错误：FATAL NoCredentialProviders：链中没有有效的提供者，原因是：EnvAccessKeyNotFound：

Question

I was using aws-runas to run the following aws-cli command:

aws-runas xxx-prod aws s3 ls

I got the following error:

FATAL NoCredentialProviders: no valid providers in chain caused by: EnvAccessKeyNotFound: 
failed to find credentials in the environment. SharedCredsLoad: failed to load profile, xxx- 
prod. EC2RoleRequestError: no EC2 instance role found caused by: RequestError: send request 
failed caused by: Get http://169.254.169.254/latest/meta-data/iam/security-credentials/: 
net/http: request canceled (Client.Timeout exceeded while awaiting headers)

my ~/.aws/credentials file:

[default]
aws_access_key_id=ABC
aws_secret_access_key=XYZ

my ~/.aws/config file:

[default]
region = us-east-1
output = json
[profile xxx-prod]
role_arn=arn:aws:iam::11111111:role/managed-role/AcctAdmin
mfa_serial =arn:aws:iam::2222222:mfa/abc@gmail.com

Answer 1

I was missing the following line in my ~/.aws/config file:

source_profile=default

Adding the above fixed the problem.

My complete ~/.aws/config file:

[default]
region = us-east-1
output = json
[profile xxx-prod]
source_profile=default
role_arn=arn:aws:iam::11111111:role/managed-role/AcctAdmin
mfa_serial =arn:aws:iam::2222222:mfa/abc@gmail.com