[z/OS]

Modifying z/OS location service daemon settings

You can modify the location service daemon settings in an administrative console. Location service daemons provide the CORBA location service in support of Remote Method Invocation and Internet Inter-ORB Protocol (RMI/IIOP).

Before you begin

Complete the following items before starting this task:
  • Configure the location service daemon.

    You must first configure the location service daemon in the WebSphere® Application Server customization dialogs. After you configure the daemon, you can modify or view the location service daemon settings from the administrative console.

  • Optionally enable security.
    There is no specific setting to enable Secure Sockets Layer (SSL) for the location service daemon. If you want to use the SSL protocol to encrypt communications to the location service daemon, complete the following items:
    • Enable global security for the cell.
    • Define a valid system SSL repertoire for the location service daemon.
    • Set the z/OS® user ID that is assigned to the location service daemon-started task to the same z/OS user ID that was used to create the key ring.

About this task

The location service daemon is an integral component of the Remote Method Invocation and Internet Inter-ORB Protocol (RMI/IIOP) communication function for the WebSphere Application Server for z/OS. The daemon works with z/OS workload management to distribute RMI requests (for example enterprise bean requests) among application servers in a cell.

When a client makes a remote call to an enterprise bean, a location service daemon determines which servers are eligible to process the request. The location service daemon makes the decision with the z/OS workload management function (WLM). The daemon then routes the request to the selected server, which establishes a CORBA session with the client. Subsequent calls to the same enterprise bean flow directly over the established session.

In a cell, one location service daemon exists for each sysplex node group. A location service daemon process runs on each system that has a node in a sysplex node group. An example of a system is the z/OS operating system on a logical partition (LPAR).

You can now modify the location service daemon settings in an administrative console.

Procedure

  1. Go to the Settings page for the location service daemon to view the help page.
  2. For the administrative console, click System Administration > Node groups > sysplex node group > z/OS location service daemon in the console navigation tree. For the job manager administrative console, click System Administration -> Job manager > z/OS Location Service in the console navigation tree. For the administrative agent administrative console, click System Administration -> Administrative agent > z/OS Location Service in the console navigation tree.
  3. Specify the following values for the location service daemon:
    • The job name
    • The ports on which it listens
    • The IP names on which it listens
    • The start command
    • The start command arguments
    • The SSL repertoire that it uses

Results

The location service daemon settings are modified.