FortiADC Integration with One-Click GSLB
Perform the following steps to configure GSLB. This section is split into two parts:
- New customers—for customers who are new to GSLB.
- Returning customers—assumes you already know how to enable GSLB.
New customers
Follow the steps to set up GSLB for the first time.
Link the FortiADC to GSLB
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The FortiADC device must be registered. Check this under FortiADC > System > FortiGuard > Support Contract > Registration. |
- Log into FortiADC.
- Navigate to Security Fabric > Fabric Connectors > GSLB) Click edit on the far right. Here you will connect FortiADC to GSLB.

- Configure basic settings.
- Set status to on - on/off (enable/disable GSLB service)
- Set the interval to the default (15) - How often the FortiADC will attempt to connect to the One-Click Cloud Server.
- Set the Cloud Server URL to the default (https://1click.fortigslb.com) - URL of the One-Click Cloud Server.
- Click Save.


Ensure the Cloud Status on the top is green. Green means the connection has succeeded, whereas red indicates failure. The Assigned DNS Server shows the DNS server address. "Not assigned" means the DNS Server is not assigned.
If it is red, moving the cursor onto it will result in an error message showing up.
There may be some lag time. Refresh if necessary.
- In a second browser tab/window, log into FortiAppSec Cloud, and navigate to GSLB. Refresh the page to check if your organization now appears on the Management Console dashboard. The default organization is labeled 'Default.' For details on the current dashboard, refer to the Overview section.
- Return to FortiADC > root > Server Load Balance > Virtual Server. Create a virtual server with GSLB enabled and set the Host/Domain name. Go to General and enable the One Click GSLB Server. This will reveal the Host Name and Domain Name.

- After you save, the virtual server's information will show in WAF > System > Settings > GSLB (or WAF > Security Fabric > Fabric Connectors > GSLB for FortiADC releases 6.0 and above). Your virtual servers should show up at the bottom under Virtual Server. If configured correctly, the FortiADC will send the IP addresses, host name and domain name to GSLB, which will then load-balance with these virtual servers.

If over 50 virtual servers have enabled GSLB, we recommend using at least 30 seconds as GSLB's interval.
View virtual servers in GSLB
- Go to GSLB and click into individual organization. In this example we are selecting the default organization, "default". We will see the virtual servers in GSLB.
- In the individual organization, go to Fabric Connectors. The name is the FortiADC serial number. The type is FortiADC. The data center is the default or the first data center you already configured in Cloud. Click edit and you will see your virtual servers. Note: The load balancing may take a little while to start when the "green" is lit in the FortiADC.
- In Profiles > Pool you will see the automatically generated virtual server pools that the Cloud has done for you. Click edit on the far right to see the IP addresses of the virtual servers. They are pooled according to your PREFERRED method. See the Virtual Server Pool section for more information.
Returning customers
This section assumes that you have already enabled GSLB and know how to create new virtual servers with GSLB enabled.
To add more virtual servers into GSLB and support certain services:
- Go to FortiADC > Server Load Balance > Virtual Server > edit Virtual Server > General > Enable One Click GSLB Server and enter Host/Domain Name.

- After you save, all the virtual servers that enabled GSLB will show up in the list.

Further steps for modifications:
If you want to modify FQDN host/domain name or disable Virtual Server GSLB function, there are two ways.
Method 1
Go to GSLB to edit the virtual server that has already enabled GSLB.
From GSLB 2.0.0, FortiADC supports editing the virtual server directly inside the FortiADC GSLB module.
You can edit the Virtual Server and modify One Click GSLB-related parameters. To do so, disable One Click GSLB server. The virtual server will disappear from GSLB list afterwards.
Method 2
Go to FortiADC > Server Load Balance > Virtual Server > edit Virtual Server > General. You can modify the FQDN host/domain name or disable Virtual Server GSLB function here.
How to transform FortiADC GSLB to FortiAppSec Cloud GSLB
|
Object type |
FortiADC location |
FortiAppSec Cloud location |
|---|---|---|
| Data Center |
Global Load Balance > Global Object > Data Center |
GSLB > Virtual Server > Data Center |
| Server |
Global Load Balance > Global Object > Server |
GSLB > Virtual Server > Fabric Connectors |
| Location |
Global Load Balance > FQDN Settings > Location List |
GSLB > Service > Location |
| Virtual Server Pool |
Global Load Balance > FQDN Settings > Virtual Server Pool |
GSLB > Service > Virtual Server Pool |
| FQDN |
Global Load Balance > FQDN Settings > Host |
GSLB > Service > FQDN |
| Zone |
Global Load Balance > Zone Tools > Zone |
GSLB > DNS |
| Health Check |
Shared Resources > Health Check > Health Check |
GSLB > Health Check |
Add FQDN with FortiADC
Perform the following steps to add an FQDN with FortiADC.
- Create FQDN in GSLB services.
- Create FQDN member and create new Virtual Server Pool. Then choose the virtual server from FortiADC into Pool. The virtual server from FortiADC will now work in GSLB services.
- FortiADC virtual servers are synced with the Cloud, so please make sure to select the correct virtual server when adding it to the Pool