You can run the loader as a linux service so that it auto-starts when the machine boots up
Create a directory for the loader script, pid, and logs (feel free to change dir names etc)
mkdir -p /opt/appserv/grouperLoader
Create the bootstrap script: /opt/appserv/grouperLoader/grouperLoader.sh
Note, test the script as below, and make sure all the commands are in the right place, e.g. /bin/kill, /bin/ps, etc
#!/bin/bash pidLocation=/opt/grouperLoader/grouperLoader.pid gshBinDirectory=/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin loaderLog=/opt/grouperLoader/grouperLoader.log cd $gshBinDirectory theDate=`date` /usr/bin/nohup $gshBinDirectory/gsh -loader >> $loaderLog 2>&1 & pid=$! echo $pid > $pidLocation echo >> $loaderLog echo "##############################" >> $loaderLog echo "## $theDate: started Grouper loader... ($pid)" >> $loaderLog echo "##############################" >> $loaderLog echo >> $loaderLog
Create the service script: /opt/appserv/grouperLoader/grouperLoaderService.sh
#!/bin/sh
#
# Startup script for the Tomcat Server
#
# chkconfig: - 86 14
# description: Grouper loader service
# processname:
# pidfile:
# config:
# Tomcat
# description: Keeps Grouper permissions in sync with file on linux server
#################### CUSTOMIZE THIS FOR YOUR ENV #######################
# the user this script should run as
shouldRunAs=appadmin
pidLocation=/opt/grouperLoader/grouperLoader.pid
#note, this should not contain the gsh command, just the parent directory
gshBinDirectory=/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin
#only run on daemon box of cluster. note, customize this for your env
source /home/appadmin/bin/requireDaemon.sh
loaderLog=/opt/grouperLoader/grouperLoader.log
grouperLoaderBootstrapScript=/opt/appserv/grouperLoader/grouperLoader.sh
# grouperLoaderBootstrapScript is a way to su as the real user to run the loader
# it has these contents
#
# #!/bin/bash
#
# pidLocation=/opt/grouperLoader/grouperLoader.pid
# gshBinDirectory=/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin
# loaderLog=/opt/grouperLoader/grouperLoader.log
#
# cd $gshBinDirectory
# theDate=`date`
# /usr/bin/nohup $gshBinDirectory/gsh -loader >> $loaderLog 2>&1 &
# pid=$!
# echo $pid > $pidLocation
# echo >> $loaderLog
# echo "##############################" >> $loaderLog
# echo "## $theDate: started Grouper loader... ($pid)" >> $loaderLog
# echo "##############################" >> $loaderLog
# echo >> $loaderLog
########################################################################
# function to kill a pid, wait for exit...
killPid(){
pidToKill=$1
/bin/kill $pidToKill
#loop until the program is dead
waitingForExit=true
iterator=1
while [ "$waitingForExit" == "true" ]; do
# xargs will trim the string
processIdToKill=`/bin/ps -fp $pidToKill | grep gsh | grep loader | grep -v /bin/ps | cut -c10-15 | xargs`
if [ -n "$processIdToKill" ]; then
echo Waiting for exit...
else
# lets just make sure: (sometimes process isnt found with -fp...)
/bin/kill -KILL $pidToKill > /dev/null 2>&1
waitingForExit=false
fi
if [ "$iterator" -gt "10" ]; then
waitingForExit=false
fi
let "iterator += 1"
if [ "$waitingForExit" == "true" ]; then
sleep 1
fi
done
processIdToKill=`/bin/ps -fp $pidToKill | grep gsh | grep loader | grep -v /bin/ps | cut -c10-15 | xargs`
if [ -n "$processIdToKill" ]; then
/bin/kill -KILL $pidToKill
sleep 1
processIdToKill=`/bin/ps -fp $pidToKill | grep gsh | grep loader | grep -v /bin/ps | cut -c10-15 | xargs`
if [ -n "$processIdToKill" ]; then
echo "Cannot kill process: $processIdToKill"
exit 1
fi
fi
}
# get the process id of the gsh process, put into the variable theGshProcessId
# if pass "true" as arg, then exit if there are multiple running
gshProcessId(){
if [ "$1" == "true" ]; then
numberOfProcesses=`/bin/ps -ef | grep $gshBinDirectory | grep gsh | grep loader | grep -v /bin/ps | grep edu.internet2.middleware.grouper.app.gsh.GrouperShellWrapper | wc -l`
if [ "$numberOfProcesses" -gt "1" ]; then
echo "Grouper loader is running multiple times!!!"
