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An error occurred (ValidationException) when calling the CreateActivation


$ sudo aws ssm create-activation --default-instance-name MyServer --iam-role SSMRole --registration-limit 10 --region eu-north-1 --profile AmazonCloudWatchAgent

An error occurred (ValidationException) when calling the CreateActivation operation: Not existing role: arn:aws:iam::<accountid>:role/SSMRole

What does it mean?

AWS error messages are bad as always.

asked 3 years ago334 views
5 Answers

Hi zyles,

Thanks for your interest about Amazon SSM.

According to the public doc

--iam-role (string)
The Amazon Identity and Access Management (IAM) role that you want to assign to the managed instance.

You need to create an IAM role in your account and use it for the --iam-role. I hope this would help you.


answered 3 years ago


Thanks for the reply. I did not help.

The solution is to add "" to trusted relationships on the role. Which your piss poor docs did not include. So I had to Google for 2 hours and end up on stack overflow.

When you make step by step instructions, make sure you don't skip steps.

Then I ran the activation and got the codes.

But guess what? There is no documentation on how to register this instance with these codes.

$ sudo amazon-ssm-agent -register -code "activation-code" -id "activation-id" -region "region"

Does not work, when installing using snap on Ubuntu 18.04.

Every step is 3 hours of guesswork.

The question is very simple.

How do I make my instance show up in SSM?

answered 3 years ago

"Failed to load instance info from vault. RegistrationKey does not exist."


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Your search for "RegistrationKey" did not match any documentation guides. Try a different term.

WHY are you making these USELESS error messages?

answered 3 years ago

Hi zyles,

Sorry to hear you spend so much efforts on this. We will improve the documentation as it's very important for our customers.

If you installed the agent via snap, the binary is under a different folder.
sudo /snap/amazon-ssm-agent/current/amazon-ssm-agent -register -code "activation-code" -id "activation-id" -region "region"

you need to restart the amazon-ssm-agent after registration.

sudo systemctl start
sudo systemctl stop

Edited by: Shihua-AWS on Dec 20, 2019 8:03 PM

answered 3 years ago

Thank you, finally.

answered 3 years ago

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