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       cmannotifyd - CMAN Notification Daemon


       cmannotifyd [-f] [-d]


       The cmannotifyd daemon talks to CMAN and provides a mechanism to notify
       external entities about cluster changes.

       CMAN dispatches 3 kind of notifications:

       - CMAN_REASON_TRY_SHUTDOWN when cman requests to all clients if  it  is
       allowed to shutdown.

       -  CMAN_REASON_STATECHANGE  when cman detects a node joining or leaving
       the cluster.

       - CMAN_REASON_CONFIG_UPDATE when a configuration change event has  been

       These notifications are then dispatched to the shell script cman_notify
       in the environment variable CMAN_NOTIFICATION.

       cman_notify will  then  execute  all  the  scripts  in  the  configured
       notification  directory (default: /etc/cluster/cman-notify.d) passing a
       very   minimal   set   of   envvars   including,   of    course,    the
       CMAN_NOTIFICATION= type.  The execution order is set by the filename as
       shown by "LC_ALL=C ls -las".

       cmannotifyd   logs   are   stored   in    the    default    log    file

       cman_notify    logs    are    stored    in   the   default   log   file
       (/var/log/cluster/cman_notify.log). By  default  the  output  from  the
       scripts  executed by cman_notify is redirected to /dev/null.  Users can
       either set CMAN_NOTIFICATION_DEBUG=1 in their environment or set proper
       debug  configuration  in cluster.conf to redirect scripts output to the
       cman_notify log file.


       cmannotifyd does not block on cman_notify nor check the exit status  of
       the script.

       Notifications  are  dispatched in the same order as they arrive, one by

       CMAN_REASON_TRY_SHUTDOWN is passed to  scripts  for  information  only,
       they  can  not  influence  cman’s  decsion about whether or not to shut

       in the environment. CMAN_NOTIFICATION_QUORUM will be set to 1 (when the
       node is part of a quorate cluster) or 0 (otherwise).

       A template for cman_notify scripts can be found in the doc/  directory.


       -f     Run in the foreground (do not fork / daemonize).

       -d     Enable debug output.

                                 November 2008                  cmannotifyd(8)