Description
Solution
This article explains how to configure Server Load Balancing on the FortiADC-E.
Solution
To configure server load balancing (SLB) on the FortiADC-E the following items need to be created:
a) Servers.
b) Server pools.
c) Server Instances.
d) Clusters.
On the device GUI, click on Load Balance:
Step 1: Adding Servers.
Add the real servers, 2 Web servers have been chosen in this example. (Server_1 and Server_2)
- Right click on the Servers > Add Server > Choose the protocol (tcp) > Give a name to the Server and mention the IP address and port where the web service is hosted.
- Repeat for Server_1 and Server_2.
- Health Check can be added which can probe the server with ICMP / Layer 4 and Layer 7.
- Use a right click on the Server to get the Health check options.
Step 2: Adding a Server Pool and selecting Server Instance.
Right click on Server Pools > Select Add Server pool and give it a name > Click Commit.
- Right click on the newly created server pool and select Add Server Instance and select Server_1.
- Repeat this to select Server_2.
Note: While adding the server instance, the option "Quiesce" will be seen. This should be used with caution. The recommendation is for this to be disabled (again, depends on the requirement in some cases).
When this option is enabled, only requests with persistence records are sent to the server which might result in sending the sessions only one of the servers
Step 3: Adding a Cluster.
This Cluster represents the Virtual IP facing the clients (users) to access the web servers hosted.
- Right click on Cluster > Add Cluster and give a name to it > Add the virtual IP address and the port number to listen on > Click Commit.
- Now, click on the newly created cluster, on the right hand side of the GUI, click on Settings > Select the Server pool created in Step 2.
Try to access the cluster IP and you should get the web page hosted on the servers.
The following diagram shows how the server selection is performed for the SLB.
a) Servers.
b) Server pools.
c) Server Instances.
d) Clusters.
On the device GUI, click on Load Balance:
Step 1: Adding Servers.
Add the real servers, 2 Web servers have been chosen in this example. (Server_1 and Server_2)
- Right click on the Servers > Add Server > Choose the protocol (tcp) > Give a name to the Server and mention the IP address and port where the web service is hosted.
- Repeat for Server_1 and Server_2.
- Health Check can be added which can probe the server with ICMP / Layer 4 and Layer 7.
- Use a right click on the Server to get the Health check options.
Step 2: Adding a Server Pool and selecting Server Instance.
Right click on Server Pools > Select Add Server pool and give it a name > Click Commit.
- Right click on the newly created server pool and select Add Server Instance and select Server_1.
- Repeat this to select Server_2.
Note: While adding the server instance, the option "Quiesce" will be seen. This should be used with caution. The recommendation is for this to be disabled (again, depends on the requirement in some cases).
When this option is enabled, only requests with persistence records are sent to the server which might result in sending the sessions only one of the servers
Step 3: Adding a Cluster.
This Cluster represents the Virtual IP facing the clients (users) to access the web servers hosted.
- Right click on Cluster > Add Cluster and give a name to it > Add the virtual IP address and the port number to listen on > Click Commit.
- Now, click on the newly created cluster, on the right hand side of the GUI, click on Settings > Select the Server pool created in Step 2.
Try to access the cluster IP and you should get the web page hosted on the servers.
The following diagram shows how the server selection is performed for the SLB.
