Functions/AWS/SSM/Invoke-SSMCommand.ps1
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<# .SYNOPSIS Invokes an AWS SSM Command against EC2 instances .DESCRIPTION This command is an extension for AWS PowerShell module to execute script on EC2 Instances similarly as Invoke-Command does on regular PSSessions. It takes direct EC2 instances or AWS reservation objects from pipeline and invokes SSM Commands on those. The specified -DocumentName and -Parameters will be executed synchronously and the response presented on the standard output. If -ScriptBlock is set the script will be executed within a 'AWS-RunPowerShellScript' document. .PARAMETER InstanceId Mandatory - EC2 Instance Id for the target machine .PARAMETER Region Optinal - Region parameter for the EC2 Instance if -InstanceID is specified. .PARAMETER Reservation Accepts an EC2 Reservation pipeline input from Get-Ec2Instance output. .PARAMETER Instance Accepts an Amazon EC2 Instance object from the pipeline .PARAMETER ScriptBlock Optional - Extra ScriptBlock to be executed as a PowerShell Block The block is executed as 'AWS-RunPowerShellScript' .PARAMETER DocumentName SSM Document to be executed on the target EC2 Instances Default is 'AWS-RunPowerShellScript' to accept -ScriptBlock .PARAMETER Parameter Optional - Parameter Hash to be passed as key-value pairs to the SSM Document. .PARAMETER EnableCliXml Optional - Switch to enable PowerShell CliXml serialization for custom scriptblocks and deserialization for any response .EXAMPLE Get-Ec2Instance | Invoke-SSMCommand { iisreset } .EXAMPLE Invoke-SSMCommand { Resolve-DnsName 'google.com' } -InstanceId i-4660a819 -Region us-west-2 .EXAMPLE Get-Ec2Instance -InstanceId i-4660a819 -Region us-west-2 | Invoke-SSMCommand { whoami } -OutputS3BucketName 'my-bucket' -OutputS3KeyPrefix 'ssm-logs' #> function Invoke-SSMCommand { [CmdletBinding(DefaultParameterSetName='ByInstanceId')] [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseShouldProcessForStateChangingFunctions","")] param( [Parameter(Mandatory=$true,ParameterSetName="ByInstanceId")] [string[]]$InstanceId, [Parameter(ParameterSetName="ByInstanceId")] [string]$Region=$(Get-DefaultAWSRegion | Select-Object -ExpandProperty Region), [Parameter(Mandatory=$true,ParameterSetName="ByReservationObject", ValueFromPipeline=$true)] [Amazon.EC2.Model.Reservation]$Reservation, [Parameter(Mandatory=$true,ParameterSetName="ByInstanceObject", ValueFromPipeline=$true)] [Amazon.EC2.Model.Instance[]]$Instance, [Parameter()] [string]$DocumentName='AWS-RunPowerShellScript', [Parameter(Position=0)] [scriptblock]$ScriptBlock, [Parameter(Position=1)] [hashtable]$Parameter, [Parameter()] [string]$OutputS3BucketName=$Script:DefaultSSMOutputS3BucketName, [Parameter()] [string]$OutputS3KeyPrefix=$Script:DefaultSSMOutputS3KeyPrefix, [Parameter()] [Alias('CliXml')] [switch]$EnableCliXml, [Parameter()] [System.Int32]$TimeoutSecond, [Parameter()] [System.Int32]$SleepMilliseconds=400 ) begin { Add-Type -AssemblyName System.Web $script:SSMInvocations = @{} Write-Verbose "Constructing Parameters.." if($DocumentName -eq 'AWS-RunPowerShellScript') { Write-Verbose "Running with generic PowerShell scriptblock.." if ($EnableCliXml) { Write-Verbose "Wrapping Scriptblock for CLIXML.." $Parameter = @{'commands'=@( '$ConfirmPreference = "None"' '$tempFile = [System.IO.Path]::GetTempFileName()' "& { $($ScriptBlock.ToString()) } | Export-Clixml -Path `$tempFile" 'Get-Content -Path $tempFile' )} } else { $Parameter = @{'commands'=@( '$ConfirmPreference = "None"' $ScriptBlock.ToString() )} } } elseif ($DocumentName -eq 'AWS-RunShellScript') { Write-Verbose "Running with generic Shell ScriptBlock.." $Parameter = @{'commands'=@($ScriptBlock.ToString())} } } Process { # Convert all input into Instance list if ($Reservation) { $Instance = $Reservation.Instances } if ($InstanceId) { $Instance = $InstanceId | Foreach-Object { New-Object psobject -Property @{ InstanceId = $_ Placement = @{ AvailabilityZone="$($Region)x" } } } } Write-Debug "Processing $Instance ..." foreach ($i in $Instance) { $id = $i.InstanceId $Region = ($i | Select-Object -ExpandProperty Placement | Select-Object -ExpandProperty AvailabilityZone) -replace '\w$','' Write-Verbose "Targeting: $id @ $Region" Write-Verbose "Executing $DocumentName with `n $($Parameter.Keys | ForEach-Object { $Parameter.$_ | Out-String }).." if (-Not $Region) { Write-Warning "Region is not set, execution may fail.." } else { Write-Debug "Setting region to $Region .." Set-DefaultAWSRegion -Region $Region } $SSMCommandArgs = @{ InstanceId=$id DocumentName=$DocumentName Comment="Invoked by $($env:USERNAME)@$($env:USERDOMAIN) from CloudRemoting@$($env:COMPUTERNAME)" } if ($Parameter) { $SSMCommandArgs.Parameter = $Parameter } if ($OutputS3BucketName) { $SSMCommandArgs.OutputS3BucketName = $OutputS3BucketName } if ($OutputS3KeyPrefix) { $SSMCommandArgs.OutputS3KeyPrefix = $OutputS3KeyPrefix } if ($TimeoutSecond) { $SSMCommandArgs.TimeoutSecond = $TimeoutSecond } try { $ssmCommand=Send-SSMCommand @SSMCommandArgs $script:SSMInvocations.$id = $ssmCommand } catch { Write-Error $_.Exception continue } } } end { Write-Verbose "Collecting results $($script:SSMInvocations)" while ($script:SSMInvocations.Keys.Count -gt 0) { $id = $script:SSMInvocations.Keys | Get-Random $i = $script:SSMInvocations.$id Write-Verbose "Waiting for $($i.InstanceIds) - $($i.CommandId) - $($i.Status) command..." $currentCommand=Get-SSMCommand -CommandId $i.CommandId -ErrorAction SilentlyContinue if (($null -eq $currentCommand) -or ($currentCommand.Status -imatch 'Success|Fail')) { $script:SSMInvocations.Remove($id) Get-SSMCommandResult -CommandId $i.CommandId -InstanceId $id -EnableCliXml:$EnableCliXml } Start-Sleep -Milliseconds $SleepMilliseconds } } } |