CODEWITHSUNDEEP
amazon-web-servicesamazon-ec2aws-sdk
gradusas
gradusas

Reputation: 63

AWS autoscaling - custom scale in process

I have a need to customize scale in event. Specifically I have to trigger scale in event in a controlled way - decrease desired size by 1 and terminate one specific instance. This will be done from AWS SDK.

What is the correct order to issue commands: A) terminate instance, decrease desired size. B) decrease desired size, terminate instance.

I want to avoid situation where Autoscalling will terminate another instance when desired size parameter changes.

Upvotes: 1

Views: 52

Answers (1)

gradusas
gradusas

Reputation: 63

Wading through SDK documentation found exactly what I need. There is API call to terminate an instance in autoscaling group and decrease desired size at the same time.

Documentation and example here: http://docs.aws.amazon.com/sdkforruby/api/Aws/AutoScaling/Client.html#terminate_instance_in_auto_scaling_group-instance_method

Upvotes: 1

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