New Release for specific machines

file.ps1

$apiKey = "" #Octopus API Key
$OctopusURL = "" #Octopus URL
 
$Header =  @{ "X-Octopus-ApiKey" = $apiKey }
 
$ProjectName = "" #project name

$EnvironmentName = "" #environment name

[string[]]$filter = "" #Pattern to filter machines. e.g. "*:10934","*db*","http://Webserver1"

###START###
 
#Getting Environment and Project By Name
$Project = Invoke-WebRequest -Uri "$OctopusURL/api/projects/$ProjectName" -Headers $Header| ConvertFrom-Json
 
$Environment = Invoke-WebRequest -Uri "$OctopusURL/api/Environments/all" -Headers $Header| ConvertFrom-Json
 
$Environment = $Environment | ?{$_.name -eq $EnvironmentName}

#getting machines on the environment 
$machines = Invoke-WebRequest -Uri ($OctopusURL + $Environment.Links.Machines) -Headers $Header| ConvertFrom-Json

##Filtering machines for each filter declared on $filder
##If you want to filter by name or URI, comment one of the lines inside the foreach loop
$machineIDs = @()

foreach($f in $filter){

    #$ID = ($machines.Items | ?{$_.name -like $f}).id #Use to filter by machine name on Octopus

    $ID = ($machines.Items | ?{$_.uri -like $f}).id #Use to filter by URI

    if($ID -eq $null){
        write-host "No machine was found with the pattern $f on environment $($environment.Name)" -ForegroundColor Red
    }
    else{
        $machineIDs += $ID
    }

}

If($machineIDs -eq $null){

    #If there are not IDs on $machineIDs and you just proceed, it'll deploy to all machines by default
    #to prevent this scenario, we are adding a Throw here to stop the entire script
    Throw "No machines where found with the pattern/s '$filter' on $($environment.name)" 

}

#Getting Deployment Template to get Next version 
$dt = Invoke-WebRequest -Uri "$OctopusURL/api/deploymentprocesses/deploymentprocess-$($Project.id)/template" -Headers $Header | ConvertFrom-Json 
 
#Creating Release
$ReleaseBody =  @{ Projectid = $Project.Id
            version = $dt.nextversionincrement } | ConvertTo-Json
 
$r = Invoke-WebRequest -Uri $OctopusURL/api/releases -Method Post -Headers $Header -Body $ReleaseBody | ConvertFrom-Json
 
#Creating deployment with the specific machine IDs
$DeploymentBody = @{ 
            ReleaseID = $r.Id #mandatory
            EnvironmentID = $Environment.id #mandatory
            specificmachineIDs =  $machineIDs
          } | ConvertTo-Json
          
$d = Invoke-WebRequest -Uri $OctopusURL/api/deployments -Method Post -Headers $Header -Body $DeploymentBody