Consider supporting multiple AWS profiles via --profile

[jen20]

Working with multiple AWS accounts, I have the AWS CLI configured with different profiles and switch amongst them by changing the AWS_DEFAULT_PROFILE environment variable. It would be good if terraforming respected this setting (which encompasses the keys and the region) in addition to the environment variables.

[dtan4]

If you're using OS X, I recommend to use envchain.
It enables to handle multiple AWS credentials easily and securely 🔑

Like this:

$ envchain --set personal AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY
$ envchain --set company AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY

# w/ personal account profile
$ envchain personal terraforming s3

# w/ company account profile
$ envchain company terraforming s3

Otherwise if you're using another operating system, I don't have any good idea...

[jen20]

The official AWS CLI already has a method for handling this via profiles - as I understand it from the Ruby SDK doc here the Ruby client will attempt by default to use the the shared credentials file as a second preference to environment variables.

To support profiles it looks at first glance necessary to use an instance of these SharedCredentials.

Happy to look at pull requesting this functionality if it's likely to be accepted.

[dtan4]

--profile option was implemented at #135 and released as v0.4.0
Please try this ❗