Specifying AWS Regions - AWS Tools for PowerShell

Specifying AWS Regions

There are two ways to specify the AWS Region to use when running AWS Tools for PowerShell commands:

  • Use the -Region common parameter on individual commands.

  • Use the Set-DefaultAWSRegion command to set a default Region for all commands.

Many AWS cmdlets fail if the Tools for Windows PowerShell can't figure out what Region to use. Exceptions include cmdlets for Amazon S3, Amazon SES, and AWS Identity and Access Management (IAM ), which automatically default to a global endpoint.

To specify the region for a single AWS command

Add the -Region parameter to your command, such as the following.

PS > Get-EC2Image -Region us-west-2

To set a default region for all AWS CLI commands in the current session

From the PowerShell command prompt, type the following command.

PS > Set-DefaultAWSRegion -Region us-west-2

This setting persists only for the current session. To apply the setting to all of your PowerShell sessions, add this command to your PowerShell profile as you did for the Import-Module command.

To view the current default region for all AWS CLI commands

From the PowerShell command prompt, type the following command.

PS > Get-DefaultAWSRegion Region Name IsShellDefault ------ ---- -------------- us-west-2 US West (Oregon) True

To clear the current default Region for all AWS CLI commands

From the PowerShell command prompt, type the following command.

PS > Clear-DefaultAWSRegion

To view a list of all available AWS Regions

From the PowerShell command prompt, type the following command. Note that the third column identifies which Region is the default for your current session.

PS > Get-AWSRegion Region Name IsShellDefault ------ ---- -------------- ap-east-1 Asia Pacific (Hong Kong) False ap-northeast-1 Asia Pacific (Tokyo) False ap-northeast-2 Asia Pacific (Seoul) False ap-south-1 Asia Pacific (Mumbai) False ap-southeast-1 Asia Pacific (Singapore) False ap-southeast-2 Asia Pacific (Sydney) False ca-central-1 Canada (Central) False eu-central-1 EU Central (Frankfurt) False eu-north-1 EU North (Stockholm) False eu-west-1 EU West (Ireland) False eu-west-2 EU West (London) False eu-west-3 EU West (Paris) False me-south-1 Middle East (Bahrain) False sa-east-1 South America (Sao Paulo) False us-east-1 US East (Virginia) False us-east-2 US East (Ohio) False us-west-1 US West (N. California) False us-west-2 US West (Oregon) True

Some Regions might be supported but not included in the results of the Get-AWSRegion cmdlet. An example is the Asia Pacific (Osaka) Region (ap-northeast-3). If you are not able to specify a Region by adding the -Region parameter, try specifying the region in a custom endpoint instead, as shown in the following section.

Specifying a Custom or Nonstandard Endpoint

Specify a custom endpoint as a URL by adding the -EndpointUrl common parameter to your Tools for Windows PowerShell command, in the following sample format.

PS > Some-AWS-PowerShellCmdlet -EndpointUrl "custom endpoint URL" -Other -Parameters

The following is an example using the Get-EC2Instance cmdlet. The custom endpoint is in the us-west-2, or US West (Oregon) Region in this example, but you can use any other supported AWS Region, including regions that are not enumerated by Get-AWSRegion.

PS > Get-EC2Instance -EndpointUrl "https://service-custom-url.us-west-2.amazonaws.com" -InstanceID "i-0555a30a2000000e1"