Linux scheduled restart tomcat and configuration tasks timed Detailed

Linux scheduled restart tomcat and configuration tasks timed Detailed

1. First, write a script to restart tomcat

#!/bin/sh
TOMCAT_PATH=tomcat地址路径/bin

echo "TOMCAT_PATH is $TOMCAT_PATH"

PID=`ps aux | grep tomcat地址路径 | grep java | awk '{print $2}'`

if [ -n "$PID" ]; then
    echo "Will shutdown tomcat: $PID"
    $TOMCAT_PATH/shutdown.sh -force
    sleep 5
else echo "No Tomcat Process $PID"
fi

ps -ef|grep -v grep|grep tomcat地址路径 | grep java |awk '{print "kill -9 "$2}'|sh
sleep 1

$TOMCAT_PATH/startup.sh

sleep 50

for((i=1;i<5;i++))
do
    LASTINFO=`tail -n 1 tomcat地址路径/logs/catalina.out |grep 'INFO: Server startup in'`
    if [ -n "$LASTINFO" ]; then
        break
    else
        ps -ef|grep -v grep|grep tomcat地址路径 | grep java |awk '{print "kill -9 "$2}'|sh
        sleep 1
        $TOMCAT_PATH/startup.sh
        sleep 50
    fi
done

2. assign permissions to the file

chmod 777 restart_tomcat.sh (file name - my name here restart_tomcat.sh)

Format created directly under 3.window system, you need to modify the file

vi restart_tomcat.sh 
use the following command to view the file format 
: set ff or: set fileformat 
can see the following information 
fileformat = = DOS or fileformat UNIX 
using the following commands to change the file format 
: set ff = UNIX or: set fileformat = UNIX 
save and exit 
: wq  

 

4. Does the manual test files can be executed ./restart_tomcat.sh  

ps: as prompt -bash: ./restart_tomcat.sh: / bin / sh ^ M: bad interpreter: No such file or directory error, please review the file format has been modified successfully!

5. Add the Crontab task scheduler crontab -e

crontab file rows of six fields, different fields splitting space or tab keys. The first five fields specify the time the command to run the 
minute ( 0-59 ) 
hour ( 0-28 ) 
date ( 1-31 ) 
month ( 1-12 ) 
day of the week ( 0-6 , where 0 represents Sunday) 
The sixth field a string to be executed at the appropriate time

example:

# 6 am every day 10 points
 106 * * * Script path + script full name 

ps: "crontab: installing new crontab " for success. If an error occurs, a close look crontab format is correct!

6. Review the task is successfully set

crontab - L # represents a list of all scheduled tasks 

crontab -r # indicates the timing task delete users, when this command is executed, all users of the following scheduled task will be deleted after execution crontab -l prompts the user: "no crontab for ADMIN "