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Create and Provision a Search Service Application With Powershell

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Here is a Cool Script to Create and Provision a new Search Service Application in SharePoint 2010 using PowerShell.  If you split the roles between servers, you can put (example : $querysever = ” WFE1″

Here is the script.  If you have any questions, do not hesitate. Say thanks if it helped 🙂
$ErrorActionPreference = “Stop”

Add-PSSnapin Microsoft.SharePoint.PowerShell -EA 0

function ConfigureSharePointSearch(
    [Microsoft.SharePoint.Administration.SPIisWebServiceApplicationPool] $appPool,
    [System.Management.Automation.PSCredential] $crawlCredentials,    
    [string] $serviceAppName = “Search Service Application”,
    [string] $searchDatabaseName = “SearchService”,
    [string] $searchServer = $env:COMPUTERNAME,
    [string] $adminServer = $env:COMPUTERNAME,
    [string] $crawlServer = $env:COMPUTERNAME,
    [string] $queryServer = $env:COMPUTERNAME)
{
    Write-Host “Configuring SharePoint Search…”

    Write-Host “appPool: $appPool”
    Write-Host “crawlCredentials: $($crawlCredentials.Username)”
    Write-Host “serviceAppName: $serviceAppName”
    Write-Host “searchDatabaseName: $searchDatabaseName”
    Write-Host “searchServer: $searchServer”
    Write-Host “adminServer: $adminServer”
    Write-Host “crawlServer: $crawlServer”
    Write-Host “queryServer: $queryServer”

    If ($appPool -eq $null)
    {
        Throw “The application pool must be specified.”
    }
    ElseIf ($crawlCredentials -eq $null)
    {
        Throw “The crawl credentials must be specified.”
    }

    Write-Host “Creating $serviceAppName…”
    
    $searchApp = New-SPEnterpriseSearchServiceApplication -Name $serviceAppName `
        -ApplicationPool $appPool -DatabaseName $searchDatabaseName -Debug:$false

    Write-Host (“Starting the SharePoint Search Service instance and Search Admin” `
        + ” component…”)
        
    $adminSearchInstance = Get-SPEnterpriseSearchServiceInstance -Debug:$false |
        Where { $_.Server -match $adminServer }
        
    $admin = $searchApp |
        Get-SPEnterpriseSearchAdministrationComponent -Debug:$false

    if($adminSearchInstance.Status -ne “Online”)
    {
        Write-Host “Provisioning SharePoint Search Service instance…”
        $adminSearchInstance.Provision()
        Start-Sleep 10
    }

    $admin | Set-SPEnterpriseSearchAdministrationComponent `
        -SearchServiceInstance $adminSearchInstance -Debug:$false

    $admin = ($searchApp | Get-SPEnterpriseSearchAdministrationComponent `
        -Debug:$false)

    Write-Host -NoNewLine “Waiting for Search Admin component to initialize…”
    
    While (-not $admin.Initialized) 
    {
        Write-Host -NoNewLine “.”
        Start-Sleep -Seconds 5
        $admin = $searchApp |
            Get-SPEnterpriseSearchAdministrationComponent -Debug:$false
    }
        
    Write-Host
    
    Write-Host “Setting the default content access account…”
    $searchApp | Set-SPEnterpriseSearchServiceApplication `
        -DefaultContentAccessAccountName $crawlCredentials.Username `
        -DefaultContentAccessAccountPassword $crawlCredentials.Password `
        -Debug:$false

    Start-SPEnterpriseSearchQueryAndSiteSettingsServiceInstance $adminServer `
        -Debug:$falseservice

    
    Write-Host “Getting initial topologies…”
    $initialCrawlTopology = $searchApp |
        Get-SPEnterpriseSearchCrawlTopology -Debug:$false
        
    $initialQueryTopology = $searchApp |
        Get-SPEnterpriseSearchQueryTopology -Debug:$false


    Write-Host “Creating new crawl topology…”
    $crawlTopology = $searchApp |
        New-SPEnterpriseSearchCrawlTopology -Debug:$false
        
    $crawlDatabase = Get-SPEnterpriseSearchCrawlDatabase `
        -SearchApplication $searchApp -Debug:$false

  
    Write-Host “Populating new crawl topology…”
    $crawlInstance = Get-SPEnterpriseSearchServiceInstance -Debug:$false |
        Where { $_.Server -match $crawlServer }
        
    $crawlComponent = New-SPEnterpriseSearchCrawlComponent `
        -CrawlTopology $crawlTopology -CrawlDatabase $crawlDatabase `
        -SearchServiceInstance $crawlInstance -Debug:$false


    Write-Host “Activating new crawl topology…”
    $crawlTopology | Set-SPEnterpriseSearchCrawlTopology -Active -Debug:$false

    $initialCrawlTopology.CancelActivate()
    
    Write-Host -NoNewLine “Waiting for initial crawl topology to be inactive…”
    
    Do
    {
        Start-Sleep 5
        Write-Host -NoNewLine “.”
    } While ($initialCrawlTopology.State -ne “Inactive”)
            
    Write-Host


    Write-Host “Creating new query topology…”
    $queryTopology = $searchApp |
        New-SPEnterpriseSearchQueryTopology -Partitions 1 -Debug:$false

