Notes on Cell Administration

Establishing Intercell Communication

There may be more than one TXT record for a cell; each clearinghouse in the cell has its own TXT record. Each TXT record appears on a single line (without the slashes that appear in this example).

(You can also derive this information, though in a different format, using the dcecp directory show command.)

3.For each TXT record in the output of show cell, create a line in a text file similar to:

cell.xyz.com. IN TXT “TXT_data hostname.xyz.com” Where:

TXT_data is the TXT data from cdscp show cell (note that this data must be entered on a single line), and hostname.xyz.com is the full domain name of the CDS server system that maintains that clearinghouse. The quotation marks are literal, and the absolute name of the host must be used (in this case) without the trailing dot.

4.In the same text file, create a line for each different hostname.xyz.com that you have added to the TXT records. For example:

cell.xyz.com. IN MX 1 hostname.xyz.com.

5.Add these records to your DNS database, or give these records to your DNS administrator.

Establishing Peer-to-Peer Trust

Peer-to-peer trust means a principal from one cell is trusted by another cell; the second cell trusts that the first cell has authenticated the identity of the principal. Use the following procedure to enable peer-to-peer trust between cells:

1.Check that both cells are running gdad, and that the DNS resource records for both cells are in the DNS database.

2.dce_login as cell administrator to one of the two cells.

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Planning and Configuring HP DCE 1.7

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HP UX DCE Software manual Establishing Peer-to-Peer Trust
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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.
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