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pbs_server(8B)			      PBS			pbs_server(8B)

       pbs_server - start a pbs	batch server

       pbs_server [-a	 active]    [-d	config_path] [-p port]	 [-A acctfile]
       [-L logfile]   [-M mom_port]    [-R momRPP_port]	   [-S scheduler_port]
       [-H hostname] [-t type]

       The  pbs_server	command	 starts	the operation of a batch server	on the
       local host.  Typically, this command will be in a local boot file  such
       as  /etc/rc.local  .   If  the  batch  server  is already in execution,
       pbs_server will exit with an error.  To insure that the pbs_server com-
       mand  is	 not  runnable	by the general user community, the server will
       only execute if its real	and effective uid is zero.

       The server will record a	diagnostic message in a	log file for any error
       occurrence.   The log files are maintained in the server_logs directory
       below the home directory	of the server.	If  the	 log  file  cannot  be
       opened, the diagnostic message is written to the	system console.

       -a active      Specifies	if scheduling is active	or not.	 This sets the
		      server attribute scheduling.  If the option argument  is
		      "true"  ("True", "t", "T", or "1"), the server is	active
		      and the PBS job scheduler	will be	called.	 If the	 argu-
		      ment  is	"false"	("False", "f", "F", or "0), the	server
		      is idle, and the scheduler will not  be  called  and  no
		      jobs  will be run.  If this option is not	specified, the
		      server will retain the prior value of the	scheduling at-

       -d config_path Specifies	the path of the	directory which	is home	to the
		      servers configuration files, PBS_HOME.  A	host may  have
		      multiple	servers.   Each	 server	 must have a different
		      configuration directory.	The default configuration  di-
		      rectory is given by the symbol $PBS_SERVER_HOME which is
		      typically	/usr/spool/PBS.

       -p port	      Specifies	the port number	on which the server will  lis-
		      ten for batch requests.  If multiple servers are running
		      on a single host,	each must have	its  own  unique  port
		      number.  This option is for use in testing with multiple
		      batch systems on a single	host.

       -A acctfile    Specifies	an absolute path name of the file  to  use  as
		      the  accounting  file.   If  not	specified, the file is
		      named    for     the     current	   date	    in	   the
		      PBS_HOME/server_priv/accounting directory.

       -l scheduler_port
		      Specifies	 the  host  name  and port number of listening
		      schedulers. By default pbs_server	 communicates  to  the
		      scheduler	on the loop back address at port 15004.	If the
		      scheduler	and pbs_server are not on the same host	the -l
		      option  tells  pbs_server	 where	to find	the scheduler.
		      When using TORQUE	in high	availability mode the  -l  op-
		      tion  should be used to let TORQUE know where all	poten-
		      tial schedulers  are  located.  If  pbs_server  and  the
		      scheduler	 are not on the	same node the -l option	or the
		      -S option	must be	used in	order for TORQUE  to  communi-
		      cate with	the scheduler.

       -L logfile     Specifies	 an  absolute  path name of the	file to	use as
		      the log file.  If	not specified, the file	is  one	 named
		      for  the current date in the PBS_HOME/server_logs	direc-
		      tory, see	the -d option.

       -M mom_port    Specifies	the host name and/or port number on which  the
		      server should connect the	job executor, MOM.  The	option
		      argument,	mom_conn, is  one  of  the  forms:  host_name,
		      [:]port_number,  or host_name:port_number.  If host_name
		      not specified, the local host is assumed.	  If port_num-
		      ber  is not specified, the default port is assumed.  See
		      the -M option for	pbs_mom(8).

       -R mom_RPPport Specifies	the port number	on which the the server	should
		      query  the  up/down  status of Mom.    See the -R	option
		      for pbs_mom(8).

       -S scheduler_port
		      Specifies	the port number	to  which  the	server	should
		      connect  when  contacting	 the  Scheduler.   By  default
		      pbs_server looks for the scheduler on the	 loopback  ad-
		      dress  at	 port 15004. The -S option changes the default
		      to the value given in the	option	argument.  The	option
		      argument,	scheduler_conn,	is of the same syntax as under
		      the -M option.

       -H hostname    Causes the server	to start under a different hostname as
		      obtained	from  gethostname(2).  Useful for servers with
		      multiple network interfaces to support connections  from
		      clients  over  an	interface that has a hostname assigned
		      that differs from	the one	that is	returned  by  gethost-

       -t type	      Specifies	 the  impact  on jobs which were in execution,
		      running, when the	server shut down.  If the running  job
		      is  not  rerunnable or restartable from a	checkpoint im-
		      age, the job is aborted.	If the job  is	rerunnable  or
		      restartable, then	the actions described below are	taken.
		      When the type argument is:

		      hot     All jobs are requeued except non-rerunnable jobs
			      that  were  executing.  Any rerunnable job which
			      was executing when the server went down will  be
			      run immediately.	This returns the server	to the
			      same state as when it went  down.	  After	 those
			      jobs are restarted, then normal scheduling takes
			      place for	all remaining queued jobs.

			      If a job cannot be restarted immediately because
			      of  a  missing  resource,	 such  as a node being
			      down,  the server	will attempt to	restart	it pe-
			      riodically  for upto 5 minutes.	After that pe-
			      riod, the	server will revert to a	normal	state,
			      as  if  warm started, and	will no	longer attempt
			      to restart any remaining jobs which were running
			      prior to the shutdown.

		      warm    All  rerunnable jobs which were running when the
			      server went down are requeued.  All  other  jobs
			      are  maintained.	 New  selections  are made for
			      which jobs are placed into execution.   Warm  is
			      the default if -t	is not specified.

		      cold    All  jobs	are deleted.  Positive confirmation is
			      required before this direction is	accepted.

		      create  The server will discard any existing  configura-
			      tion files, queues and jobs, and initialize con-
			      figuration files to  the	default	 values.   The
			      server is	idled.

		      default  directory  for  configuration  files, typically

		      directory	for log	files recorded by the server.

Signal Handling
       On receipt of the following signals, the	server	performs  the  defined

       SIGHUP The  current  server  log	 and accounting	log are	closed and re-
	      opened.  This allows for the prior log to	be renamed and	a  new
	      log started from the time	of the signal.

       SIGINT Causes an	orderly	shutdown of pbs_server.

	      Causes  server  to increase and decrease logging levels, respec-

	      Causes an	orderly	shutdown of pbs_server.

	      On systems (Unicos) where	SIGSHUTDN is defined, it  also	causes
	      an orderly shutdown of the server.

	      This signal is ignored.

       All other signals have their default behavior installed.

       If  the server command fails to begin batch operation, the server exits
       with a value greater than zero.

       qsub   (1B),    pbs_connect(3B),	   pbs_mom(8B),	   pbs_sched_basl(8B),
       pbs_sched_tcl(8B),  pbsnodes(8B),  qdisable(8B),	qenable(8B), qmgr(1B),
       qrun(8B), qstart(8B), qstop(8B),	qterm(8B), and the PBS External	Refer-
       ence Specification.

Local								pbs_server(8B)


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