Pathway/XM System Management Manual

Overview of Configuring and Managing Pathway/XM

Compaq NonStop™ Pathway/XM System Management Manual—426761-001

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PXMCFG Utility

The PXMCFG utility generates the initial configuration of a Pathway/XM environment.

PXMCFG uses the statements in the configuration source file to build the SuperCTL

file. You run the PXMCFG utility offline (in batch mode) before starting the

Pathway/XM environment.

SERVICE definitions

A SERVICE definition is a set of configuration commands that pre-define environment-

specific attributes for server classes being exported to or imported from another

Pathway/XM environment, such as a third-party application. When you export server

class configurations, the PXMCOM process generates an export-only file that contains

the server class configurations with the node attribute removed. When you import server

class configurations, the PXMCOM process reads the incoming configuration then uses

your SERVICE definition to assign node and group names, and replace any other named

references specific to your environment. The resulting definitions are used by PXMCFG

when building the SuperCTL file.

SuperCTL file

Centralized configuration and control in a Pathway/XM environment is provided by

means of a file called the SuperCTL file. The PXMCFG utility builds the initial

configuration of the Pathway/XM environment in this file in accordance with

configuration statements in a configuration source file. The PXMCOM utility uses the

information in this file to start up and manage the Pathway/XM environment.

PXMCOM also maintains current configuration and object-state information in the

SuperCTL file while the application is running.

PXMCHK Utility

The PXMCHK utility program reads a configuration input file and verifies that all the

named references (such as file names or node names) can be resolved. You run the

PXMCHK utility before migrating to a new configuration, after you move the new

configuration input file to the Pathway/XM environment in which it is to run.

PXMCOM Process

The PXMCOM process provides the run-time management interface for a Pathway/XM

environment. It provides commands to monitor the environment, change the state of

objects, reassign system resources, and reconfigure distributed server classes online.

You can run PXMCOM either interactively or by means of a command file.

Internally, PXMCOM manages the global Pathway/XM environment and maintains the

current state information in the SuperCTL file.

Process Broker (PB) Processes

The process broker (PB) processes manage system and CPU resource assignments for

requesters and servers. They also manage distributed-server process reservations on

behalf of the LCS processes.