exit 1
fi
fi
theGshProcessId=`/bin/ps -ef | grep $gshBinDirectory | grep gsh | grep loader | grep -v /bin/ps | grep edu.internet2.middleware.grouper.app.gsh.GrouperShellWrapper | head -1 | cut -c10-15 | xargs`
}
# get the parent process id of the gsh process, put into the variable theGshParentProcessId
gshParentProcessId(){
theGshParentProcessId=`/bin/ps -ef | grep /bin/sh | grep $gshBinDirectory | grep gsh | grep loader | grep -v /bin/ps | head -1 | cut -c10-15 | xargs`
}
runningUser=`/usr/bin/whoami`
# we only want appadmin or root to be able to do this
if [ "$runningUser" != "$shouldRunAs" ]; then
if [ "$runningUser" != "root" ]; then
echo "ERROR: only user $shouldRunAs or root can run administer the grouperLoader service: '$runningUser'"
echo
exit 1
fi
fi
case "$1" in
start)
gshProcessId "true"
gshParentProcessId
# if this is true, then it is running...
if [ -n "$theGshProcessId" ]; then
# lets see if the process id matches
if [ -f "$pidLocation" ]; then
pidInFile=`cat $pidLocation`
if [ -n "$theGshParentProcessId" ]; then
if [ "$theGshParentProcessId" -eq "$pidInFile" ]; then
echo "Grouper loader is running already, parent process id: $theGshParentProcessId, process id: $theGshProcessId"
exit 1
fi
fi
fi
echo "Grouper loader is already running, but pid doesnt match file. Parent process id: $theGshParentProcessId, process id: $theGshProcessId, parent process id in file: $pidInFile"
exit 1
fi
echo "Starting Grouper loader service..."
# if not appadmin, then we must be root
if [ ! "$runningUser" == "$shouldRunAs" ]; then
su $shouldRunAs -c $grouperLoaderBootstrapScript
else
# if not root then we must be appadmin
$grouperLoaderBootstrapScript
fi
echo "Grouper loader is running..."
;;
stop)
waitingForExitStop=true
iteratorStop=1
wasRunning=false
while [ "$waitingForExitStop" == "true" ]; do
gshProcessId
if [ -n "$theGshProcessId" ]; then
wasRunning=true
echo "Grouper loader is running with processId: $theGshProcessId, waiting for exit..."
theDate=`date`
if [ -f $loaderLog ]; then
echo >> $loaderLog
echo "##############################" >> $loaderLog
echo "## $theDate: stopping Grouper loader... ($theGshProcessId)" >> $loaderLog
echo "##############################" >> $loaderLog
echo >> $loaderLog
fi
killPid $theGshProcessId
else
waitingForExitStop=false
fi
if [ "$iteratorStop" -gt "10" ]; then
echo "Cannot stop Grouper loader!"
exit 1
fi
let "iteratorStop += 1"
if [ "$waitingForExitStop" == "true" ]; then
sleep 1
fi
done
waitingForExitStop=true
iteratorStop=1
while [ "$waitingForExitStop" == "true" ]; do
gshParentProcessId
if [ -n "$theGshParentProcessId" ]; then
echo "Grouper loader parent is running with processId: $theGshProcessId, waiting for exit..."
killPid $theGshParentProcessId
else
waitingForExitStop=false
fi
if [ "$iteratorStop" -gt "10" ]; then
echo "Cannot stop Grouper loader parent!"
