本文是继上一篇 FRP 内网穿透-不做留守嗑盐人 的续文。

上文提出的问题

• 内网服务器断网
• FRPc程序挂了
• 以上两个问题都有可能是因为服务器被重启了

那么下面就是解决办法

Crontab -e 设置定时任务

crontab -e # 进入类vim页面

# 输入如下：意思是每个小时的三十分钟，运行下面两个 shell 脚本

30 * * * * /usr/bin/bash /home/xxx/frp/restart.sh
30 * * * * /usr/bin/bash /home/xxx/frp/checkNetwork.sh

FRPc 检查和重启代码

restart.sh

#!/bin/bash
echo "CHECK FRPC DATE:" $(date +"%Y-%m-%d %H:%M:%S")

ps -ef | grep "./frpc -c ./frpc.ini" | grep -v "grep"
if [ "$?" -eq 0 ]
then
   echo "process already started!"
   echo -e `date '+%F %T %A'` "\n process already started!" >> CHECK_FRPC_LOG.txt
else
   echo "process has been closed"
   echo -e `date '+%F %T %A'` "\n process has been closed!" >> CHECK_FRPC_LOG.txt
   nohup ./frpc -c ./frpc.ini &  #启动应用
   echo "process has been restarted"
   echo -e `date '+%F %T %A'` "\n process has been restarted" >> CHECK_FRPC_LOG.txt
fi
exit 0

Network 检查和重连代码

checkNetwork.sh

#!/bin/bash

#检测网络链接畅通
function network()
{
    #超时时间
    local timeout=1

    #目标网站
    local target=www.baidu.com

    #获取响应状态码
    local ret_code=`curl -I -s --connect-timeout ${timeout} ${target} -w %{http_code} | tail -n1`

    if [ "x$ret_code" = "x200" ]; then
        #网络畅通
        return 1
    else
        #网络不畅通
        return 0
    fi
    return 0
}
network
if [ $? -eq 0 ];then
    # 网络断了，那么执行下面命令重连
    echo "The network is bad"
    echo -e `date '+%F %T %A'` "\n The network is bad!" >> CHECK_NETWORK_LOG.txt
    curl -s -o /dev/null  -d "DDDDD=账号&upass=密码&0MKKey=" https://drcom.szu.edu.cn
    network
    if [ $? -eq 1 ];then
        echo "The network has been reconnected!"
        echo -e `date '+%F %T %A'` "\n The network has been reconnected!" >> CHECK_NETWORK_LOG.txt
    else
        echo "Unable to connect network"
        echo -e `date '+%F %T %A'` "\n Unable to connect network!" >> CHECK_NETWORK_LOG.txt
    fi
    exit 0
fi

echo "The network is fine"
echo -e `date '+%F %T %A'` "\n The network is fine!" >> CHECK_NETWORK_LOG.txt
exit 0