About HP DCE/9000 Version 1.7

Notes, Cautions and Warnings Regarding This Release

Administrators should periodically monitor the size of the Security audit logs on the Security server machines. Each audit trail log consists of two files — the actual trail log file and the associated index file. These logs are in:

/var/opt/dce/security/sec_audit_trail /var/opt/dce/security/sec_audit_trail.md_index

Other older audit logs may also be present. These can be found under the same directory, but have a date and time stamp format inserted into the name. As an example:

sec_audit_trail.1995-08-31-15-19-52

sec_audit_trail.1995-08-31-15-19-52.md_index

For detailed information on the DCE Audit Service, see the OSF DCE Administration Guide and Reference. For Audit Service configuration information see Chapter 5 of this manual.

Setting LANG and NLSPATH Environment Variables

English-language users of HP DCE/9000 should set the NLSPATH environment variable to include /usr/lib/nls/C/%N or should set NLSPATH to include /usr/lib/nls/%L/%N and LANG to C. Users who want to use another language should set the NLSPATH environment variable to include / usr/lib/nls/%L/%N and LANG to their preferred language. See the environ (5) and locale (1) man pages for details on LANG and NLSPATH syntax.

dcecp in Local Mode

When you run dcecp in “local” mode (that is, when you start dcecp with the local option) on a host with dced in partial-service mode, there is a possibility that a dcecp ‘acl modify -add’command will not work. The interactive dcecp session may hang or a Bus Error may be returned.

One workaround for this condition is to run dcecp in normal mode on a host that is running dced, also in normal mode, and then execute dcecp again. Alternatively, you can quit out of local mode between acl modify -addcommands, as follows:

dcecp -local

dcecp> acl modify -local foo1 -add ...

dcecp> quit dcecp -local

dcecp> acl modify -local foo2 -add ...

dcecp> quit

Planning and Configuring HP DCE 1.7

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HP UX DCE Software manual Setting Lang and Nlspath Environment Variables, Dcecp in Local Mode

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.