exit 1
fi
let "iteratorStop += 1"
if [ "$waitingForExitStop" == "true" ]; then
sleep 1
fi
done
if [ -f $pidLocation ]; then
rm $pidLocation
fi
if [ "true" == "$wasRunning" ]; then
echo "Grouper loader is stopped"
else
echo "Grouper loader was not running"
fi
;;
status)
gshProcessId "true"
gshParentProcessId
# if this is true, then it is running...
if [ -n "$theGshProcessId" ]; then
# lets see if the process id matches
if [ -f "$pidLocation" ]; then
pidInFile=`cat $pidLocation`
if [ -n "$theGshParentProcessId" ]; then
if [ "$theGshParentProcessId" == "$pidInFile" ]; then
echo "Grouper loader is running, parent process id: $theGshParentProcessId, process id: $theGshProcessId"
exit 0
fi
fi
fi
echo "Grouper loader is running, but pid doesnt match file. Parent process id: $theGshParentProcessId, process id: $theGshProcessId, parent process id in file: $pidInFile"
exit 0
fi
# lets see if the process id matches
if [ -f "$pidLocation" ]; then
pidInFile=`cat $pidLocation`
if [ -n "$theGshParentProcessId" ]; then
echo "Grouper loader is not running, but there is a process id: $pidInFile in the pid file: $pidLocation"
exit 1
fi
fi
echo "Grouper loader is not running"
exit 0
;;
restart)
echo -n "Restarting Grouper loader: "
$0 stop
sleep 5
$0 start
echo "done."
;;
*)
echo "Usage: $0 {start|stop|restart|status}"
exit 1
esac
Set permissions and register the service:
[appadmin@theprince grouperLoader]$ chmod +x /opt/appserv/grouperLoader/grouperLoader.sh [appadmin@theprince grouperLoader]$ chmod +x /opt/appserv/grouperLoader/grouperLoaderService.sh [root@theprince init.d]# ln -s /opt/appserv/grouperLoader/grouperLoaderService.sh /etc/init.d/grouperLoader [root@theprince init.d]# chkconfig --add grouperLoader [root@theprince init.d]# chkconfig --levels 345 grouperLoader on
You can test this by turning on the service, turning it on again, getting the status, etc
[appadmin@mamapalma grouperLoader]$ ps -ef | grep gsh appadmin 14300 518 0 16:30 pts/0 00:00:00 grep gsh [appadmin@mamapalma grouperLoader]$ /sbin/service grouperLoader stop Grouper loader was not running [appadmin@mamapalma grouperLoader]$ /sbin/service grouperLoader status Grouper loader is not running [appadmin@mamapalma grouperLoader]$ /sbin/service grouperLoader start Starting Grouper loader service... Grouper loader is running... [appadmin@mamapalma grouperLoader]$ ps -ef | grep gsh appadmin 14420 1 0 16:30 pts/0 00:00:00 /bin/sh /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/gsh -loader appadmin 14421 14420 99 16:30 pts/0 00:00:09 java -Xms64m -Xmx750m -Dgrouper.home=/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../ -classpath /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../classes:/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../lib/*: edu.internet2.middleware.grouper.app.gsh.GrouperShellWrapper -loader appadmin 14450 518 0 16:30 pts/0 00:00:00 grep gsh [appadmin@mamapalma grouperLoader]$ cat /opt/grouperLoader/grouperLoader.pid 14420 [appadmin@mamapalma grouperLoader]$ /sbin/service grouperLoader status Grouper loader is running, parent process id: 14420, process id: 14421 [appadmin@mamapalma grouperLoader]$ /sbin/service grouperLoader start Grouper loader is running already, parent process id: 14420, process id: 14421 [appadmin@mamapalma grouperLoader]$ echo "123" > /opt/grouperLoader/grouperLoader.pid [appadmin@mamapalma grouperLoader]$ /sbin/service grouperLoader status Grouper loader is running, but pid doesnt match file. Parent process id: 14420, process id: 14421, parent process id in file: 123 [appadmin@mamapalma grouperLoader]$ /sbin/service grouperLoader start Grouper loader is already running, but pid doesnt match file. Parent process id: 14420, process id: 14421, parent process id in file: 123 [appadmin@mamapalma grouperLoader]$ ps -ef | grep gsh appadmin 14420 1 0 16:30 pts/0 00:00:00 /bin/sh /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/gsh -loader appadmin 14421 14420 9 16:30 pts/0 00:00:11 java -Xms64m -Xmx750m -Dgrouper.home=/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../ -classpath /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../classes:/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../lib/*: edu.internet2.middleware.grouper.app.gsh.GrouperShellWrapper -loader appadmin 14638 518 0 16:32 pts/0 00:00:00 grep gsh [appadmin@mamapalma grouperLoader]$ /sbin/service grouperLoader stop Grouper loader is running with processId: 14421, waiting for exit... Waiting for exit... Grouper loader is stopped [appadmin@mamapalma grouperLoader]$ ps -ef | grep gsh appadmin 14725 518 0 16:33 pts/0 00:00:00 grep gsh [appadmin@mamapalma grouperLoader]$ locate gsh /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/gsh [appadmin@mamapalma grouperLoader]$ cd /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/ [appadmin@mamapalma bin]$ ./gsh -loader & >/dev/null 2>&1 [appadmin@mamapalma bin]$ /sbin/service grouperLoader status Grouper loader is running, but pid doesnt match file. Parent process id: , process id: 14731, parent process id in file: [appadmin@mamapalma bin]$ ps -ef | grep gsh appadmin 14731 14730 35 16:34 pts/0 00:00:10 /opt/appserv/java6/bin/java -Xms64m -Xmx750m -Dgrouper.home=/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../ -classpath /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../classes:/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../lib/*: edu.internet2.middleware.grouper.app.gsh.GrouperShellWrapper -loader appadmin 14812 518 0 16:34 pts/0 00:00:00 grep gsh [appadmin@mamapalma bin]$ /sbin/service grouperLoader stop Grouper loader is running with processId: 14731, waiting for exit... Waiting for exit... Grouper loader is stopped [1]+ Done ./gsh -loader [appadmin@mamapalma bin]$ ps -ef | grep gsh appadmin 14891 518 0 16:34 pts/0 00:00:00 grep gsh [appadmin@mamapalma bin]$ /sbin/service grouperLoader start Starting Grouper loader service... Grouper loader is running... [appadmin@mamapalma bin]$ ./gsh -loader & >/dev/null 2>&1 [appadmin@mamapalma bin]$ ps -ef | grep gsh appadmin 14956 1 0 16:35 pts/0 00:00:00 /bin/sh /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/gsh -loader appadmin 14957 14956 68 16:35 pts/0 00:00:10 java -Xms64m -Xmx750m -Dgrouper.home=/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../ -classpath /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../classes:/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../lib/*: edu.internet2.middleware.grouper.app.gsh.GrouperShellWrapper -loader appadmin 14987 14986 96 16:35 pts/0 00:00:10 /opt/appserv/java6/bin/java -Xms64m -Xmx750m -Dgrouper.home=/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../ -classpath /opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../classes:/opt/appserv/tomcat_3b/webapps/grouperWs/WEB-INF/bin/../lib/*: edu.internet2.middleware.grouper.app.gsh.GrouperShellWrapper -loader appadmin 15040 518 0 16:35 pts/0 00:00:00 grep gsh [appadmin@mamapalma bin]$ /sbin/service grouperLoader status Grouper loader is running multiple times!!! [appadmin@mamapalma bin]$ /sbin/service grouperLoader start Grouper loader is running multiple times!!! [appadmin@mamapalma bin]$ /sbin/service grouperLoader stop Grouper loader is running with processId: 14957, waiting for exit... Waiting for exit... Grouper loader is running with processId: 14987, waiting for exit... Grouper loader is stopped [1]+ Done ./gsh -loader [appadmin@mamapalma bin]$ ps -ef | grep gsh appadmin 15191 518 0 16:36 pts/0 00:00:00 grep gsh [appadmin@mamapalma bin]$