Followed that exactly and received:

error: Plan apply failed: 1 error occurred:
    	* creating urn:pulumi:fib-dev-ecs::fib::awsx:x:ecs:Cluster$awsx:x:autoscaling:AutoScalingGroup$aws:cloudformation/stack:Stack::app-asg: ROLLBACK_COMPLETE: ["The following resource(s) failed to create: [Instances]. . Rollback requested by user." "Property AvailabilityZones cannot be empty."]

I'm not passing in a

vpc

as shown in the code. All the docs say that it should use the default vpc when one is not passed in.

I explicitly pass in

vpc

and still get the same result .

According to https://docs.aws.amazon.com/autoscaling/ec2/APIReference/API_AutoScalingGroup.html,

AvailabilityZones

is required. The CF template in the AWS console does not include the

AvailabilityZones

property.

This is the outputted template:

AWSTemplateFormatVersion: '2010-09-09'
    Outputs:
        Instances:
            Value: !Ref Instances
    Resources:
        Instances:
            Type: AWS::AutoScaling::AutoScalingGroup
            Properties:
                Cooldown: 300
                DesiredCapacity: 2
                HealthCheckGracePeriod: 120
                HealthCheckType: EC2
                LaunchConfigurationName: "app-asg-1ff1dbd"
                MaxSize: 100
                MetricsCollection:
                -   Granularity: 1Minute
                MinSize: 2
                VPCZoneIdentifier: []
                Tags:
                -   Key: Name
                    Value: app-asg
                    PropagateAtLaunch: true
            CreationPolicy:
                ResourceSignal:
                    Count: 2
                    Timeout: PT15M
            UpdatePolicy:
                AutoScalingRollingUpdate:
                    MaxBatchSize: 1
                    MinInstancesInService: 2
                    PauseTime: PT15M
                    SuspendProcesses:
                    -   ScheduledActions
                    WaitOnResourceSignals: true