basefuncs.sh:
#!/bin/bash
# this shell contains several base funcs that could be used by other shell
# usage: add the following two line into ur shell(same folder with basefuncs.sh)
#
# BASE_SHELL=$(readlink -f $0) && BASE_SHELL=${BASE_SHELL%/wsmp_app/bin*} && BASE_SHELL=$BASE_SHELL/wsmp_app/bin/basefuncs.sh && $BASE_SHELL
# source $BASE_SHELL
#
#then ,u can just invoke checkUser and other funcs as a command in ur own shell
#
echo
USER=`whoami`
jettyhome="/home/$USER/jetty"
function checkUser()
{
if [ "$USER" = "root" ] ; then
echo
echo error ! current user is root !
exit
fi
}
function restartweb()
{
local JETTY
local JETTY_COUNT
case $1 in
"m" | "ma" | "mas" | "mast" | "maste" | "master")
#check configuration
kill `ps -ef | grep "DMainProcess=true" | grep -v grep | awk '{print $2}'` >/dev/null 2>&1
JETTY=`env | grep "^jetty[0-9]*=" | grep main`
JETTY_COUNT=`env | grep "^jetty[0-9]*=" | grep main | wc -l`
if [ $JETTY_COUNT -eq 0 ] ; then
echo main jetty process is not defined !
return
elif [ $JETTY_COUNT -gt 1 ] ; then
echo muilt main jetty process is defined !
env | grep "^jetty[0-9]*=" | grep -v grep | grep main
return
fi
echo restart web master $JETTY
;;
"s" | "sl" | "sla" | "slav" | "slave")
#check configuration
kill `ps -ef | grep "processName=$processName" | grep -v grep | grep -v "DMainProcess=true" | awk '{print $2}'` >/dev/null 2>&1
JETTY=`env | grep "^jetty[0-9]*=" | grep -v main`
JETTY_COUNT=`env | grep "^jetty[0-9]*=" | grep -v main | wc -l`
if [ $JETTY_COUNT -eq 0 ] ; then
echo slave jetty process is not defined !
return
fi
#reboot every jetty
for process in $JETTY
do
echo restart web slave $process
restartJetty $process
done
#check is every process start up
for process in $JETTY
do
checkWebProcess $process
done
return
;;
[0-9]*)
#check configuration
JETTY=`env | grep "^jetty[0-9]*=" | grep -v grep | grep port:$1`
JETTY_COUNT=`env | grep "^jetty[0-9]*=" | grep port:$1 | wc -l`
if [ $JETTY_COUNT -eq 0 ] ; then
echo jetty process with port $1 is not defined !
return
fi
echo restart web $JETTY ;;
jetty[0-9]*)
#check configuration
JETTY=`env | grep "^jetty[0-9]*=" | grep -v grep | grep $1`
JETTY_COUNT=`env | grep "^jetty[0-9]*=" | grep $1 | wc -l`
if [ $JETTY_COUNT -eq 0 ] ; then
echo jetty process name $1 is not defined !
