evmd(8)evmd(8)NAMEevmd - Event Manager daemon
SYNOPSIS
/usr/sbin/evmd
OPTIONS
None
OPERANDS
None
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 crit‐
ical 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 man‐
ager, evmchmgr.
On startup, the daemon reads its configuration file, /etc/evmdae‐
mon.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 com‐
mand must be used or a SIGHUP signal must be sent to instruct the dae‐
mon 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(8) for more information.
RESTRICTIONS
The daemon rejects any attempt by a posting client to post an event
that is not registered, that contains invalid item values, or that the
poster is not authorized to post.
EXIT STATUS
The following exit values are returned: Successful completion. An
error occurred.
FILES
Executable file Default directory for event template files. Default
location for event filter files. Filter files must have the suffix
Error log file for evmd. UNIX domain socket established for connection
between the EVM daemon and the local clients. Daemon process id saved
by evmd. Lock file established to prevent multiple invocations of the
daemon. Default location of the EVM daemon configuration file.
Default location of the EVM daemon authorization file.
SEE ALSO
Commands: esmd(8), evmchmgr(8), evmd(8), evmlogger(8), evmreload(8),
evmstart(8), evmstop(8)
Files: evm.auth(4), evmdaemon.conf(4), evmtemplate(4)
Event Management: EVM(5)
Event Connection: EvmConnection(5)
EVM Events: EvmEvent(5)
Event Filter: EvmFilter(5)evmd(8)