Configuring HP DCE Cells

Configuring Cells Using dce_config

(Also, CHECK_TIME should be set to n and exported when running dce_config from a here-document.) See the ksh (1) man page for more information about here-documents.

VERBOSE messages containing “User query:” or “User entry:” contain a complete record of user entries in executing dce_config. The top of the log files contains a set of VERBOSE messages showing the settings of environment variables. These can all be used to reproduce a user’s execution of dce_config.

Only ERROR: or WARNING: messages indicate actual occurrence of a problem.

Component Scripts and Environment Variables for dce_config

This section contains information useful for those who want to run dce_config from custom scripts. This section includes a description of the special-purpose component scripts that are called by dce_config, as well as a list and description of the environment variables that allow you to supply configuration input to dce_config.

dce_config Component Scripts

In a custom configuration script, you may want to directly call the following dce_config component scripts. Unless otherwise noted, these scripts reside in /opt/dce/bin or /etc/opt/dce:

•dce_shutdown: Kills running HP DCE daemons. Cannot be run remotely; must be run on affected DCE client or server node. Should be run before reconfiguring DCE.

•dce.rm: Removes data and configuration files created by DCE daemons after initial configuration. Should be run before reconfiguring DCE. Cannot be run remotely; must be run on affected DCE client or server node.

•dce.unconfig hostname: Removes DCE client on hostname from the Security and Directory service databases. Should be run before reconfiguring DCE on a client system.

•dce_com_env: Sets common DCE environment variables.

•dce_com_utils: Common internal routines used by DCE utilities.

5-24

Planning and Configuring HP DCE 1.7

Page 107 Page 109
Page 108
Image 108
HP UX DCE Software manual Component Scripts and Environment Variables for dceconfig, Dceconfig Component Scripts
Page 107 Page 109

UX DCE Software specifications

HP UX DCE Software, or Hewlett-Packard UNIX Distributed Computing Environment, represents a significant tool in the realm of distributed system architecture. Designed primarily for enterprise environments, HP UX DCE enhances the reliability, scalability, and manageability of applications over diverse networked systems.

One of the main features of HP UX DCE is its ability to integrate various computing platforms, enabling seamless communication and resource sharing across distributed nodes. This facilitates the creation of complex applications that can operate on a multitude of systems, thus enhancing operational flexibility. DCE employs standardized interfaces, which means applications written for one platform can run on any other platform that supports DCE, promoting cross-platform compatibility.

In terms of technologies, HP UX DCE utilizes Remote Procedure Calls (RPC) as a core feature. This mechanism allows different applications to communicate and invoke procedures on remote systems as if they were local calls. Additionally, DCE includes a robust security model that incorporates Kerberos for authentication, ensuring that communication between nodes remains secure and protected against unauthorized access.

Another significant characteristic of HP UX DCE is its distributed file system, which allows for transparent file access across different machines. The DCE File System (DFS) provides a unified namespace and manages data replication and consistency across distributed storage resources. This reduces the complexity of data management and enhances data availability.

HP UX DCE also supports a variety of programming languages, making it accessible for developers accustomed to different coding environments. This versatility encourages widespread adoption and innovation, as developers can leverage existing skills to create distributed applications.

Furthermore, HP UX DCE is built for high availability, ensuring that critical applications remain responsive even in the face of hardware or network failures. Its inherent component redundancy and fault-tolerant architecture are designed to minimize downtime, which is essential for mission-critical applications in enterprise scenarios.

In conclusion, HP UX DCE Software provides a comprehensive framework for developing, deploying, and managing distributed applications. Its core features such as RPC support, a secure authentication mechanism, a robust file system, and cross-platform compatibility make it a vital resource for organizations aiming to leverage distributed computing effectively. As enterprises evolve, HP UX DCE stands out as an influential solution in the dynamic landscape of distributed environments.
Top Page Image Contents