Provided by: gridengine-master_6.2u5-4_amd64 bug


       sge_shadowd - Sun Grid Engine shadow master daemon




       sge_shadowd  is a "light weight" process which can be run on so-called shadow master hosts
       in a Sun Grid Engine cluster to detect failure of  the  current  Sun  Grid  Engine  master
       daemon,  sge_qmaster(8),  and  to  start-up  a new sge_qmaster(8) on the host on which the
       sge_shadowd runs. If multiple shadow daemons are active in a cluster, they run a  protocol
       which ensures that only one of them will start-up a new master daemon.

       The  hosts suitable for being used as shadow master hosts must have shared root read/write
       access to the directory $SGE_ROOT/$SGE_CELL/common as well as to the master  daemon  spool
       directory  (by default $SGE_ROOT/$SGE_CELL/spool/qmaster).  The names of the shadow master
       hosts need to be contained in the file $SGE_ROOT/$xQS_NAME_Sxx_CELL/common/shadow_masters.


       sge_shadowd may only be started by root.


       SGE_ROOT       Specifies the location of the Sun Grid Engine standard configuration files.

       SGE_CELL       If set, specifies the default Sun Grid Engine cell. To address a  Sun  Grid
                      Engine cell sge_shadowd uses (in the order of precedence):

                             The name of the cell specified in the environment variable SGE_CELL,
                             if it is set.

                             The name of the default cell, i.e. default.

                      If set, specifies that debug information should be written  to  stderr.  In
                      addition  the  level  of  detail in which debug information is generated is

                      If set, specifies the tcp port  on  which  sge_qmaster(8)  is  expected  to
                      listen  for communication requests.  Most installations will use a services
                      map entry for the service "sge_qmaster" instead to define that port.

       SGE_DELAY_TIME This variable controls the  interval  in  which  sge_shadowd  pauses  if  a
                      takeover  bid  fails.  This  value  is  used  only  when there are multiple
                      sge_shadowd instances and they  are  contending  to  be  the  master.   The
                      default is 600 seconds.

                      This  variable  controls  the  interval in which the sge_shadowd checks the
                      heartbeat file (60 seconds by default).

                      This variable controls the interval when a sge_shadowd  instance  tries  to
                      take over when the heartbeat file has not changed.


                       Default configuration directory
                       Shadow master hostname file.
                       Default master daemon spool directory
                       The heartbeat file.


       sge_intro(1), sge_conf(5), sge_qmaster(8), Sun Grid Engine Installation and Administration


       See sge_intro(1) for a full statement of rights and permissions.