evmd.1m (2010 09)

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evmd(1M) evmd(1M)
NAME
evmd - Event Manager daemon
SYNOPSIS
/usr/sbin/evmd
DESCRIPTION
The Event Manager (EVM) daemon, evmd, receives events from posting clients and distributes them to
subscribing clients that have indicated that they are interested in receiving the events. The daemon is a
critical system facility that is started automatically when the system transitions to run level 2, and which
should not be terminated. The daemon in turn starts the event logger,
evmlogger, and the channel
manager,
evmchmgr.
On startup, the daemon reads its configuration file,
/etc/evmdaemon.conf
, the authorization file,
/etc/evm.auth
, and the event template files stored under the /usr/share/evm/templates
directory. If these files are modified while the daemon is running, the
evmreload -d command must
be used or a
SIGHUP signal must be sent to instruct the daemon to reconfigure itself.
The system administrator can control access to events by modifying the EVM authorization file,
/etc/evm.auth
.
As a daemon,
evmd does not have a standard output. Any error messages are written to the file
/var/evm/adm/logfiles/evmdaemon.log
.
The EVM daemon is monitored by the Essential Services Monitor daemon,
esmd, which automatically
restarts evmd if it terminates unexpectedly. See esmd (1M) for more information.
RETURN VALUES
The following exit values are returned:
0 Successful completion.
not 0 An error occurred.
WARNINGS
The daemon rejects any attempt by a posting client to post an event that has one or more of the following
problems:
• The event is not registered.
• The event contains invalid item values.
• The posting client is not authorized to post such an event.
FILES
/usr/share/evm/templates
Default directory for event template files
/usr/share/evm/filters/*.evf
Default location for event filter files. Filter files must have
the suffix
.evf.
/var/evm/adm/logfiles/evmdaemon.log
Error log file for evmd
/var/evm/sockets/evmd UNIX domain socket established for connection between the
EVM daemon and the local clients
/var/run/evmd.pid Daemon process id saved by evmd
/var/evm/sockets/evmd.lck Lock file established to prevent multiple invocations of the
daemon
/etc/evmdaemon.conf Default location of the EVM daemon configuration file
/etc/evm.auth Default location of the EVM daemon authorization file
SEE ALSO
Commands
esmd(1M), evmchmgr(1M), evmlogger(1M), evmreload(1M), evmstart(1M), evmstop(1M).
Files
evm.auth(4), evmdaemon.conf(4), evmtemplate(4).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1