Customize Application Rules

Last update: March 25 2025

Customize Application Rules

Application Rules — A way to manage traffic based on specific requests. You can create advanced load balancing rules that cannot be configured through the Application Profiles or by using other services on the Edge router.

Create a rule⁠

1. From control panels open the Cloud Director panel: in the top menu, click Products → VMware-based cloud → section Cloud Director.

2. Open the virtual data center page.

3. Go to the section Networking → Edges.

4. Open the page of the desired Edge.

5. Click SERVICES.

6. Open the tab Load Balancer → Application Rules.

7. Click +.

8. Enter the name of the rule.

9. Insert a script that will determine the balancing:

   In the other pool

   If the primary pool fails, traffic can be redirected to another balancing pool. For the rule to work, multiple pools must be configured on the balancer. All members of the primary pool must be in the state of down. Script view:

   acl pool_down nbsrv(<primary_pool_name>) eq 0
   use_backend <secondary_pool_name> if <primary_pool_name>

   Specify:

   • <primary_pool_name> — name of the main pool;
   • <secondary_pool_name> — name of the pool to which the traffic will be redirected.

   To an external resource

   If all members of the main pool are in the state of downThe traffic can be redirected to an external website using a script:

   acl pool_down nbsrv(<pool_name>) eq 0
   redirect location <url> if pool_down

   Specify:

   • <pool_name> — name of the main pool;
   • <url> — Web site URL.

10. Click KEEP.

Add a rule to the virtual server⁠

1. From control panels open the Cloud Director panel: in the top menu, click Products → VMware-based cloud → section Cloud Director.
2. Open the virtual data center page.
3. Go to the section Networking → Edges.
4. Open the page of the desired Edge.
5. Click SERVICES.
6. Open the tab Load Balancer → Virtual Servers.
7. Highlight virtual server.
8. Click .
9. Open the tab Advanced.
10. Click +.
11. Add rule.