Cloudformation: ECS TaskDefinition CloudWatch logs retention policy

Question

Is it possible to specify a CloudWatch logs retention policy in an ECS Task definition? Couldn't find any documentation about it.

ServiceTaskDefinition:
  Type: AWS::ECS::TaskDefinition
  Properties:
    ExecutionRoleArn: !GetAtt EcsTaskExecutionRole.Arn
    TaskRoleArn: !GetAtt EcsTaskRole.Arn
    Cpu: !Ref TaskDefinitionCpu
    Memory: !Ref TaskDefinitionMemory
    NetworkMode: awsvpc
    ContainerDefinitions:
      - Name: !Join ['-', ['container', !Ref AWS::StackName]]
        Image: !Ref EcrImage
        PortMappings:
          - ContainerPort: !Ref Port
            HostPort: !Ref Port
            Protocol: tcp
        Essential: true
        LogConfiguration:
          LogDriver: awslogs
          Options:
            awslogs-group: !Join ['', ['/ecs/', !Ref AWS::StackName]]
            awslogs-region: !Ref AWS::Region
            awslogs-stream-prefix: ecs
            awslogs-create-group: true
            # Retention policy ??

Answer 1

Agree with other answer that there is no option to specify log retention in awslogs options

We need to create it and pass it along:

  CloudwatchLogsGroup:
    Type: 'AWS::Logs::LogGroup'
    Properties:
      LogGroupName: !Sub '${AWS::StackName}-ECSLogGroup'
      RetentionInDays: 14

Container Definition:

  ContainerTaskdefinition:
    Type: 'AWS::ECS::TaskDefinition'
    Properties:
      Family: !Ref 'AWS::StackName'
      ExecutionRoleArn: !Ref ECSTaskExecutionRole
      TaskRoleArn: !Ref ECSTaskExecutionRole
      Cpu: '256'
      Memory: 1GB
      NetworkMode: awsvpc
      RequiresCompatibilities:
        - EC2
        - FARGATE
      ContainerDefinitions:
        - Name: !Ref 'AWS::StackName'
          Cpu: 256
          Essential: 'true'
          Image: !Ref Image
          Memory: '1024'
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-group: !Ref CloudwatchLogsGroup <-- refer to log group
              awslogs-region: !Ref 'AWS::Region'
              awslogs-stream-prefix: ecs