
  --cmd 'acr purge --filter myapp:.*  --ago 30d --keep 5 --untagged' \
  --schedule '0 1 * * *' \
  --context /dev/null

ACR と AKS の統合

# Attach ACR to an existing AKS cluster
az aks update \
  --name myAKSCluster \
  --resource-group MyRG \
  --attach-acr mycontainerregistry

# Now pods can use ACR images without imagePullSecrets
# Example pod spec:
# spec:
#   containers:
#   - name: myapp
#     image: mycontainerregistry.azurecr.io/myapp:v1.0

クイックチェック

レッスンのまとめ