运维经验分享（七）-- Linux Shell之ChatterServer服务控制脚本第三次优化

运维经验分享作为一个专题，目前共7篇文章《运维经验分享（一）-- Linux Shell之ChatterServer服务控制脚本》

《运维经验分享（二）-- Linux Shell之ChatterServer服务控制脚本二次优化》

《运维经验分享（三）-- 解决Ubuntu下crontab不能正确执行Shell脚本的问题（一）》

《运维经验分享（四）--关于 java进程管理的服务控制脚本编程思路分析》

《运维经验分享（五）-- 改进的java进程管理的服务控制脚本》

《运维经验分享（六）-- 深究crontab不能正确执行Shell脚本的问题（二）》

《运维经验分享（七）-- Linux Shell之ChatterServer服务控制脚本第三次优化》

====================================分割线======================================刚接到开发人员要求，今晚上线新的ChatterServer版本，新版本目录存在一些变化，要求我出一个新的服务控制脚本，因此在前两版的基础上有了第三版，前两版地址《运维经验分享（一）-- Linux Shell之ChatterServer服务控制脚本》和《运维经验分享（二）-- Linux Shell之ChatterServer服务控制脚本二次优化》
增加softlink invoke和今天改良的shell脚本中的一些好的方法和技巧，今天改良的shell脚本请参考文章《运维经验分享（五）-- 改进的java进程管理的服务控制脚本》。
有几个已知的问题：
BASENAME因为时间原因使用了绝对路径，后期将更新新版

log日志的某些处理上有些多余，将于后期更新新版

其他问题欢迎各位网友、博友批评指正和留言！
现将脚本内容粘贴如下：

#!/bin/bash
#chkconfig: 345 86 14
#description: Startup and shutdown script for ChatterServer(Port:$SERVICEPORT)

# Public header
# resolve links - $0 may be a softlink
PRG="$0"
while [ -h "$PRG" ]; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`/"$link"
fi
done
# Get standard environment variables
PRGDIR=`dirname "$PRG"`
# Public header
WORKDIR=$PRGDIR
# end public header
# -Public header

#BASEDIR=..
BASEDIR=/data/chatter
VERSION=1.0.0-snapshot
SERVER=$BASEDIR/chatter-$VERSION\.jar
LOGDIR=$BASEDIR/logs
if [[ ! -d $LOGDIR ]]; then
mkdir $LOGDIR
fi
PORTFILE=$BASEDIR/conf/constant.properties
# TODO
# reslove dos2unix packages
SERVICEPORT=$(cat $PORTFILE | dos2unix | grep ^port | awk -F '=' '{print $2}')
PIDFILE=$LOGDIR/chatter.pid
BASENAME=chatter
ARGS="-Xms4g -Xmx8g -Xmn8g -Xss256k -XX:MaxPermSize=64m -XX:-UseParallelGC -XX:+UseParallelOldGC -XX:ParallelGCThreads=4 -XX:+UseConcMarkSweepGC -XX:MaxTenuringThreshold=30 -XX:SurvivorRatio=6"
# -Xms2g -Xmx2g -Xmn2g -Xss128k -XX:MaxPermSize=64m -XX:-UseParallelGC -XX:+UseParallelOldGC -XX:ParallelGCThreads=4 -XX:+UseConcMarkSweepGC -XX:MaxTenuringThreshold=30 -XX:SurvivorRatio=6

status() {
if [[ ! -f $PIDFILE ]]; then
echo "ERROR: ChatterServer(Port:$SERVICEPORT) pid file is NOT exist"
exit 1
fi
if [[ ! -d /proc/$(cat $PIDFILE) ]]; then
echo "ERROR:  ChatterServer(Port:$SERVICEPORT) is NOT running"
exit 1
else
echo "SUCCESS: ChatterServer(Port:$SERVICEPORT) pid($(cat $PIDFILE)) is OK"
fi
# The judgment priority: pid > port > piffile
# netstat run by common user will get some error output, so we put those error outout to /dev/null
if [[ $(netstat -anop 2>/dev/null | grep $SERVICEPORT | grep LISTEN) ]];then
echo "SUCCESS: ChatterServer(Port:$SERVICEPORT) is OK"
else
echo "ERROR: ChatterServer(Port:$SERVICEPORT) port is NOT listen"
exit 1
fi
}

start() {
if [[ -e $PIDFILE ]]; then
if [[ -d /proc/$(cat $PIDFILE) ]]; then
echo "ERROR: pidfile $PIDFILE exist, ChatterServer(Port:$SERVICEPORT) has started with pid $(cat $PIDFILE)"
## pid file can be deleted
#/bin/rm -f $PIDFILE
exit 1
fi
fi
if [[ -e $SERVER ]]; then
echo "INFO: Starting ChatterServer(Port:$SERVICEPORT)"
# Start ChatterServer core daemon
# Why using "date +"%Y%m%d""? Because we just need restart this once per day
# For ChatterServer wiil find some file in $BASEDIR
#cd $LOGDIR/../
cd $BASEDIR
## TODO
## Because current directory has changed
#SERVER=./chatter-$VERSION\.jar
#LOGDIR=./logs
#nohup java -jar $SERVER $ARGS >>$LOGDIR/console-$(date +"%Y%m%d").out 2>&1 &
if java -jar $SERVER $ARGS >>$LOGDIR/console.out 2>&1 &
then
sleep 2
if [[ -d /proc/$! ]]; then
echo $! > $PIDFILE
echo "SUCCESS: ChatterServer(Port:$SERVICEPORT) start OK"
echo "[ $(date +"%D %T") ] SUCCESS: ChatterServer(Port:$SERVICEPORT) started with pid $(cat $PIDFILE) " >>$LOGDIR/service.log
fi
elif java -jar $SERVER $ARGS >>$LOGDIR/console.out 2>&1 &
then
sleep 2
if [[ -d /proc/$! ]]; then
echo $! > $PIDFILE
echo "SUCCESS: ChatterServer(Port:$SERVICEPORT) start OK"
echo "[ $(date +"%D %T") ] SUCCESS: ChatterServer(Port:$SERVICEPORT) started with pid $(cat $PIDFILE) " >>$LOGDIR/service.log
fi
else
echo "ERROR: ChatterServer(Port:$SERVICEPORT) start failed"
# Setting up start log
echo "[ $(date +"%D %T") ] ERROR: ChatterServer(Port:$SERVICEPORT) start failed " >>$LOGDIR/service.log
exit $RETVAL
fi
else
echo "ERROR: Couldn't find $SERVER"
# TODO We just think this is not essential
# Do NOT setting up log here
exit 1
fi

