Open System Services Management and Operations Guide (G06.25+, H06.03+)

Managing Servers
Open System Services Management and Operations Guide—527191-002
4-5
The Network Services Servers and Tools
inetd process allows one process to invoke several others, reducing load on the
system.
inetd simplifies the interface of a server program that it starts, because it duplicates
its socket descriptors for an incoming request as file descriptors 0, 1, and 2 before the
server application is processed by an exec function call. This action allows the server
application to use the stdin, stdout, and stderr files in function calls to perform
the requested service.
If the inetd server fails, you can restart it. Server failure can be detected from the
Event Management Service (EMS) messages issued to your system logs, as described
in OSS Subsystem Messages on page A-61.
For more information about the inetd server, see the inetd(8) reference page
either online or in the Open System Services Shell and Utilities Reference Manual.
rshd
The rshd process is the server process for the rsh utility. It is started by the inetd
process, which must be running when you use the rsh utility.
For information about the behavior of the rshd process, see the rshd(8) reference
page either online or in the Open System Services Shell and Utilities Reference
Manual.
rexecd
The OSS remote execution server, rexecd, is used for remote NonStop SQL/MX
compiler (mxcmp) invocation from the native C/C++ and NMCOBOL cross-compilers,
running by themselves, or under the Enterprise Toolkit—NonStop Edition. rexecd is
started by the inetd process, which must be running for remote SQL/MX
compilations.
For information about the behavior of the rexecd process, see the rexecd(8)
reference page either online or in the Open System Services Shell and Utilities
Reference Manual.
portmap and RPCINFO
The portmap process is a Guardian server process or process pair that converts host
port numbers to Remote Procedure Call (RPC) program numbers. portmap is started
from a TACL prompt, runs as a process named $ZPMn, and is required by products
such as the OSS Network File System (NFS) that use the RPC interface.
The Guardian portmap process corresponds to /etc/portmap on UNIX systems.
For more information about the portmap process, see the portmap(8) reference
page in the Open System Services Shell and Utilities Reference Manual.
The RPCINFO process is started from a TACL prompt and reports the status of certain
servers, including portmap. RPCINFO is a Guardian process that reports RPC