The Global Service Load Balancing (GSLB) feature enables load balancing at the DNS level. This means that client requests are directed by a load balancer using intelligent algorithms to route traffic to the data center closest to the client’s geographical location.

In this section, you’ll learn how to manage GSLB farms using the RELIANOID appliance. This farm profile oversees all load balancing services and applications at the DNS level, allowing you to manage these farms and redirect client requests to the most appropriate services.

The diagram below illustrates a use case for load balancing across various data centers using GSLB infrastructure for an HTTPS webpage (e.g., mydomain.com).

GSLB Farms Lists #

Each farm holds specific properties, described below along with their respective fields:

Name: A unique and descriptive name of the farm.
Virtual IP: The IP address receiving the incoming traffic.
Virtual Port: The port managing the traffic.
Status: Indicators of farm availability.

• Green: Up. The farm is running and all servers are operational.
• Red: Down. The farm has stopped running.
• Black: Critical. The farm is up, but there is no server response, or all servers are in maintenance mode.
• Blue: Problem. The farm is running, but at least one server is down.

GSLB Farm Actions #

Below is a description of the available farm actions.

Edit: Modify the farm Name, Virtual IP, and Virtual Port. Note: the farm Name can only be changed when the farm is down.
Restart: Reboot an active farm to apply a new configuration.
Stop: Turn off an active farm.
Start: Start the farm if it is down.
Delete: Remove all configuration files. The IP(s) and PORT(s) will be released for use by another farm.

Next step, create a GLSB farm.