Create User Profile Service Application using PowerShell in SharePoint 2016

We need User Profile Service Application to consume social features in SharePoint 2016 such as My Sites, User profiles, etc. This PowerShell script creates User Profile Service Application in SharePoint 2016.

Prerequisite: Create my site host prior creating user profile service application.Create My site host using PowerShell in SharePoint

PowerShell to create user profile service application in SharePoint 2016

Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue
  
#Configuration Parameters
$ServiceAppName = "User Profile Service Application"
$ServiceAppProxyName = "User Profile Service Application Proxy"
$AppPoolAccount = "Crescent\SP16_Pool"
$AppPoolName = "Service Application App Pool"
$DatabaseServer ="SP16-SQL"
$UserProfileDB = "Farm_Profile_DB"
$UserProfileSyncDB = "Farm_Profile_Sync_DB"
$UserProfileSocialDB = "Farm_Profile_Social_DB"
$MySiteHostLocation="http://mysite.crescent.com/"

Try {
    #Set the Error Action
    $ErrorActionPreference = "Stop"
   
    #Check if Managed account is registered already
    Write-Host -ForegroundColor Yellow "Checking if the Managed Accounts already exists"
    $AppPoolAccount = Get-SPManagedAccount -Identity $AppPoolAccount -ErrorAction SilentlyContinue
    if($AppPoolAccount -eq $null)
    {
        Write-Host "Please Enter the password for the Service Account..."
        $AppPoolCredentials = Get-Credential $AppPoolAccount
        $AppPoolAccount = New-SPManagedAccount -Credential $AppPoolCredentials
    }
   
    #Check if the application pool exists already
    Write-Host -ForegroundColor Yellow "Checking if the Application Pool already exists"
    $AppPool = Get-SPServiceApplicationPool -Identity $AppPoolName -ErrorAction SilentlyContinue
    if ($AppPool -eq $null)
    {
        Write-Host -ForegroundColor Green "Creating Application Pool..."
        $AppPool = New-SPServiceApplicationPool -Name $AppPoolName -Account $AppPoolAccount
    }
   
    #Check if the Service application exists already
    Write-Host -ForegroundColor Yellow "Checking if User Profile Service Application exists already"
    $ServiceApplication = Get-SPServiceApplication -Name $ServiceAppName -ErrorAction SilentlyContinue
    if ($ServiceApplication -eq $null)
    {
        Write-Host -ForegroundColor Green "Creating User Profile Service  Application..."
        $ServiceApplication =  New-SPProfileServiceApplication -Name $ServiceAppName -ApplicationPool $AppPoolName -ProfileDBName $UserProfileDB -ProfileSyncDBName $UserProfileSyncDB -SocialDBName $UserProfileSocialDB -MySiteHostLocation $MySiteHostLocation
    }
    #Check if the Service application Proxy exists already
    $ServiceAppProxy = Get-SPServiceApplicationProxy | where { $_.Name -eq $ServiceAppProxyName}
    if ($ServiceAppProxy -eq $null)
    {
        #Create Proxy
        $ServiceApplicationProxy = New-SPProfileServiceApplicationProxy -Name $ServiceAppProxyName -ServiceApplication $ServiceApplication -DefaultProxyGroup        
    }
    #Start service instance
    $ServiceInstance  = Get-SPServiceInstance | Where-Object { $_.TypeName -eq "User Profile Service" }
   
    #Check the Service status
    if ($ServiceInstance.Status -ne "Online")
    {
        Write-Host -ForegroundColor Yellow "Starting the User Profile Service Instance..."
        Start-SPServiceInstance $ServiceInstance 
    }
   
    Write-Host -ForegroundColor Green "User Profile Service Application created successfully!"
}
catch {
    Write-Host $_.Exception.Message -ForegroundColor Red
 }
 finally {
    #Reset the Error Action to Default
    $ErrorActionPreference = "Continue"
} 

Once the script execution completed successfully, you can go to Central Administration >> Application Management >> Service Application Page to verify user profile service application is created.

Next step: As for next step, Configuring user profile Import or synchronization by Create a user profile connection and starting a full profile import. Here is how to add new connection for user profile import: How to Add a user profile synchronization connection in SharePoint 2016?