SGE_SHADOWD(8) | Grid Engine Administrative Commands | SGE_SHADOWD(8) |
sge_shadowd - Grid Engine shadow master daemon
sge_shadowd
sge_shadowd is a "light weight" process which can be run on 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 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 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.
The name of the default cell, i.e. default.
<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 <sge_root>/<cell>/spool/qmaster/heartbeat The heartbeat file.
See sge_intro(1) for a full statement of rights and permissions.
2007-11-08 | SGE 8.1.3pre |