Linux系统服务监控报警脚本

#!/bin/bash
#
#**************************************************#
#Author:        陪你听风
#QQ:            [e-mail]
#Date:          2023-09-06
#FileName:      tomcat_monitor.sh
#URL:           189102195xx
#Description:   The script is init OS
#Copyright(C): 2023All rights reserved
#**************************************************#
echo -e  "\033[32m监测tomcat服务运行状态，如果运行异常，发送邮件通知，并且启动服务"
export info=""
export email="[e-mail]"
servername=`hostname`
ip=`ifconfig|grep inet |egrep -v inet6  |awk '{print $2}'|sed ':a;N;$!ba;s/\n/,/g'`
check_time=`date +"%F %T %A"`
title=`echo -e "服务器信息检测脚本\r\n主机:$servername\r\nIP地址：$ip\r\n检测时间：$check_time"`
start_nginx(){
    systemctl start nginx
}
check_nginx(){
PID=`ps aux |grep nginx |egrep -v grep |awk '{print $2}'`
PORT=`netstat -lnptu |grep :80 |egrep -v "tcp6|grep" |grep nginx|tr -s " " |cut -d ":" -f2|awk  '{print $1}'`
if [[  ! -z $PID  && $PORT -eq 80  ]];then
     message="nginx正在运行，进程号是:\n$PID,\n监听端口是:\n$PORT"   
     echo -e  "\033[32m$message\033[0m"
            
else
     echo -e "\033[31m警告！未检测到nginx运行的信息"
     echo -e "nginx服务出现中断,主机:$servername，IP地址：$ip ，检测时间：$check_time" | mail -s "主机:$servername nginx服务出现中断，IP地址：$ip，检测时间：$check_time" -r "$email" $email
     echo -e "准备启动nginx服务......" 
     start_nginx
     echo -e "nginx服务启动成功......"
     echo -e "nginx服务已经恢复,主机:$servername， IP地址：$ip ，检测时间：$check_time,进程号是:$PID,监听端口是:$PORT" |mail -s  "n主机:$servername nginx服务已经恢复，IP地址：$ip检测时间：$check_time" -r "$email" $email
     check_nginx      
fi
}

while : 
do
    echo -e "\033[32m服务器信息检测脚本\r\n主机:$servername\r\nIP地址：$ip\r\n检测时间：$check_time"
    check_nginx
    echo "---------------------------------------------------------------"
    sleep 2s
done