    Write-Host “Creating Property Store database…”
    $propertyDatabase = Get-SPEnterpriseSearchPropertyDatabase `
        -SearchApplication $searchApp -Debug:$false


    Write-Host “Setting index partition to use Property Store database…”
    $indexPartition = Get-SPEnterpriseSearchIndexPartition `
        -QueryTopology $queryTopology -Debug:$false
        
    $indexPartition | Set-SPEnterpriseSearchIndexPartition `
        -PropertyDatabase $propertyDatabase -Debug:$false


    Write-Host “Populating new query topology….”
    $queryInstance = Get-SPEnterpriseSearchServiceInstance -Debug:$false |
        Where { $_.Server -match $queryServer }
    
    $queryComponent = New-SPEnterpriseSearchQueryComponent `
        -QueryTopology $queryTopology -IndexPartition $indexPartition `
        -SearchServiceInstance $queryInstance -Debug:$false


    Write-Host “Activating new query topology…”
    $QueryTopology | Set-SPEnterpriseSearchQueryTopology -Active -Debug:$false

    Write-Host -NoNewLine “Waiting for initial query topology to be inactive…”
    
    Do
    {
        Start-Sleep 5
        Write-Host -NoNewLine “.”
    } While ($initialQueryTopology.State -ne “Inactive”)

    Write-Host


    Write-Host “Removing initial topologies…”
    $initialCrawlTopology |
        Remove-SPEnterpriseSearchCrawlTopology -Confirm:$false -Debug:$false
        
    $initialQueryTopology |
        Remove-SPEnterpriseSearchQueryTopology -Confirm:$false -Debug:$false


    Write-Host “Creating service application proxy…”
    $searchProxy = New-SPEnterpriseSearchServiceApplicationProxy `
        -Name “$serviceAppName” -SearchApplication $searchApp -Debug:$false

    Write-Host -Fore Green “Successfully configured SharePoint Search.”
}

function GetServiceAppsAppPool(
    [string] $appPoolName,
    [string] $appPoolUserName)
{
    Write-Debug “Trying to get existing service application pool ($appPoolName)…”
    $appPool = Get-SPServiceApplicationPool $appPoolName -Debug:$false -EA 0

    If ($appPool -ne $null)
    {
        Write-Debug “The service application pool ($appPoolName) already exists.”
        return $appPool
    }
    
    Write-Host “Creating service application pool ($appPoolName)…”

    Write-Debug “Get service account for application pool ($appPoolUserName)…”
    $appPoolAccount = Get-SPManagedAccount -Identity $appPoolUserName `
        -Debug:$false -EA 0

    If($appPoolAccount -eq $null)
    {
        Write-Host “Registering managed account ($appPoolUserName)…”

        Write-Debug “Get credential ($appPoolUserName)…”
        $appPoolCredential = Get-Credential $appPoolUserName

        $appPoolAccount =
            New-SPManagedAccount -Credential $appPoolCredential -Debug:$false
    } 

    If ($appPoolAccount -eq $null)
    {
        Write-Host -Force Red (“Unable to find or create the managed account” `
            + ” ($appPoolUserName).”)

        Exit 1
    }

    $appPool = New-SPServiceApplicationPool -Name $appPoolName `
        -Account $appPoolAccount -Debug:$false

    Write-Host -Fore Green (“Successfully created service application pool” `
        + ” ($appPoolName).”)
    
    return $appPool
}


function ValidateCredentials(
    $credentials)
{
    Write-Debug “Validating credentials ($($credentials.UserName))…”

    $password = [Runtime.InteropServices.Marshal]::PtrToStringAuto(
        [Runtime.InteropServices.Marshal]::SecureStringToBSTR(
            $credentials.Password))
    
    $currentDomain = “LDAP://” + ([ADSI]””).distinguishedName

    $domain = New-Object DirectoryServices.DirectoryEntry(
        $currentDomain,
        $credentials.UserName,
        $password)
    
    trap { $script:err = $_ ; continue } &{
        $domain.Bind($true); $script:err = $null }

    if ($err.Exception.ErrorCode -ne -2147352570)
    {
        Write-Host -Fore Red $err.Exception.Message
        Exit 1
    }
    
    Write-Debug “Successfully validated credentials ($($credentials.UserName)).”
}

function Main()
{
    $searchServer = $env:COMPUTERNAME
    $adminServer = $searchServer
    $crawlServer = $searchServer
    $queryServer = $searchServer
    $serviceAppsAppPoolName = “SharePoint Service Applications”
    $serviceAppsAppPoolUserName = $env:USERDOMAIN + “sppool”
    $serviceAppName = “Search Service Application”
    $searchDatabaseName = “”
    $crawlServiceAccount = $env:USERDOMAIN + “spcrawl”


    Write-Host (“Please enter the password for the default content access account” `
        + ” ($crawlServiceAccount)…”)
        
    $crawlCredentials = Get-Credential $crawlServiceAccount
    ValidateCredentials $crawlCredentials

    $appPool = GetServiceAppsAppPool $serviceAppsAppPoolName `
        $serviceAppsAppPoolUserName
        
    ConfigureSharePointSearch $appPool $crawlCredentials $serviceAppName `
        $searchDatabaseName $searchServer $adminServer $crawlServer $queryServer

}

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