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Validate UpdatePolicy for AutoScalingRollingUpdate

See original GitHub issue

cfn-lint version: (cfn-lint --version) 0.7.2

Description of issue.

Using a template like:

Resources:
  AutoScalingGroup:
    Type: AWS::AutoScaling::AutoScalingGroup
    Properties:
      # ...
      MinSize: "1"
      MaxSize: "1"
      # ...
    UpdatePolicy:
      AutoScalingRollingUpdate:
        MinInstancesInService: 1

will fail at deployment time with an error from CloudFormation like:

AWS::AutoScaling::AutoScalingGroup AutoScalingGroup UPDATE_FAILED: MinInstancesInService must be less than the autoscaling group’s MaxSize

It would be nice to have protection against this. I guess there are other constraints, some are in the docs. I submitted a docs PR for this one.

Issue Analytics

State:
Created 5 years ago
Reactions:1
Comments:5 (3 by maintainers)

Top GitHub Comments

3reactions

kddejongcommented, Oct 2, 2018

Started with rule E3016 to check the basic configuration of the UpdatePolicy (attributes, values are of the correct type), etc.

Moving down the chain to this one next.

2reactions

kddejongcommented, Nov 17, 2018

Sorry @kalpik I lost track of this. I have created pull request #468 totally rewritten to handle conditions on each level. Used your example for adding to tests. Thanks for reporting this.

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