#!/bin/sh    
#设置环境变量  
export PYTHONPATH=/python/python_workspace/python_runapp:$PYTHONPATH  
#检测进程是否运行    
isRunning=$(ps -ef | grep "app" | grep -v "grep" | grep -v "vim")    
if [ "$isRunning" ] ; then   
    echo "app service was already started"   
else   
    echo "app service was not started"   
    echo "Starting service ..."   
    python /python/application/app.py > /dev/null 2>&1 &    
fi   
   
#检测站点是否可正常访问    
#$? 指访问状态  
#0 正常    
#urls='http://www.app.com http://www.jbxue.com'  
urls='http://www.app.com'   
for url in $urls    
    do   
        curl -sf $url    
        state=$?    
        if [ $state != 0 ]; then   
            PIDS=`ps -ef | grep "app" | grep -v "grep" | grep -v "vim" | grep -v "sh" | awk {"print $2"}`    
            for P in $PIDS    
                do   
                    kill -9 $P    
                done   
            python /python/application/app.py > /dev/null 2>&1 &    
        else   
            echo "$url is available"   
        fi   
done 

crontab -e  
*/20 * * * * bash /sh/check_app.sh