====== Install Octopus Tentacle on Windows Deployment Targets ======

Each node that will be a deployment target needs to have a tentacle agent installed.

  - First, Install .Net 4.5 framework.
  - Install tentacle MSI from [[http://octopus.com/downloads/]]
  - The Tentacle Setup Wizard should launch after the setup is complete.
  - For "Storage", Accept the defaults, then click "Next".
  - Choose "Listening Tentacle", and then click "Next".
  - Accept the default Listen port and add the server thumbprint from the server (Configuration --> Certificates) page.
  - Click Next, then click "Install"
  - When the setup wizard completes, Click ''Add deployment target'' back in the server UI for the the appropriate environment.
    * Click "Listening Tentacle" for Target Type.
    * Type the hostname of the deployment target.
    * Click ''Discover''
    * On ''Settings'', Give the deployment target a meaningful name such as web01 or app01 as appropiate for the role.
    * For ''Roles'', type the appropiate role for the target. Examples are: ''web'', ''app'', ''api'', ''db'', and ''service''
  - Repeat for remaining deployment targets.


I typically use this script to install the Tentacles:<code powershell>
$DeployDirectory = "D:\"
$Thumbprint = Read-Key "Enter Octopus Server Thumbprint"
###########################################################################
# Install Octopus Tentacle
$url = "https://octopus.com/downloads/latest/OctopusTentacle64"
$downloadPath = "$env:TEMP\octopus\"
 
if (Test-Path $downloadPath) {
    Remove-Item -Path $downloadPath -Recurse -Force
}
 
New-Item -Type Directory -Path $downloadPath | Out-Null
 
[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12
(New-Object System.Net.WebClient).DownloadFile($url, "$downloadPath\Octopus.Tentacle.msi")
 
& "$downloadPath\Octopus.Tentacle.msi" /passive

while ((Get-Process | where { $_.ProcessName -eq 'msiexec' } | Measure-Object).Count -ne 1) {
    Start-Sleep -Seconds 1
}
 
Write-Output "Octopus Tentacle Installed."
 
###########################################################################
# Configure Octopus Tentacle
 
Push-Location "C:\Program Files\Octopus Deploy\Tentacle"
 
& .\Tentacle.exe create-instance --instance "Tentacle" --config "C:\Octopus\Tentacle.config"
& .\Tentacle.exe new-certificate --instance "Tentacle" --if-blank
& .\Tentacle.exe configure --instance "Tentacle" --reset-trust
& .\Tentacle.exe configure --instance "Tentacle" --home "C:\Octopus" `
    --app "$DeployDirectory " --port "10933" --noListen "False"
& .\Tentacle.exe configure --instance "Tentacle" --trust $Thumbprint
 
netsh.exe advfirewall firewall add rule "name=Octopus Deploy Tentacle" `
    dir=in action=allow protocol=TCP localport=10933
 
& .\Tentacle.exe service --instance "Tentacle" --install --start
 
Pop-Location
 
Write-Output "Octopus Tentacle Configured. You will need to Add this server to Octopus:"
$fqdn = (Get-WmiObject win32_computersystem).DNSHostName+"."+(Get-WmiObject win32_computersystem).Domain
Write-Output "   * $fqdn"
</code>