3.3

2 Connect Services
30
Adding System Services
A service consists of two parts:
• A network resource, set up as a device in the configuration file (/site/config).
• The service, set up in the service table in the database file (SYSTEM.SERVICE); it uses
the resource to make a connection.
To add a new service to your system, you must design and build the service and select a
network resource for the service to use. If an appropriate resource does not exist, create
one.
Setting up the Service
To set up the service and its resource:
1. Determine whether the service and its resource exists.
Try connecting to a service you want. If it works, then the necessary programs are
installed. If you cannot find the service, or one does not work, call Avid for help.
2. Choose a device number for the resource and a name for the service. In the following
examples, the service name is console.
Check your configuration file (/site/config) to determine the appropriate device number
for your new resource. For a network resource, choose a number in the range you have
reserved for services, servers, and similar devices. Ensure the number you choose is out
of the range used for normal devices.
n
See the iNEWS Setup and Configuration Guide for more information on selecting servers
and the Site Configuration file.
3. Add the resource to the configuration file on each server in your system.
a. Add the device number of the network resource to the reslist line in the server’s host
definition.
b. To keep the network resource available if you bring down one of the system servers,
add this line to any appropriate alternate host definitions.
Select all servers.
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The following steps use ed to modify system files. If you are unfamiliar with this line editor,
see “The Line Editor, ed” on page 291.
c. Use
ed (line editor) to open the configuration file. The display will look similar to:
NRCS-A $ ed /site/config
1356