Public/EC2/Test-ATEC2IsRunningInEC2.ps1
|
function Test-ATEC2IsRunningInEC2 { <# .SYNOPSIS Determine if this code is executing on an EC2 instance .DESCRIPTION Tests for executing on EC2 by trying to read EC2 instance metadata URL .OUTPUTS [boolean] - True if running on an EC2 instance. .EXAMPLE Test-ATEC2IsRunningInEC2 Returns true if EC2; else false .NOTES The result of this call is cached in session variable AwsToolboxIsEC2 so subsequent calls to this function are faster. .LINK https://github.com/fireflycons/aws-toolbox/tree/master/docs/en-US/Test-ATEC2IsRunningInEC2.md #> if (-not (Test-Path -Path variable:AwsToolboxIsEC2)) { try { Invoke-RestMethod -Uri 'http://169.254.169.254/latest/meta-data/instance-id' | Out-Null Set-Variable -Name AwsToolboxIsEC2 -Value $true -Scope Global -Visibility Public } catch { Set-Variable -Name AwsToolboxIsEC2 -Value $false -Scope Global -Visibility Public } } return $AwsToolboxIsEC2 } |