Domain

A domain is an inter-related set of WebLogic Server resources that are managed as a unit. A domain includes one or more WebLogic Servers, and may include one or more WebLogic Server clusters.

A domain is a self-contained administrative unit. If an application is deployed in a domain, components of that application cannot be deployed on servers that are not a part of that domain. When a cluster is configured in a domain, all of its servers must be a part of that domain as well.

For each domain, you can configure a subset of Weblogic Server resources that apply to all servers and clusters that reside in the domain. These attributes are configured in the Domain node of the Administration Console.

 

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Tasks

Enabling the Domain-Wide Administration Port

WebLogic Server provides the option to enable an SSL administration port for use with all servers in the domain. The administration port is optional, but it provides two capabilities:

• It enables you to start a server in STANDBY state.
• It enables you to separate administration traffic from application traffic in your domain.

The administration port accepts only secure, SSL traffic, and all connections via the port require authentication by a server administrator. Because of these features, enabling the administration port imposes the following restrictions on your domain:

• The Administration Server and all Managed Servers in your domain must be configured with support for the SSL protocol.
• All servers in the domain, including the Administration Server, enable or disable the administration port at the same time.
• After enabling the administration port, you must establish an SSL connection to the Administration Server in order to start any managed server in the domain. This applies whether you start managed servers manually, at the command line, or using Node Manager.
• After enabling the administration port, all Administration Console traffic must connect via the administration port.

To enable the administration port for your domain:

1. First ensure that all servers in the domain are properly configured to use SSL. See Configuring Two-Way SSL for more information.
2. Select the name of the active domain in the left pane to display the domain's configuration attributes.
3. Click the Configuration tab in the right pane.
4. Click the General tab in the right pane.
5. Select the Enable Domain Wide Administration Port attribute to enable the SSL administration port for this domain.
6. In the Administration Port box, enter the SSL port number that server instances in the domain use as the administration port. You can override an individual server instance's administration port assignment on the Advanced Options portion of the Configuration->General tab for the server instance.
7. Click Apply to apply your changes.
8. To start Managed Servers after enabling the administration port, you must establish an SSL connection to the domain's Administration Server. You can do this by specifying the following option at the command line when started the Managed Server:

   -Dweblogic.management.server=https://host:admin_port

   In this argument, host refers to the address of the Administration Server and admin_port is the administration port that the Administration Server uses. Note that you must specify the https:// prefix, rather than http://.

Editing Application Auto Deployment Settings

1. Click the instance node that represents your Domain (for example, myDomain) in the left pane. The domain dialog displays in the right pane showing the tabs associated with this domain.
2. Click the Applications tab.
3. Edit the value in the Auto Update Interval attribute field. Click the Auto Deployed Enabled checkbox to automatically deploy applications when they are installed in the domain.
4. Click Apply to save any changes you made.

Administering SNMP

For more information on how to configure SNMP, see SNMP.

1. Click the instance node that represents your Domain (for example, myDomain) in the left pane. The domain dialog displays in the right pane showing the tabs associated with this domain.
2. On the Configuration tab, click the SNMP tab.
3. Click the checkbox to enable the SNMP service.
4. In SNMP Port, specify the port on which the agent will listen for SNMP requests.
5. In Mib Data Refresh Interval, specify the interval (seconds) MIB values are cached before being refreshed
6. In Server Status Check Interval Factor, specify a value used to determine the interval to check the server status.
7. In Community Prefix, provide the SNMP Community name.
8. Specify the Debug Level.
9. Select Trap Destinations:
   1. To select a Trap Destination, select a trap destination in the list of Available trap destinations and click the right arrow to move the trap destination to the Chosen list. You can select multiple trap destinations by Shift-clicking or Ctrl-clicking trap destinations in the list.
   2. To remove a trap destination, select a trap destination in the list of Chosen trap destinations and click the left arrow to move the trap destination to the Available list. You can select multiple trap destinations by Shift-clicking or Ctrl-clicking trap destinations in the list.

Administering a Different Domain

1. Right-click the instance node that represents your Domain (for example, myDomain) in the left pane. This opens a pop-up menu.
2. Click Create or edit other Domains. The current domain configurations display in the right pane.
3. Click the name of an inactive domain to administer that domain.
4. After you have finished configuring the inactive domain, click the Home icon at the top of the page to return to the active domain.