sge_shadowd(8) [debian man page]
SGE_SHADOWD(8) Sun Grid Engine Administrative Commands SGE_SHADOWD(8) NAME
sge_shadowd - Sun Grid Engine shadow master daemon SYNOPSIS
sge_shadowd DESCRIPTION
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 dae- mon. The hosts suitable for being used as shadow master hosts must have shared root read/write access to the directory $SGE_ROOT/$SGE_CELL/com- mon 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. RESTRICTIONS
sge_shadowd may only be started by root. ENVIRONMENT VARIABLES
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. SGE_DEBUG_LEVEL If set, specifies that debug information should be written to stderr. In addition the level of detail in which debug infor- mation is generated is defined. SGE_QMASTER_PORT 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. SGE_CHECK_INTERVAL This variable controls the interval in which the sge_shadowd checks the heartbeat file (60 seconds by default). SGE_GET_ACTIVE_INTERVAL This variable controls the interval when a sge_shadowd instance tries to take over when the heartbeat file has not changed. 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 <sge_root>/<cell>/spool/qmaster/heartbeat The heartbeat file. SEE ALSO
sge_intro(1), sge_conf(5), sge_qmaster(8), Sun Grid Engine Installation and Administration Guide. COPYRIGHT
See sge_intro(1) for a full statement of rights and permissions. SGE 6.2u5 $Date$ SGE_SHADOWD(8)
Check Out this Related Man Page
QRDEL(1) Sun Grid Engine User Commands QRDEL(1) NAME
qrdel - delete Sun Grid Engine Advance Reservations (AR) SYNTAX
qrdel [-f] [-help [-u wc_user_list] wc_ar_list DESCRIPTION
Qrdel provides a means for a user/operator/manager to delete one or more Advance Reservations (AR). A manager/operator can delete ARs belonging to any user, while a regular user can only delete his or her own ARs. If a manager wants to delete another user's AR, the man- ager can specify the AR id. By default, "qrdel wc_ar_name" will delete only the ARs belonging to that user. A manager is able to delete another user's AR via "-u wc_user_list". Jobs referring to an AR tagged for deletion will also be removed. Only if all jobs referring to an AR are removed from the Sun Grid Engine database will the AR also be removed. Qrdel deletes ARs in the order in which the AR identifiers are presented. Find additional information concerning wc_user_list and wc_ar_list in sge_types(1). OPTIONS
-f Force action for AR. The AR and the jobs using the AR are deleted from the Sun Grid Engine queuing system even if the sge_execd(8) controlling the AR jobs does not respond to the delete request sent by the sge_qmaster(8). Users which have neither Sun Grid Engine manager nor operator status can only use the -f option for their own ARs. -help Prints a list of all options. -u wc_user_list Deletes only those ARs which were submitted by users specified in the list of usernames. For managers, it is possible to use qrdel -u "*" to delete all ARs for all users. If a manager wants to delete a specific AR for a user, he has to specify the user and the AR id. If no AR is specified, all ARs belonging to that user are deleted. wc_ar_list A list of AR id's that should be deleted ENVIRONMENTAL VARIABLES
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 qrdel uses (in the order of prece- dence): 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 infor- mation is generated is defined. SGE_QMASTER_PORT If set, specifies the tcp port on which the sge_qmaster(8) is expected to listen for communication requests. Most installa- tions will use a service map entry for the service "sge_qmaster" instead of defining the port. FILES
<sge_root>/<cell>/common/act_qmaster Sun Grid Engine master host file SEE ALSO
sge_intro(1), qrstat(1), qrsub(1), qsub(1), sge_qmaster(8), sge_execd(8). COPYRIGHT
See sge_intro(1) for a full statement of rights and permissions. SGE 6.2u5 $Date$ QRDEL(1)