Create new service application from existing sharepoint install

To create a new service application from an existing SharePoint install, you can follow these steps:

Prerequisites:

• You have SharePoint Server 2013 or later installed.
• You have the SharePoint Management Shell installed.
• You have the necessary permissions to create a new service application.

Step 1: Open the SharePoint Management Shell

• Open the SharePoint Management Shell by searching for "SharePoint Management Shell" in the Start menu (Windows) or Spotlight (Mac).
• Alternatively, you can open the SharePoint Management Shell by navigating to the SharePoint installation directory, then running the "SharePoint Management Shell" executable.

Step 2: Connect to the SharePoint farm

• In the SharePoint Management Shell, type the following command to connect to the SharePoint farm:

  Add-PSSnapin Microsoft.SharePoint.PowerShell

• This command loads the SharePoint PowerShell snap-in, which allows you to interact with the SharePoint farm.

Step 3: Create a new service application

• To create a new service application, type the following command:

  New-SPServiceApplication -Name <ServiceApplicationName> -ApplicationPool <ApplicationPoolName> -DatabaseName <DatabaseName>

• Replace <ServiceApplicationName> with the name you want to give your new service application.
• Replace <ApplicationPoolName> with the name of the application pool that will host the service application.
• Replace <DatabaseName> with the name of the database that will store the service application's configuration and data.

For example:

New-SPServiceApplication -Name "My New Service App" -ApplicationPool "My App Pool" -DatabaseName "My Service App DB"

Step 4: Configure the service application

• After creating the service application, you'll need to configure it. You can do this by running the following command:

  Get-SPServiceApplication -Name <ServiceApplicationName> | Set-SPServiceApplication -DatabaseName <DatabaseName>

• Replace <ServiceApplicationName> with the name of the service application you created in Step 3.
• Replace <DatabaseName> with the name of the database that you specified in Step 3.

For example:

Get-SPServiceApplication -Name "My New Service App" | Set-SPServiceApplication -DatabaseName "My Service App DB"

Step 5: Start the service application

• To start the service application, type the following command:

  Start-SPServiceApplication -Name <ServiceApplicationName>

• Replace <ServiceApplicationName> with the name of the service application you created in Step 3.

For example:

Start-SPServiceApplication -Name "My New Service App"

That's it! You've created a new service application from an existing SharePoint install.