Configuring HP DCE Cells

Configuring Cells Using dce_config

Configuring GDA Servers

The DCE Global Directory Agent (GDA) facilitates communication between DCE cells. This section describes how to start the GDA server. Before you start a GDA server, see “Establishing Intercell Communication” in Chapter 7 for information about establishing intercell communication with GDA.

1.Start dce_config on the GDA server system.

2.From the DCE Configuration Menu, choose Additional Server Configuration:

selection: 2 (Additional Server Configuration)

3. Choose GDA Server:

selection: 7 (GDA Server)

The system configures the GDA server and starts the GDA server daemon, gdad.

Creating a Security Server Replica

A feature of HP DCE/9000 is Security Server Replication, which provides improved cell performance and reliability. These steps will allow you to create a security replica via dce_config.

1. From the DCE Configuration Menu:

DCE Configuration Menu

selection: 2 (Additional Server Configuration)

2.From the Additional Server Configuration Menu, choose Replica Security Server:

Additional Server Configuration (on hostname) selection: 8 (Replica Security Server) S******:Configuring Security Replication S:****** starting slave security server (secd)…

The default name for the replica is subsys/dce/sec/$HOSTNAME. If you want to change the name of the security replica that is created by dce_config, change the value of SEC_REPLICA, either in /etc/opt/dce/ dce_com_env, or in the shell environment from which dce_config is run. Note that you must do this before running dce_config.

Planning and Configuring HP DCE 1.7

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HP UX DCE Software manual Configuring GDA Servers, Creating a Security Server Replica

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.