Powershell script to modify eks nodegroup across multiple accounts

Question

Hi everyone, Need assistance with writing a PS script that will log into different AWS GovCloud accounts and modify the eks nodegroup. I know the eks command would be like this "aws eks update-nodegroup-config --cluster-name <name>, --nodegroup-name <name> minSize=#,maxSize=#,desiredSize=#"

But I'm not sure how to get the creds to log into each account? We use SSO if that helps. Don't want to create a new IAM user/role if possible.

Accepted Answer

I learned for the first time that AWS SSO is also available in AWS GovCloud.  
I believe this would allow us to manage multiple accounts.  
https://docs.aws.amazon.com/govcloud-us/latest/UserGuide/govcloud-sso.html

The following documents may be of use to you.  
https://aws.amazon.com/jp/blogs/containers/a-quick-path-to-amazon-eks-single-sign-on-using-aws-sso/

If the above is difficult, it will be necessary to create a cross-account access IAM role or take other action.  
https://docs.aws.amazon.com/IAM/latest/UserGuide/tutorial_cross-account-with-roles.html

Powershell script to modify eks nodegroup across multiple accounts

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