拨测ip+port 告警 telnet nc

1.telnet 

[root@master-node156 mon_port]# cat mycheck_port|egrep -v '^$'
#! /bin/sh
#企业微信警配置
alert=True      #配置True为启动告警,其它为不开启
#企业微信机器人ID
userkey="5642127c-woab-shib-9da8-ac2f4adashabic003"
echo 'a' >/tmp/problemip.txt
cur_datetime=`date +%Y%m%d-%H:%M:%S`
homeDir=`dirname $0`
function check_port {
        pkill -9 telnet
    timeout 2  ssh 127.0.0.1 telnet $1      >/tmp/a.txt
    myresult=`egrep -i 'Escape' /tmp/a.txt|wc -l`
        if [[ $myresult -eq 1 ]];then
            echo "$cur_datetime 端口$port listening,status is ok..." | tee -a $homeDir/port_status.log

        else
            echo "$cur_datetime Error 端口$port closed,status is failed..." | tee -a $homeDir/port_status.log
            if [ "$alert" = "True" ];then
            echo $1 >/tmp/problemip.txt
            sed -i 's# #-#' /tmp/problemip.txt
            hostport=`cat /tmp/problemip.txt`
            curl -s -X POST -H "'Content-type':'application/json'" -d '{ "msgtype": "text", "text": { "content": "端口未启动  \r 主机端口: '$hostport'  \r 时间: '$cur_datetime'", "mentioned_list":["wangqing",""], "mentioned_mobile_list":["",""] } }' https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=$userkey
            fi
            sleep 1
        fi
        }
for i in `cat /opt/mon_port/8080.txt`;do a=`echo $i|awk  -F[:] '{print $1" "$2}'`;check_port "$a"; done

2.nc

[root@master-node156 mon_port]# cat check_port |grep -v '^$'
#! /bin/sh
#企业微信警配置
alert=True      #配置True为启动告警,其它为不开启
#企业微信机器人ID
userkey="5wo2127c-shib-458b-9da8-ac2fshabidc003"
while getopts ":h:p:" option
do
    case "$option" in
        h)
            host=$OPTARG;;
        p)
            port=$OPTARG;;
        *)
            echo "Usage: args [-h] [-p]"
            echo "-h means host"
            echo "-p means port"
            exit 1
            ;;
    esac
done
if [ ! $port ];then
    echo "请输入端口号,如 $0 -h 192.168.1.10 -p 80"
    echo "没有-h参数,默认检查本地端口"
    exit 1
fi
cur_datetime=`date +%Y%m%d-%H:%M:%S`
homeDir=`dirname $0`
localIp=$(/sbin/ifconfig -a|grep inet|grep -v 127.0.0.1|grep -v inet6|awk '{print $2}'|tr -d "addr:"|head -n 1)
if [ ! $host ];then
    host=$localIp
fi
#res=`$homeDir/check_tcp -H $host -p $port`
#if [[ "$res" =~ "OK" ]];then
#nc -w 3 $host $port < /dev/null > /dev/null 2>&1
nc -w 3 -z $host $port > /dev/null 2>&1
if [ $? = 0 ] ; then
    echo "$cur_datetime 端口$port listening,status is ok..." | tee -a $homeDir/port_status.log
    exit 0
else
    echo "$cur_datetime Error 端口$port closed,status is failed..." | tee -a $homeDir/port_status.log
    if [ "$alert" = "True" ];then
        curl -s -X POST -H "'Content-type':'application/json'" -d '{ "msgtype": "text", "text": { "content": "端口未启动  \r 端口: '$port' \r 服务器: '$host' \r 时间: '$cur_datetime'", "mentioned_list":["wangqing",""], "mentioned_mobile_list":["",""] } }' https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=$userkey
    fi
    exit 1
fi