How do I specify region in aws cloud formation command line tool for windows

Question

I submit this on command line (i'm omitting all the other params that i know to work)

aws cloudformation create-stack ... --parameters ParameterKey=Region,ParameterValue=us-east-1

It yields:

Unable to construct an endpoint for cloudformation in regionNone

If i submit the same exact params using the https://console.aws.amazon.com/cloudformation web ui, it works.

How do i specify region using the aws.exe for windows ? The .json file i use as a template even has it as the default, but it still does not take it if i omit region from the command line

"Region": { "Type": "String", "Description": "Which Region to launch in", "Default": "us-east-1", "AllowedValues": [ "us-east-1", "us-west-1", "us-west-2", "eu-west-1", "ap-northeast-1" ] }

in debug mode i get...

File "awscli\clidriver.pyc", line 206, in main
File "awscli\clidriver.pyc", line 354, in __call__
File "awscli\clidriver.pyc", line 461, in __call__
File "awscli\clidriver.pyc", line 555, in invoke
File "botocore\service.pyc", line 161, in get_endpoint
File "botocore\endpoint.pyc", line 265, in create_endpoint
File "botocore\regions.pyc", line 67, in construct_endpoint
UnknownEndpointError: Unable to construct an endpoint for cloudformation in region None
2014-10-27 22:52:38,631 - MainThread - awscli.clidriver - DEBUG - Exiting with rc 255

Answer 1

The region is an argument of the aws command :

aws --region eu-west-1 cloudformation create-stack --stack-name ...

Answer 2

You can also configure it using aws configure or if already executed you can identify it in ~/.aws/config. Example:

[default]
region=us-east-1

The regions are as follows. See second column.

$ ec2-describe-regions
REGION  eu-central-1    ec2.eu-central-1.amazonaws.com
REGION  sa-east-1   ec2.sa-east-1.amazonaws.com
REGION  ap-northeast-1  ec2.ap-northeast-1.amazonaws.com
REGION  eu-west-1   ec2.eu-west-1.amazonaws.com
REGION  us-east-1   ec2.us-east-1.amazonaws.com
REGION  us-west-1   ec2.us-west-1.amazonaws.com
REGION  us-west-2   ec2.us-west-2.amazonaws.com
REGION  ap-southeast-2  ec2.ap-southeast-2.amazonaws.com
REGION  ap-southeast-1  ec2.ap-southeast-1.amazonaws.com