如何在Cloudformation模板中引用现有的ELB DNSName

Question

我们有Cloudformation模板，我们通过它为我们的产品部署红外资源。下面是通过CF模板创建的AWS组件：1。网络组件。如VPC、子网、安全组等。IAM角色和策略。3.EMR 4。EKS 5。MSK 6。RDS7.弹性疼痛

  ServiceDeployment:
    Type: "Custom::KubeManifest"
    Version: '1.0'
    Properties:
      ServiceToken: !Ref KubeManifestLambdaArn
      KubeConfigPath: !Sub "s3://${KubeConfigS3Bucket}/${KubeConfigS3Key}"
      KubeConfigKmsContext: !Ref KmsContext
      Manifest:
        apiVersion: v1
        kind: Service
        metadata:
          name: test
          labels:
            app: client
            tier: master
        spec:
          selector:
            app: client
            tier: master
          ports:
          - name: client-api
            port: 9877
            protocol: TCP
          - name: client-snapshots
            port: 9878
            protocol: TCP
          - name: client-support
            port: 9881
            protocol: TCP
  UiDeployment:
    Type: "Custom::KubeManifest"
    Version: '1.0'
    Properties:
      ServiceToken: !Ref KubeManifestLambdaArn
      KubeConfigPath: !Sub "s3://${KubeConfigS3Bucket}/${KubeConfigS3Key}"
      KubeConfigKmsContext: !Ref KmsContext
      Manifest:
        apiVersion: v1
        kind: Service
        metadata:
          name: client-ui
          annotations:
            service.beta.kubernetes.io/aws-load-balancer-internal: 0.0.0.0/0
            service.beta.kubernetes.io/aws-load-balancer-proxy-protocol: '*'
            service.beta.kubernetes.io/aws-load-balancer-type: nlb
            service.beta.kubernetes.io/aws-load-balancer-backend-protocol: 'tcp'
            service.beta.kubernetes.io/aws-load-balancer-ssl-ports: "tcp"
            service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: "60"
          labels:
            app: client
            tier: master
        spec:
          type: LoadBalancer
          selector:
            app: client
            tier: master
          ports:
          - name: client-ui
            port: 80
            protocol: TCP
            targetPort: 8800
          - name: client-ui-https
            port: 443
            protocol: TCP
            targetPort: 8800

Answer 1

这是我的YAML示例

Resources:
  LoadBalancer:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      Name: !Ref EnvironmentName
      Subnets: !Ref Subnets
      SecurityGroups:
        - !Ref SecurityGroup
      Tags:
        - Key: Name
          Value: !Ref EnvironmentName

  LoadBalancerListener:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      LoadBalancerArn: !Ref LoadBalancer
      Port: 80
      Protocol: HTTP
      DefaultActions:
        - Type: forward
          TargetGroupArn: !Ref DefaultTargetGroup

必须包含LoadBalancer和LoadBalanceListener。然后，您必须添加输出，这些输出声明您希望Description stacks API调用可用的值。

Outputs:
  LoadBalancer:
    Description: A reference to the Application Load Balancer
    Value: !Ref LoadBalancer

  LoadBalancerUrl:
    Description: The URL of the ALB
    Value: !GetAtt LoadBalancer.DNSName

  Listener:
    Description: A reference to a port 80 listener
    Value: !Ref LoadBalancerListener