keepalived–nginxcheck健康检查脚本

layout: post
title: keepalived—nginxcheck
date: 2018-03-13
tags: [“Cluster services”,”软件服务”]

function init(){
    LOCKFILE=/tmp/nginxCheck.lock
    [ -f $LOCKFILE ] && echo -e "\033[31m nginxCheck is running will exit \033[0m"&&exit '' touch $LOCKFILE
    /sbin/ifconfig bond0 &>/dev/null
    BOND0=$?
    /sbin/ifconfig em1 &>/dev/null
    ETH0=$?
    if [ $BOND0 -eq 0 ];then
        ETH=bond0;
    elif [ $ETH0 -eq 0 ];then
            ETH=em1
    else
            ETH=em2;
    fi
    USER=`whoami`
    IP=$(/sbin/ifconfig $ETH ' grep -i "inet addr" ' awk '{print $2}' ' sed 's/addr://')
    VIP=$(grep label /etc/keepalived/keepalived.conf  ' tr '/' ' ' ' awk '{print $1}')
    NGPID=$(ps -ef ' grep "nginx: master" ' grep -v grep ' awk '{print $2}')
    if [[ ! -n "$NGPID" ]];then
        echo -e "\033[31m nginx master not running \033[0m\n"
        if [ $USER == root ];then
            echo -e "\033[31m user is root try start nginx \033[0m\n"
            killall nginx
             sleep 3
              /app/tengine-2.2.1/sbin/nginx
            START_STATUS=$?
            if [ $START_STATUS == 0  ];then
                echo -e "\033[32m nginx is restart sucess \033[0m\n"
                    echo "nginx restart `date`" >> /tmp/nginxcheck.log
            else
                echo -e "\033[31m nginx is restart fail please  chechk \033[0m \n"
            fi
        else
            echo -e "\033[31m user is not root \033[0m\n"
        fi
    else 
        echo -e "\033[32m nginx master is running \033[0m \n"
    fi
    N=1
    M=$(grep "listen" /app/tengine-2.2.1/conf/nginx.conf ' grep -v ^# ' tr ';' ' ' ' awk '{print $2}' ' wc -l)
}
checkVipPort(){
    echo -e "\033[33m start check VIP status \033[0m \n"
    ifconfig'grep $VIP >> /dev/null
    VIP_STATUS=$?
    if [ $VIP_STATUS == 0 ];then
        echo -e "\033[32m  $VIP in localhost \033[0m \n"
        IS_IN=1
    else 
        echo -e "\033[31m  $VIP not in localhost \033[0m \n"
        IS_IN=0
    fi
    echo -e "\033[33m check VIP status end \033[0m \n"
    echo -e "\033[33m start check port connect status \033[0m \n"
    if [ $IS_IN == 0 ];then
        VIP=$IP
    fi
    for i in $(grep "listen" /app/tengine-2.2.1/conf/nginx.conf ' grep -v ^# ' tr ';' ' ' ' awk '{print $2}')
    do
            PORT=$i
            curl -i -m 1 "http://$VIP:$PORT/lvs.jsp" &>/dev/null
            GLOBAL_STAT=$?
        if [[ $GLOBAL_STAT -eq 0  ]];then
                echo -e "\033[32m  $VIP:$PORT is running \033[0m\n"
        elif [[ $N -lt $M ]];then
            echo -e "\033[31m  $VIP:$PORT is stoped \033[0m\n"
                let N++
                continue
            else
            if [ $USER == root ];then
                            echo -e "\033[31m user is root try start nginx \033[0m\n"
                            killall nginx
                sleep 3
                    /etc/init.d/keepalived restart
                            /app/tengine-2.2.1/sbin/nginx
                            START_STATUS=$?
                            if [ $START_STATUS == 0  ];then
                                    echo -e "\033[32m nginx is restart sucess \033[0m\n"
                                    echo "nginx restart `date`" >> /tmp/nginxcheck.log
                            else
                                    echo -e "\033[31m nginx is restart fail please  chechk \033[0m \n"
                            fi
                    else
                            echo -e "\033[31m user is not root \033[0m\n"
                    fi
            fi
        #del lock file
        rm -f $LOCKFILE
    done
    echo -e "\033[33m check port connect status end  \033[0m \n"
}
init
checkVipPort