Powershell Scripts For WCF Site Deployment

A WCF service needs to be deployed to IIS in a web farm environment with 8 physical servers. To simplify the deployment work, I created Powershell scripts to do following job:

1. Check if powershell is installed or not. Prompt error and exit if powershell is not installed.
2. Check if IIS 7 powershell snap-in is installed or not. Install Powershell snap-in silently
    if it's not installed.
3. Create application pool with desired identity
4. Create IIS Site using appPool created in step 3
5. Copy supporting files to related folders
6. Set permission for related folders

There are three scripts in total. The one to run is called Deploy.cmd:

@REM file: Deploy.cmd
@echo off
set PowershellExe="C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
set IISSnapin="C:\Program Files\IIS\PowerShellSnapin\IIsConsole.psc1"

echo.
if not exist %PowershellExe% (
   echo "Powershell 2.0 is not installed. Please install it and try again." 
   endlocal
)

%PowershellExe% -command "& .\InstallPowershellSnapin.ps1"

if not exist %IISSnapin% (
   echo "IIS 7.0 Powershell Snap-in is not installed. Please install it and try again." 
   endlocal
)

%PowershellExe% -psconsolefile %IISSnapin% -command "& .\InstallWcfService.ps1"

The powershell script to install the IIS 7 Snap-in:

# file: InstallPowershellSnapin.ps1

Set-ExecutionPolicy Unrestricted

$LogFile = "DeploymentLog.log"
$SnapinInstallLog = "IIS7PowerShellSnappin.log"
$SnapinFile = "C:\Program Files\IIS\PowerShellSnapin\IIsConsole.psc1"
$SnapinInstaller = "iis7psprov_x64.msi"

Start-Transcript $LogFile -Append -Force

write-host "Checking IIS 7 Powershell Snapin..."

if (! (Test-Path $SnapinFile)) 
{
   write-host "Install IIS 7 Powershell Snap-in..."
   if ( !(Test-Path $SnapinInstaller))
   {
    write-error "`nCan not find IIS 7 Powershell Snap-in."
    exit
   }

   trap {
    write-error "`nInstallation of IIS 7 Powershell Snap-in failed."
   }
   msiexec.exe /i iis7psprov_x64.msi -qn /l* $SnapinInstallLog
   start-sleep -second 10
} 

Stop-Transcript

The last Powershell script to setup IIS:

# file: InstallWcfService.ps1

$MachineName = "Machine123"
$LogFile = "DeploymentLog.log"
$SnappinFile = "C:\Program Files\IIS\PowerShellSnapin\IIsConsole.psc1"

$DeploymentSourceFolder = "DeployFiles"
$SitePath = "C:\inetpub\WCFService"

$SiteName = "WCF Service"
$PortNumber = 80
$AppPoolName = "WCF Service Pool"
$AppPoolAccount = "Domain1\User1"
$AppPoolPassword = "SecretPassword"
$AppPoolType = 3

Start-Transcript $LogFile -Append -Force

write-host "Checking Site Path..."
if ( !(Test-Path $SitePath))
{
    write-host "Creating Site Path"  $SitePath
    trap {
        write-error "Error in creating site path:" $_.Exception.Message  
    }
    mkdir $SitePath > $null
 
    $SitePathPermission = Get-Acl $SitePath
    $AccessRight = New-Object system.security.accesscontrol.
        filesystemaccessrule($AppPoolAccount,"FullControl","Allow")
    $SitePathPermission.SetAccessRule($AccessRight)
    Set-Acl $SitePath $SitePathPermission
}

write-host "Checking application pool..."
$pcAppPool = Get-Item IIS:\AppPools\$AppPoolName 
if ( !$pcAppPool)
{
    Write-Host "Creating application pool..." 
    trap {
    write-error "Error in creating application pool:" $_.Exception.Message 
    }
    new-webapppool -name $AppPoolName > $null
   
    Write-Host "Configuring application pool..." 
    $pcAppPool = Get-Item IIS:\AppPools\$AppPoolName
    $pcAppPool.processModel.userName = $AppPoolAccount
    $pcAppPool.processModel.password = $AppPoolPassword
    $pcAppPool.processModel.identityType = $AppPoolType
    $pcAppPool.managedRuntimeVersion = "v4.0"
    $pcAppPool | Set-Item
}

write-host "Checking IIS Site..."
if ( !(get-website | where {$_.Name -eq $SiteName}))
{
    Write-Host "Creating Site..."     
    trap {
        write-error "Error in creating IIS site:" $_.Exception.Message 
    }
    New-Website -name $SiteName -ApplicationPool $AppPoolName -PhysicalPath $SitePath 
        -port $PortNumber -HostHeader $MachineName > $null
}

Write-Host "Copying deployment files.." 
copy-item $DeploymentSourceFolder\* $SitePath -recurse -force

Write-Host "Deployment completed."
Stop-Transcript