As a starting note: The best way to troubleshoot is with cdk [command] --verbose
(see CLI ref)
CDK has an internal mechanism for finding credentials not directly using AWS CLI (AWS CLI is not a requirement for CDK to run)
In a similar situation with a CI tool, the issue was simply that the ~/.aws/credentials
file did not exist (not that you need it with AWS CLI, but in the situation for CDK, it was required)
Credit to this issue reporting: https://github.com/aws/aws-cdk/issues/6947#issue-586402006
Solution tested for above:
For an EC2 running CI tool, with EC2 IAM role
Where ~/.aws/config exists and defined profile(s) with:
- credential_source = Ec2InstanceMetadata
- role_arn = arn:aws:iam:::role/role-to-assume-in-acctId
Create empty ~/.aws/credentials file
Example error for the problem solved above (from verbose output)
Resolving default credentials
Notices refreshed
Unable to determine the default AWS account: ProcessCredentialsProviderFailure: Profile myprofile did not include credential process
Other causes found in other issues/comments could relate to: