The hepdb system is a dedicated IBM RS6000 that only runs HEPDB servers and associated jobs. The database files are maintained in the /hepdb file system. This is nfs exported and should be mounted on other Unix systems, such as CSF, as follows:
Mounting the /hepdb file system
mount hepdb:/hepdb /hepdb
New servers can be setup using the following script, which creates the necessary directory structure and configuration files.
Creating the files and directories for a new server
# # Setup the directory and file structure for a new # server # iam=`whoami` # # Are we root? # if [ "$iam" != "root" ] then echo $0: This script must be run from root exit fi # # Did we get any arguments? # if [ $# != 1 ] then echo $0: usage $0 group exit fi # # Does this directory exist? # if [ -d /hepdb/$1 ] then echo $0: Directory /hepdb/$1 already exists exit fi # # No, so make it # mkdir /hepdb/$1 # # and the subdirectories... # mkdir /hepdb/$1/bad mkdir /hepdb/$1/log mkdir /hepdb/$1/queue chmod o+w /hepdb/$1/queue mkdir /hepdb/$1/todo mkdir /hepdb/$1/save ls -F /hepdb/$1 # # now create the names file # echo :nick.config > /hepdb/$1/hepdb.names echo :list.aa >> /hepdb/$1/hepdb.names echo :log./hepdb/cdtest/log >> /hepdb/$1/hepdb.names echo :queue./hepdb/cdtest/queue >> /hepdb/$1/hepdb.names echo :todo./hepdb/cdtest/todo >> /hepdb/$1/hepdb.names echo :save./hepdb/cdtest/save >> /hepdb/$1/hepdb.names echo :bad./hepdb/cdtest/bad >> /hepdb/$1/hepdb.names echo :loglevel.3 >> /hepdb/$1/hepdb.names echo :wakeup.60 >> /hepdb/$1/hepdb.names echo :nick.aa >> /hepdb/$1/hepdb.names echo :file./hepdb/cdtest/aa.dbs >> /hepdb/$1/hepdb.names echo :desc.Description of the database >> /hepdb/$1/hepdb.names echo :servers. >> /hepdb/$1/hepdb.names cat /hepdb/$1/hepdb.names # # Link the server script # ln -s /cern/new/bin/cdserv.sh /hepdb/$1/cdserv # # and the server module # ln -s /cern/new/bin/cdserv /hepdb/$1/cdsrv
The servers are started at boot time by adding the file /etc/inittab as follows:
Extract from /etc/inittab
rcnfs:2:wait:/etc/rc.nfs > /dev/console 2>&1 # Start NFS Daemons hepdb:2:wait:/etc/rc.hepdb > /dev/console 2>&1 # Start HEPDB cons:0123456789:respawn:/etc/getty /dev/console
This invokes the following script:
rc.hepdb
#!/bin/sh
#
# Start HEPDB servers
#
#
if [ -x /cern/pro/bin/cdstart ]
then
echo Start HEPDB servers ...
su - hepdb /cern/pro/bin/cdstart 2>&1
fi
One may execute cdstart at any time, as it will only restart servers that are not already running.
cdstart script
#!/bin/ksh
start=" "
stop=" "
run=" "
nolog=" "
noscr=" "
b="."
#
# Ensure that variables are defined...
#
for i in /hepdb/cd*
do
echo
typeset -u cdgrp
cdpath=$i
cdgrp=`basename $i`
echo Setting $cdgrp to $cdpath ...
eval $cdgrp=$cdpath;export $cdgrp
#
# and start the servers
#
if [ -x $i/cdserv ]
then
#
# does a log file exist?
#
if [ -f /hepdb/$cdgrp.log ]
then
echo '>>> log file exists - looking for existing process'
log=$log$b$cdgrp
pid=`cat /hepdb/$cdgrp.log | awk 'printf "%s
n",$13'`
if (test $pid)
then
echo Looking for server process for $cdgrp
if(ps -ae | grep -s $pid )
then
echo CDSRV running PID = $pid
run=$run$b$cdgrp
else
echo No existing server found for $cdgrp - starting server
if [ -f $i/todo/signal.stop ]
then echo but signal.stop file found!
else echo Starting server for $cdgrp
nohup $i/cdserv $cdgrp > $i/cdserv.log &
start=$start$b$cdgrp
fi
fi
else
echo No existing server found for $cdgrp - starting server
if [ -f $i/todo/signal.stop ]
then echo but signal.stop file found!
stop=$stop$b$cdgrp
else echo Starting server for $cdgrp
nohup $i/cdserv $cdgrp > $i/cdserv.log &
start=$start$b$cdgrp
fi
fi
else
echo No server log found in $i
if [ -f $i/todo/signal.stop ]
then echo but signal.stop file found!
stop=$stop$b$cdgrp
else echo Starting server for $cdgrp
nohup $i/cdserv $cdgrp > $i/cdserv.log &
start=$start$b$cdgrp
fi
fi
else
echo No cdserv script found in $i - cannot start server
scr=$scr$b$cdgrp
fi
done
echo
echo Log files found for $log | tr '.' ' '
echo Started servers for $start | tr '.' ' '
echo Servers already running for $run | tr '.' ' '
echo Servers stopped $stop | tr '.' ' '
echo No scripts found for $scr | tr '.' ' '
The servers can be checked by running the following script:
Looking for running servers
echo 'HEPDB server Elapsed CPU time %CPU' echo '===============================================================================' ps -aef -F "args,etime,time,pcpu" | grep "/cdsrv" | sort +2 -r
Output from the above script
HEPDB server Elapsed CPU time %CPU =============================================================================== /hepdb/cdnomad/cdsrv 7-02:19:29 00:04:44 0.0 /hepdb/cdchorus/cdsrv 7-02:19:29 00:04:43 0.0 /hepdb/cdcplear/cdsrv 7-02:19:29 00:04:41 0.0