NAME
sge_shadowd - Grid Engine shadow master daemon
SYNOPSIS
sge_shadowd
DESCRIPTION
sge_shadowd is a "light weight" process which can be run on
the so called shadow master hosts in a Grid Engine cluster
to detect failure of the current 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 dae-
mons 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>/<cell>/common as well as to the master daemon
spool directory (Default <sge_root>/<cell>/spool/qmaster).
The shadow master hosts need to be contained in the file
<sge_root>/<cell>/common/shadow_masters.
RESTRICTIONS
sge_shadowd may only be started from root.
ENVIRONMENT VARIABLES
SGE_ROOT Specifies the location of the Grid Engine
standard configuration files.
SGE_CELL If set, specifies the default Grid Engine
cell. To address a Grid Engine cell
sge_shadowd uses (in the order of pre-
cedence):
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.
SGE_DEBUG_LEVEL
If set, specifies that debug information
should be written to stderr. In addition the
level of detail in which debug information is
generated is defined.
COMMD_PORT If set, specifies the tcp port on which
sge_commd(8) is expected to listen for com-
munication requests. Most installations will
use a services map entry instead to define
that port.
COMMD_HOST If set, specifies the host on which the par-
ticular sge_commd(8) to be used for Grid
Engine communication of the sge_shadowd
client resides. Per default the local host
is used.
FILES
<sge_root>/<cell>/common
Default configuration directory
<sge_root>/<cell>/common/shadow_masters
Shadow master hostname file.
<sge_root>/<cell>/spool/qmaster
Default master daemon spool directory
SEE ALSO
sge_intro(1), sge_conf(5), sge_commd(8), sge_qmaster(8),
Grid Engine Installation and Administration Guide.
COPYRIGHT
See sge_intro(1) for a full statement of rights and permis-
sions.
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