ecs multi-container

Hi, you can define multiple container definitions in your task definition. For example. the following task definition (in YAML) has an Apache HTTP Server container on port 80 and a Node.js Application Server container on port 3000.

Resources:
  TaskDefinition:
    Type: AWS::ECS::TaskDefinition
    Properties:
      Family:
        Fn::Sub: ${AWS::StackName}-TaskDefinition
      Cpu: 256
      Memory: 512
      NetworkMode: awsvpc
      RequiresCompatibilities:
        - FARGATE
      RuntimePlatform:
        OperatingSystemFamily: LINUX
      ExecutionRoleArn:
        Fn::GetAtt: ECSExecutionRole.Arn
      TaskRoleArn:
        Fn::GetAtt: ECSTaskRole.Arn
      ContainerDefinitions:
        - Name: httpd
          Image: httpd:latest
          Command:
            - /bin/sh
            - -c
            - |
              cat <<EOF > /usr/local/apache2/htdocs/index.html
              <h1>It works!</h1>
              <p>Your container hostname is `hostname`.</p>
              EOF

              sed -i \
                  -e 's/^#\(LoadModule .*mod_proxy_http.so\)/\1/' \
                  -e 's/^#\(LoadModule .*mod_proxy.so\)/\1/' \
                  conf/httpd.conf

              cat <<\EOF >> conf/httpd.conf
              <IfModule proxy_module>
              Include conf/extra/proxy.conf
              </IfModule>
              EOF

              cat <<\EOF >> conf/extra/proxy.conf
              ProxyPass "/proxy" "http://localhost:3000/"
              ProxyPassReverse "/proxy" "http://localhost:3000/"
              EOF

              apt update -y && apt install -y curl
              httpd-foreground
          Essential: true
          PortMappings:
            - ContainerPort: 80
              HostPort: 80
              Protocol: tcp
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-region:
                Ref: AWS::Region
              awslogs-group:
                Ref: ECSLogGroup
              awslogs-stream-prefix: httpd
          HealthCheck:
            Command:
              - CMD-SHELL
              - curl -f http://localhost || exit 1
            StartPeriod: 30
        - Name: node
          Image: node:latest
          Command:
            - /bin/sh
            - -c
            - |
              cat <<\EOF > main.js
              const http = require("http");

              const hostname = "0.0.0.0";
              const port = 3000;

              const server = http.createServer((req, res) => {
                res.statusCode = 200;
                res.setHeader("Content-Type", "text/html");
                res.end("<h1>Hello World!</h1>\n");
              });

              server.listen(port, hostname, () => {
                console.log(`Server running at http://${hostname}:${port}/`);
              });
              EOF

              node main.js
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-region:
                Ref: AWS::Region
              awslogs-group:
                Ref: ECSLogGroup
              awslogs-stream-prefix: node
          HealthCheck:
            Command:
              - CMD-SHELL
              - curl -f http://localhost:3000 || exit 1
            StartPeriod: 30

For detailed reference about task definition, read the following documentations.

• https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ecs-taskdefinition.html
• https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task_definition_parameters.html