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fix(aws-autoscaling): fix an AutoScalingGroup example in the README.md #970

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Oct 19, 2018
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fix(aws-autoscaling): fix an AutoScalingGroup example in the README.md #970

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fix(aws-autoscaling): fix an AutoScalingGroup example in the README.md
jungseoklee Oct 19, 2018
f31c97b
fix(aws-autoscaling): address comments from @eladb
jungseoklee Oct 19, 2018
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11 changes: 7 additions & 4 deletions packages/@aws-cdk/aws-autoscaling/README.md
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Expand Up @@ -9,14 +9,17 @@ An `AutoScalingGroup` represents a number of instances on which you run your cod
pick the size of the fleet, the instance type and the OS image:

```ts
import autoscaling = require('@aws-cdk/aws-autoscaling');
import ec2 = require('@aws-cdk/aws-ec2');

new ec2.AutoScalingGroup(stack, 'ASG', {
const vpc = new ec2.VpcNetwork(stack, 'VPC', {
maxAZs: 3
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No need to limit AZs in this example, just leave new ec2.VpcNetwork(stack, 'VPC')

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Ok, I will remove it.

});

new autoscaling.AutoScalingGroup(stack, 'ASG', {
vpc,
instanceType: new ec2.InstanceTypePair(InstanceClass.Burstable2, InstanceSize.Micro),
machineImage: new ec2.LinuxImage({
'us-east-1': 'ami-97785bed'
})
machineImage: new ec2.AmazonLinuxImage()
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Maybe a small comment explaining what this does

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Sure, I will add it. The AMI does not work for us-west-2. Specifically, I got the following message.

[AWS::AutoScaling::LaunchConfiguration] asgLaunchConfig37FDE42B AMI ami-97785bed is invalid: The image id '[ami-97785bed]' does not exist (Service: AmazonAutoScaling; Status Code: 400; Error Code: ValidationError; Request ID: d9ec164e-d35c-11e8-b28a-e7ee5dc94f2f)

Hence, I think that it is more robust to ec2.AmazonLinuxImage() as an example.

});
```

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