TS/MP 2.5 Management Programming Manual

• Handle events (such as errors or changes in state) through a single mechanism, regardless of
which subsystem originated the event.
• Build an integrated and uniform approach to problem determination, including uniform reporting
of events that call for operator action (for instance, a request that an operator mount a tape);
ways to tailor event reporting to your own needs; and means for responding to events
programmatically, without operator intervention. For example, your program might receive
notice of an error and respond by issuing a command that corrects the error.
DSM consists of numerous components designed to handle various functions. You can use the
following parts of DSM with a Pathway subsystem:
• Subsystem Programmatic Interface (SPI)— A set of procedures that provides a token-oriented
interface between a management application and the central control process within a subsystem
(for example, a PATHMON process).
• Event Management Service (EMS)— A set of tools that collects and reports events. In the
Pathway subsystem, PATHMON reports errors and status changes to EMS; the management
application retrieves the event messages from EMS.
EMS also includes a filter language, which allows users to describe the subset of messages
an application wants to see. For more information about EMS, see the EMS Manual.
• ViewPoint console application— A management application that allows interactive
communication with other HP NonStop products. Through a GUI, you can summon PATHCOM,
as well as other interfaces such as TMFCOM.
Using the ViewPoint application with the Pathway subsystem Management Programming
interface, you can control an integrated NonStop system, including many subsystems, from
one terminal. For more information about the ViewPoint application, see the ViewPoint Manual.
• Distributed Name Service (DNS)— A subsystem that manages a distributed database of names
for network objects, facts about object relationships, and instructions for replicating name
definitions on remote nodes.
Figure 3 (page 20) illustrates a Pathway subsystem that uses the SPI and EMS procedures for
subsystem control and event management.
Figure 3 TS/MP and DSM
Management Interfaces
You can configure and control TS/MP in two ways – either interactively by entering PATHCOM
commands at a terminal or programmatically by writing a management application program. Both
methods allow you to send commands and instructions to PATHMON, a process that monitors your
20 Introduction