Fixes: #11461
This will allow the user to pass a policy to further restrict the use
of AssumeRole. It is important to note that it will NOT allow an
expansion of access rights
I noticed that Terraform is not (anymore) parsing the value of environment variable `AWS_SECURITY_TOKEN` (which was re-added in May 2015: https://github.com/hashicorp/terraform/pull/1785)
Example ENV:
```
AWS_SECURITY_TOKEN="FQo...vgU="
AWS_ACCESS_KEY_ID="A...A"
AWS_SECRET_ACCESS_KEY="I...t"
AWS_DEFAULT_REGION="eu-west-1"
```
This errors with messages akin to "AWS was not able to validate the provided access credentials".
Setting `AWS_SESSION_TOKEN` instead of `AWS_SECURITY_TOKEN` on the other hand works just fine and seems to be in line with what is suggested in the code: d1ac7d3b2e/vendor/github.com/aws/aws-sdk-go/aws/credentials/env_provider.go (L69), making this whole thing a documentation change.
Happy to provide test cases or additional insights though!
This replaces the previous `role_arn` with a block which looks like
this:
```
provider "aws" {
// secret key, access key etc
assume_role {
role_arn = "<Role ARN>"
session_name = "<Session Name>"
external_id = "<External ID>"
}
}
```
We also modify the configuration structure and read the values from the
block if present into those values and adjust the call to AssumeRole to
include the SessionName and ExternalID based on the values set in the
configuration block.
Finally we clean up the tests and add in missing error checks, and clean
up the error handling logic in the Auth helper functions.
This commit enables terraform to utilise the assume role functionality
of sts to execute commands with different privileges than the API
keys specified.
Signed-off-by: Ian Duffy <ian@ianduffy.ie>
* Overriding S3 endpoint - Enable specifying your own
S3 api endpoint to override the default one, under
endpoints.
* Force S3 path style - Expose this option from the aws-sdk-go
configuration to the provider.
This allows specification of the profile for the shared credentials
provider for AWS to be specified in Terraform configuration. This is
useful if defining providers with aliases, or if you don't want to set
environment variables. Example:
$ aws configure --profile this_is_dog
... enter keys
$ cat main.tf
provider "aws" {
profile = "this_is_dog"
# Optionally also specify the path to the credentials file
shared_credentials_file = "/tmp/credentials"
}
This is equivalent to specifying AWS_PROFILE or
AWS_SHARED_CREDENTIALS_FILE in the environment.
This tripped me up today when I was trying to connect using MFA. I had a look at the source and found the token property, tested it out and low and behold it worked!
Hopefully this saves someone else going through the same pain
Paul Stack