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The following brings you how to set up pfSense Web server load balancing, hoping to give you some help in practical application. Load balancing involves many things, and there are not many theories. There are many books on the Internet. Today, we will use the accumulated experience in the industry to do an answer.

In this tutorial, I will show you how to configure load balancing for Web CVM on pfSense 2.0. Before you begin, assume that you have a configured pfsense, at least two Apache servers are installed and running on your network, and you also need to have some knowledge of pfSense.

Configuration requirements:

1 installed and functioning pfSense 2.0 firewall.

Minimum of 2 Apache2 servers. Have your Apache server configured to synchronize Web files (rsync/ corosync or other options for keeping files up to date through the Web server).

PfSense Settin

PfSense uses load balancers to share the load of some types of traffic on multiple servers, and if you have multiple servers to host applications, you can spread the load across all servers instead of just one server.

1. Set Monitor entry

Click the "Services", "LoadBalancers", "Monitor" tabs.

Click the + plus sign on the right to add a record, enter the name Name and description Description of monitor (I use ApacheClusterMon for both the name and description in this example), set the type Type to HTTP, set the host address Host to an unused IP, HTTP Code saves the default 200OK, and then click Save to save and make the changes take effect (Apply Changes).

2. Establish a server pool (server pool)

Click the + button on the Pools tab to add a pool. In this example, we specify ApacheSrvPool as the service pool name, set Mode to Load Balance, port 80 (this port is the listening port of your backend server, you can also set it to other ports). Set the ApacheClusterMon created in the previous step for this pool, add all your web server IP to the pool in turn (Add to pool), save and apply.

3. Set up a virtual server ("Virtual Servers)

Click the "Virtual Servers" tab and click + to add a record. Specify "Name" and "Description", then set "IP Address" (IP address) with the unused IP you selected earlier, set "Port" to "80", then set "Virtual Server Pool (Virtual ServerPool)" to the pool you created earlier, click "Submit" and apply the changes.

In particular, if any server does not return to the 200OK status (pfSense periodically sends requests to your Web servers to determine if they are running, all servers must reply), the server pool will be taken offline. The best way to avoid downtime is to configure a failover server.

After reading the above about how to set up pfSense Web server load balancing, if you have anything else you need to know, you can find out what you are interested in in the industry information or find our professional and technical engineers for answers. Technical engineers have more than ten years of experience in the industry.

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