AWS Launch Configuration error: The requested configuration is currently not supported

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I have created a Launch Configuration with which I am creating a Auto Scaling Group.

When I create the Auto Scaling Group from the Launch Configuration, I get the below error:

Description:DescriptionLaunching a new EC2 instance. Status Reason: The requested configuration is currently not supported. Please check the documentation for supported configurations. Launching EC2 instance failed.

Cause:CauseAt 2017-08-15T10:54:52Z an instance was started in response to a difference between desired and actual capacity, increasing the capacity from 0 to 1.

I looked around and only found this link. However, it doesn't tell me what exactly isn't supported, so doesn't help much.

My Launch Configuration looks like this:

enter image description here

My Auto Scaling Group looks like this:

enter image description here

And:

enter image description here

Sorry I had to block some items out as it has the client's data.

Any input will help. As there is no information anywhere in the logs, I don't know where to go from here.

PS: I have tried changing the Instance Type but had no luck. Thought that might be the cause but apparently not.

amazon-web-services
7 Answers

There will be different answers to this question, but as Raf said a good place to start is your VPC, subnet, instance types, and AMI.

My issue was that AWS deprecated my instance type (m3) in my specific region. Easiest way to check is to go to the EC2 tab in AWS console and try to launch your specific setup manually.

user_5520360

I got this same error and after knocking my head against the wall for a while (and testing a lot) in my case the culprit was that I had the ebs-optimized flag enabled on my launch template

user_70287870

Manual launching of instance via EC2 was the only thing that helped: I noticed that InstanceType that was eligible for Free Tier was t3.micro, while one in my lab's template was t2.micro. Apparently using t2.micro for my ImageId was resulting in infamous 'requested configuration is currently not supported' error, at attempting to create instances defined by the template.

Once I was able to manually launch specified ImageId and InstanceType, I was able to replicate it with CloudFormation template and finally create stack successfully.

user_120416100

I too, was facing this issue because my VPC was set to dedicated tenancy. The error message today is very helpful, in saying that

The requested configuration is currently not supported. Please check the documentation for supported configurations.

(without providing any link to this documentation). I wanted to link it here for anyone who is looking for it-

This page mentions that

Some instance types cannot be launched into a VPC with the instance tenancy set to dedicated.

Changing my instance type to one of those mentioned here fixed this issue for me. I did not have to create a new VPC with default tenancy, although that is also a good solution if you have the permission to do that.

user_41152140

I had a default tenancy and had no desire to change it. In my case the solution was to change the instance type. Simple as that. Simply changed from "Amazon Linux 2" to "Ubuntu 20.04".

user_114039020

In my case it was because of using instance type unavailable for specific AWS region.

user_37580050
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