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evmd(8)


NAME

  evmd - 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 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(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:

  0   Successful completion.

  non 0
      An error occurred.


FILES

  /usr/sbin/evmd
      Executable file

  /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(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)

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