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Code Deploy deployment failed with predictive scaling policy configuration error
Hello. This is my first question in re:Post, so I will try to make it clear and concise as much as possible.
We have multiple auto scaling groups each with its corresponding code deploy deployment group. We started to use the predictive scaling policies in our ASGs with forecast-only mode, but after enabling the predictive scaling policies, the code deploy deployments are always failing with the error You must specify PredictiveScalingConfiguration as you can see in the screenshot
I revised the service role of the deployment groups and added this permission policy to its permissions autoscaling:GetPredictiveScalingForecast, but it didn't change anything.
I also added this permission to the IAM role of the EC2 instances, but it didn't do anything too.
I tried to add this permission to the IAM role of the ASG, but it's a service-linked role that I couldn't edit.
The deployment groups' service role already has full access to all auto-scaling permissions.
I don't know what is the missing part or how to add the needed predictive scaling configurations and where to add them.
I really appreciate any help you can provide. Thank you so much for your attention and participation.
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The issue you're experiencing with CodeDeploy deployments failing after enabling predictive scaling policies on your Auto Scaling groups is likely due to a configuration mismatch between CodeDeploy and the new predictive scaling settings.
When you enable predictive scaling on an Auto Scaling group, it introduces new configuration elements that CodeDeploy needs to be aware of. The error message "You must specify PredictiveScalingConfiguration" suggests that CodeDeploy is trying to interact with the predictive scaling features but doesn't have the necessary configuration information.
To resolve this issue, you may need to take the following steps:
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Update your CodeDeploy deployment configuration to include information about the predictive scaling policy. This might involve specifying the PredictiveScalingConfiguration in your deployment group settings.
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Ensure that the IAM role used by CodeDeploy has the necessary permissions to interact with the predictive scaling features of Auto Scaling. While you've added the 'autoscaling:GetPredictiveScalingForecast' permission, you might also need permissions like 'autoscaling:DescribePredictiveScalingPolicies' and potentially others related to predictive scaling.
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Check if there are any conflicts between the scaling policies defined in CodeDeploy and the new predictive scaling policies in your Auto Scaling groups. You may need to adjust your deployment configuration to account for the new scaling behavior.
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Verify that the predictive scaling policy configuration in your Auto Scaling groups is correct. The 'Mode' should be set to 'ForecastOnly' as you mentioned you're using forecast-only mode.
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If you're using a launch template with your Auto Scaling group, ensure that it's properly configured and that CodeDeploy has the necessary permissions to use it.
If these steps don't resolve the issue, you may need to temporarily disable the predictive scaling policies on your Auto Scaling groups, perform a successful deployment with CodeDeploy, and then gradually re-enable and test the predictive scaling features to identify the exact point of conflict.
Remember to thoroughly test any changes in a non-production environment before applying them to your production systems.
Sources
PredictiveScalingPolicyConfiguration - Application Auto Scaling
Troubleshoot Amazon EC2 Auto Scaling: Launch templates - Amazon EC2 Auto Scaling
Troubleshoot Amazon EC2 Auto Scaling issues - AWS CodeDeploy
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