About Server Setup
In Cisco Unified Communications Manager Administration, use the menu path to add and configure a server.
Use the Server Configuration window to specify the address of the server where Cisco Unified Communications Manager or Cisco Unified Communications Manager IM and Presence Service is installed.
You must add and configure new servers using Cisco Unified Communications Manager Administration prior to their installation. The server type you configure must match the server type you install. To install a node on a cluster, see the Cisco Unified Communications Manager Installation Guide.
Server Setup Tips
Before you configure a server, review the following information:
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Make sure that you only add each server once in the Server Configuration window. If you add a server by using the hostname and add the same server again by using the IP address, Cisco Unified Communications Manager cannot accurately determine component versions for the server after a Cisco Unified Communications Manager upgrade. If you have two entries in Cisco Unified Communications Manager Administration for the same server, delete one of the entries before you upgrade.
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When you perform a fresh installation of Cisco Unified Communications Manager, you must define any subsequent servers (nodes) in the Server Configuration window using Cisco Unified Communications Manager Administration before you can install Cisco Unified Communications Manager or IM and Presence Service on each subsequent server. To define a subsequent node, click Add New and proceed to configure the server. After you add the subsequent server, you can then install the Cisco Unified Communications Manager or IM and Presence Service software on that server.
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If you use IPv4 in your network, you must update the DNS server with the appropriate Cisco Unified Communications Manager name and address information before you use that information to configure the Cisco Unified Communications Manager server.
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For DNS, make sure that you map the IP addresses of all servers, including dummy nodes, to the host names on the DNS server. If you do not perform this task, Cisco Unified Communications Manager generates alarms that inform you that the License Manager service is down.
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Cisco Unified Communications Manager Administration does not prevent you from updating the Host Name/IP Address field under any circumstances.
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When you attempt to change the IP address in the Server Configuration window, the following message displays after you save the configuration: "Changing the host name/IP Address of the server may cause problems with Cisco Unified Communications Manager. Are you sure that you want to continue?" Before you click OK, make sure that you understand the implications of updating the Host Name/IP Address field; for example, incorrectly updating this setting may cause Cisco Unified Communications Manager to become inoperable; that is, the database may not work, you may not be able to access Cisco Unified Communications Manager Administration, and so on. In addition, updating this field without performing other related tasks may cause problems for Cisco Unified Communications Manager.
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Changes to the server configuration do not take effect until you restart Cisco Unified Communications Manager. For information about restarting the Cisco CallManager service, see the Cisco Unified Serviceability Administration Guide.
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For additional information on changing the IP address or host name, see the document Changing the IP Address and Host Name for Cisco Unified Communications Manager.