}
stop() {
if [[ -e $PIDFILE ]]; then
pid=$(cat $PIDFILE)
#if kill -TERM $PIDFILE >/dev/null 2>&1
# TODO remove debug info
#echo "DEBUG: $LOGDIR/console-$(date +"%Y%m%d").out"
# Ubuntu can NOT use "usleep", so use "sleep" instead
# usleep 100000
if kill -TERM $pid >>$LOGDIR/console-$(date +"%Y%m%d").out && sleep 1
then
if test -d /proc/$(cat $PIDFILE)
then
sleep 60
else
echo "SUCCESS: ChatterServer(Port:$SERVICEPORT) stop OK with TERM"
# Setting up stop log
echo "[ $(date +"%D %T") ] SUCCESS: ChatterServer(Port:$SERVICEPORT) stop OK with TERM " >>$LOGDIR/service.log
# Because we can NOT use usleep , so we must comment out sleep 1 next
#sleep 1
# Ubuntu can NOT use "usleep", so use "sleep" instead
# usleep 100000
# Remove pid file
/bin/rm $PIDFILE
fi
elif kill -KILL $pid >/dev/null 2>&1 && sleep 1
then
if test -d /proc/$(cat $PIDFILE)
then
sleep 60
else
echo "SUCCESS: ChatterServer(Port:$SERVICEPORT) stop OK with KILL"
# Setting up stop log
echo "[ $(date +"%D %T") ] SUCCESS: ChatterServer(Port:$SERVICEPORT) stop OK with KILL " >>$LOGDIR/service.log
# Because we can NOT use usleep , so we must comment out sleep 1 next
#sleep 1
# Remove pid file
/bin/rm $PIDFILE
fi
elif kill -9 `cat $PIDFILE` >>$LOGDIR/console.out 2>&1
then
while [[ -d /proc/$(cat $PIDFILE) ]]; do
leep 1
done
if test -d /proc/$(cat $PIDFILE)
then
echo "server stop failed"
exit 1
else
echo "SUCCESS: ChatterServer(Port:$SERVICEPORT) stop OK with KILL"
# Setting up stop log
echo "[ $(date +"%D %T") ] SUCCESS: ChatterServer(Port:$SERVICEPORT) stop OK with KILL " >>$LOGDIR/service.log
# Because we can NOT use usleep , so we must comment out sleep 1 next
#sleep 1
# Remove pid file
/bin/rm $PIDFILE
fi
else
echo "ERROR: ChatterServer(Port:$SERVICEPORT) stop faild"
# Setting up stop log
echo "[ $(date +"%D %T") ] ERROR: ChatterServer(Port:$SERVICEPORT) stop failed " >>$LOGDIR/service.log
exit 1
fi
else
echo "ERROR: No ChatterServer(Port:$SERVICEPORT) running"
# TODO We just think this is not essential
# Do NOT setting up log here
exit 1
fi
}

restart() {
echo "INFO: Restarting ChatterServer(Port:$SERVICEPORT)"
stop
# # Those lines will remove in next release
# if [[ $(netstat -anop 2>/dev/null | grep $SERVICEPORT | grep LISTEN) ]]; then
#     echo "WARNNING: port $SERVICEPORT is in using, must waiting"
#     sleep 5
#     if [[ $(netstat -anop 2>/dev/null | grep $SERVICEPORT | grep LISTEN) ]]; then
#         echo "WARNNING : port $SERVICEPORT is still in using, must waiting"
#         sleep 2
#     fi
# fi
# -Those lines will remove in next release
# Do NOT using sleep any seconds here with stop() function used
start
}

case $1 in
status)
status
;;
start)
start
;;
stop)
stop
;;
restart)
restart
;;
help|*)
echo "Usage: $0 {status|start|stop|restart|help} with $0 itself"
exit 1
;;
esac
# replace "exit 0" with ":"
#exit 0
:

====================================分割线======================================运维经验分享作为一个专题，目前共7篇文章《运维经验分享（一）-- Linux Shell之ChatterServer服务控制脚本》

《运维经验分享（二）-- Linux Shell之ChatterServer服务控制脚本二次优化》

《运维经验分享（三）-- 解决Ubuntu下crontab不能正确执行Shell脚本的问题（一）》

《运维经验分享（四）--关于 java进程管理的服务控制脚本编程思路分析》

《运维经验分享（五）-- 改进的java进程管理的服务控制脚本》

《运维经验分享（六）-- 深究crontab不能正确执行Shell脚本的问题（二）》

《运维经验分享（七）-- Linux Shell之ChatterServer服务控制脚本第三次优化》

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