return
fi
echo restart web $JETTY ;;
"a"|"al"|"all")
kill `ps -ef | grep "processName=jetty[0-9]*" | grep -v grep | awk '{print $2}'` >/dev/null 2>&1
echo restarting all
restartweb "master"
restartweb "slave"
return ;;
*)
echo "usage : restart_web.sh [m,ma,mas,maste,master|s,sl,sla,slav,slave|jettyNumber|port|a,al,all]"
return ;;
esac
restartJetty $JETTY
checkWebProcess $JETTY
}
#reboot a jetty process,arguments format： jetty0="main,port:8080,debug:9090,jmx:10010,log4j"
function restartJetty(){
local arg=$1
local processName=${arg%=*}
local processConf=${arg#*=}
local isMainProcess="false"
local command="java "
#run in child process
#command="$command --exec "
local OLD_IFS="$IFS" && IFS="," && local args=($processConf) && IFS="$OLD_IFS"
for arg in ${args[@]}
do
local key=${arg%:*}
local value=${arg#*:}
case $key in
"port")
local port=$value
command="$command -Djetty.port=$value ";;
"main")
command="$command -DMainProcess=true"
isMainProcess="true";;
"debug")
command="$command -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=$value -Xnoagent";;
"jmx")
command="$command -Djmxxxx ";;
"log4j")
command="$command -Dlog4j.debug ";;
"*")
echo unknow args $key:$value;;
esac
done
command="$command -jar /home/$USER/jetty/start.jar -DprocessName=$processName -Xmx2048m -Djetty.home=$jettyhome --ini=/home/$USER/jetty/start.ini -Dlog4j.configuration=/home/$USER/wsmp_app/cfg/log4j.properties"
kill `ps -ef | grep "processName=$processName" | grep -v grep | awk '{print $2}'` >/dev/null 2>&1
local logDirectory="/home/$USER/wsmp_app/log/$processName-$port"
if [ $isMainProcess = "true" ] ; then
logDirectory="$logDirectory-Main"
fi
local logFile="$logDirectory/jetty-$(date "+%Y-%m-%d").log"
#create log dir
if [ ! -e $logDirectory ] ; then mkdir $logDirectory ; fi
echo restarting `date "+%Y-%m-%d %H:%M:%S"` >> $logFile
nohup $command >> $logFile 2>&1 &
}
# check is jetty process start up ok
function checkWebProcess()
{
local arg=$1
local processName=${arg%=*}
local processConf=${arg#*=}
local OLD_IFS="$IFS" && IFS="," && local args=($processConf) && IFS="$OLD_IFS"
for arg in ${args[@]}
do
local key=${arg%:*}
local value=${arg#*:}
if [ "$key" = "port" ] ; then
local port=$value
break
fi
done
echo -n checking process $processName on port $port
#1 minites timeout
for time in {1..60}
do
app=`curl --connect-timeout 2 --noproxy 127.0.0.1 -s http://127.0.0.1:$port/wsmp/portallinkservlet | grep -i wsmp`
echo -n "."
if [ "$app" != "" ]; then
echo ok
return
fi
sleep 1
done
echo timeout, check logs in /home/$USER/wsmp_app/log/$processName-$port/
}
restart_web.sh :
#!/bin/bash
BASE_SHELL=$(readlink -f $0) && BASE_SHELL=${BASE_SHELL%/wsmp_app/bin*} && BASE_SHELL=$BASE_SHELL/wsmp_app/bin/basefuncs.sh && $BASE_SHELL
source $BASE_SHELL
ENV_JETTYS=`env | grep jetty`
for jetty in $ENV_JETTYS
do
unset ${jetty%=*}
done
source ~/wsmp_app/cfg/jetty.conf
checkUser
OLDPWD=`pwd`
cd ~/jetty/
restartweb $1
cd $OLDPWD
exit
jetty.conf: #acturally this file is used as a shell script.
# supported args :
#
# jettyX="main,port:8080,debug:9090,jmx:10010,log4j"
#
# main : web mian process
# debug：remote debug,port xxx
# jmx ：jxm,port xxx,//TODO
# log4j：log4j debug
#
#
#
#
#
export jetty0="main,port:8080"
export jetty1="port:8081"
I'm using jetty on my app,and running serveral processes at the same time , so I write restart shell script.
bug I randomly got core dump on basefuncs.sh line 162, which is:
for time in {1..60}
I checked there is no core.PID file,and
Segmentation fault (core dumped) error in unix shell script. Help finding bug?
How to generate a core dump in Linux when a process gets a segmentation fault?
could not prevent the core dump error.
anyhelp is appreciated.
And finally I find out the reason for core dump. It's because the kill part. kill will not kill the process right away , there is some time delay,that's why I always get core dump error. I add a for loop to check whether this process is completely killed , and then try to start the process, which successfully fix this problem and no core dump any more. As for what really causes core dump , I still don't understand it. Any information will be appreciated. –