Web Farm Framework 2.0 for IIS 7 Code Sample

By Randall DuBois

July 21, 2010

This article shows how you can develop and run an application to set up and manage the Web Farm Framework using C# or any other .NET Framework language. The example in this section shows how to use the Web Farm Framework library to create a server farm, add servers to the farm, remove servers from the farm, and then remove the server farm.

Before you begin, you must copy the appropriate version of Microsoft.Web.Farm.dll to your development computer. This library is installed in the GAC on all of the servers in your web farm, including the controller.

To use the Web Farm Framework code sample

  1. Copy the Microsoft.Web.Farm.dll to your development computer.
  2. Create a Visual Studio solution.
  3. Add a reference to the Microsoft.Web.Farm.dll assembly that you copied to your project. This enables you to add the Microsoft.Web.Farm namespace in your code.

  4. Copy the following code into your project:
  5. using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Threading;
    using Microsoft.Web.Farm;
    namespace WebFarmSample
    {
    class Program
    {
    static void CreateWebFarm()
    {
    //WebFarmManager is the class that manages several web farms.
    WebFarmManager webFarmManager = new WebFarmManager();

    //Create a new WebFarm
    WebFarm myWebFarm = webFarmManager.WebFarms.CreateNewWebFarm("MyWebFarm");

    //Provide user name and password for the webfarm. Note that these credentials are
    //used for sync up and load balancing the farm. All the servers in the farms should
    //recognize the credentials.
    myWebFarm.AdminUserName = "Administrator";
    myWebFarm.AdminPassword = "MyPwd";

    //Optionally you can also specify how many number of servers must be online
    //at any given point of time and also how many servers could be stopped at any
    //given point of time.

    //myWebFarm.MinimumServers = 1;
    //myWebFarm.MaximumStoppedServers = 2;

    //This will enable the agent service automatically on the servers
    myWebFarm.AutoEnableAgent = true;

    //Now add a new server to the web farm
    Server srv1 = myWebFarm.Servers.CreateNewServer("MyServer1");

    //Make MyServer1 as Primary server. During the provisioning of application or platform
    //Primary server is used as the primary server from which the application or platforms
    //are provisioned.
    myWebFarm.PrimaryServer = srv1;

    //Add more servers. MyServer2 and MyServer3 acts as secondary servers
    //These two servers gets provisioned before loadbalancing.
    Server srv2 = myWebFarm.Servers.CreateNewServer("MyServer2");
    Server srv3 = myWebFarm.Servers.CreateNewServer("MyServer3");

    //The changes will take effect only after committing the changes.
    //This is a MUST call.
    webFarmManager.CommitChanges();
    }

    static void DeleteWebFarm()
    {
    //WebFarmManager is the class that manages several web farms.
    WebFarmManager webFarmManager = new WebFarmManager();

    //This will delete a web farm and all the connections to
    //the servers in the farm.
    webFarmManager.WebFarms.RemoveWebFarm("MyWebFarm");

    //The changes will take effect only after committing the changes.
    //This is a MUST call.
    webFarmManager.CommitChanges();
    }

    static void Main(string[] args)
    {
    //Create a web farm
    CreateWebFarm();

    //Wait till the users input.
    Console.WriteLine("Watch webfarm being created using your IIS Manager (inetmgr.exe)...");

    string answer = "N";
    Console.WriteLine("Delete Web Farm[Y/N]:");
    while(string.Equals(answer, "N", StringComparison.OrdinalIgnoreCase))
    {
    answer = Console.Read().ToString();
    Thread.Sleep(1000);
    }

    DeleteWebFarm();
    }
    }
    }
  6. Compile your project, and then run the executable on the controller server where Microsoft Web Farm Framework 2.0 is installed.