Managing Applications › Manage User-Defined Applications › Assign Servers to an Application

Assign Servers to an Application

Use the Application List to view and manage the servers that host an application.

If the servers that host an application have a contiguous range of IP addresses, assign a server subnet rather than a particular server to an application. Specifying a server subnet optimizes management console performance and enables automatic server assignment.

Reuse your existing server subnets or create an application subnet that more closely aligns with the actual servers that host an application.

An application subnet collects data across a range of server IP addresses, and its subnet mask can be wider or narrower than your existing server subnets. You can reuse an application subnet by assigning it to more than one application.

We recommend assigning a server subnet or application subnet to an application. This approach works best when your server administrator provisions application servers using contiguous IP ranges. Avoid assigning servers to an application. If the host resources change, you must update the application’s server assignment to continue monitor the application.

Assigning a:

• Domain

  Enables the management console to automatically assign all matching servers in the domain to the application, and keep the application server assignments up-to-date as your server subnets change.

  If you have not created domains to separate traffic, assigning the default domain assigns all servers monitored by the management console.

• Range of server IP addresses specified by an existing server subnet or application subnet.

  For example, if you configured the management console to monitor servers using server subnets that closely align with your server VLAN definitions, you can assign the same server subnet to an application.

• New application subnet.

  For example, if you have an existing /22 server subnet, but for a particular application, you know its /26 server subnet definition, create the /26 application subnet and assign it to the application.

• Server.

  You can assign a server from the Server List, or add a new server.

Follow these steps:

1. Click the Administration page.
2. Click Data Monitoring, Applications in the Show Me menu.
3. (Optional) Choose a domain to filter the list of available server subnets and servers.
4. Scroll to the Application List, select an application and click Edit.

   The Application Properties opens.

5. Click Assignments to assign servers to the application.

   For information about assigning servers to an application, click Help.

6. (Optional) Deselect a server subnet, application subnet, or server to unassign it. Note that the console automatically deletes an application subnet when it is not assigned to any applications.
7. If application availability monitoring is enabled, and a load-balancer distributes the application traffic between servers, to enable the management console to check server availability, specify the number of servers that must be available.
8. Click OK.

   If the OK button is disabled, make sure you have assigned a server or subnet to the application, and click Properties to verify the application properties are properly specified.

9. Click the link to synchronize monitoring devices with the current client network, server subnet, and application definitions on the management console.

   Monitoring devices temporarily stop monitoring application performance during synchronization. To minimize interruptions to monitoring, complete all of your changes before synchronizing monitoring devices.

More information:

Managing Tenants

Check Server Availability