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Linux 系统 CPU、内存、硬盘、网络、LNMP 服务整体监控邮件报警
功能介绍：
1. 系统方面：
（1）CPU 检查报警
（2）内存检查，自动释放
（3）硬盘检查报警
（4）网络检查
2. 服务方面：
（1）NGINX 检查报警
（2）PHP 检查报警
（3）MySQL 检查报警
代码如下：
#!/bin/bashIP=`ifconfig|awk'NR==2{print $2}'|awk-F: '{print $2}'`# 一. 检查系统情况 #1.CPU 检查 echo"##########CPU state show##########"echo"_____________________________________________________________________________________________"top-n 1|grepCpuus=`top-n 1|grepCpu|awk'{print $2}'|awk-F"%"'{print $1}'`us100=`echo"$us*100"|bc|awk-F"."'{print $1}'`#echo us*100 = $us100sy=`top-n 1|grepCpu|awk'{print $3}'|awk-F"%"'{print $1}'`sy100=`echo"$sy*100"|bc|awk-F"."'{print $1}'`#echo sy*100 = $sy100cpu_number=`echo"$us100+$sy100"|bc`#echo us*100+sy*100 = $cpu_numberif[$cpu_number -gt "7000"];thenecho"$IP CPU is hight"| mail -s "warn!server: $IP CPU is hight"15210942688@163.comelseecho-e "\033[32m ...CPU is (OK) ! \033[0m"fiecho"_____________________________________________________________________________________________"echo""#2. 内存检查 echo"##########MEM state show##########"echo"_____________________________________________________________________________________________"free-m|awk'NR<3{print}'free-g |grep-i mem |awk'{if($4 < 10){printf("3") >"/proc/sys/vm/drop_caches"}}';echo-e "\033[32m ... 内存 is (OK) ! \033[0m"echo"_____________________________________________________________________________________________"echo""#3. 硬盘空间检查 echo"##########DRIVE state show##########"echo"_____________________________________________________________________________________________"df-huse_df=`df-h|awk'NR==3{print $4}'`if[$use_df == "90%"];thenecho"$IP DF is hight"| mail -s "warn!server: $IP DF is hight"15210942688@163.comelseecho-e "\033[32m ... 硬盘 is (OK) ! \033[0m"fiif[$use_df == "95%"];thenecho"$IP df is hight"| mail -s "warn!server: $IP DF is hight"15210942688@163.comelseecho-e "\033[32m ... 硬盘 is (OK) ! \033[0m"fiecho"_____________________________________________________________________________________________"echo""#4. 网络检查 echo"##########NETWORK state show##########"ifconfig|awk-F":"'NR==2 {print $2}'|awk'BEGIN{print"IP"}{print $1}'ifconfig|grepRX|awk'NR==2{print}'echo-e "\033[32m ... 网络 is (OK) ! \033[0m"echo"_____________________________________________________________________________________________"echo""##################################################################################################### 二. 检查 nginx、php、mysql 状态 #1.nginx ps and netstatecho"##########nginx state show##########"echo"_____________________________________________________________________________________________"nginx_port_number=`netstat-lntp|grep:80|wc-l` #1nginx_process_number=`ps-ef|grepnginx|grep-vgrep|wc-l` #5if[$nginx_port_number == "0"];thenecho"$IP nginx is down"| mail -s "warn!server: $IP nginx_port is down"15210942688@163.com/usr/local/nginx/sbin/nginxif[$test_nginx != "0"];thenecho"$IP nginx is down"| mail -s "warn!server: $IP not't restart"15210942688@163.comfielseecho-e "\033[32m ...nginx is running(OK) ! $(date) \033[0m"fiif[$nginx_process_number == "0"];thenecho"$IP nginx is down"| mail -s "warn!server: $IP nginx_process is down"15210942688@163.com/usr/local/nginx/sbin/nginxtest_nginx2=echo$?if[$test_nginx2 != "0"];thenecho"$IP nginx is down"| mail -s "warn!server: $IP not't restart"15210942688@163.comfielseecho-e "\033[32m ...nginx is running(OK) ! $(date) \033[0m"fiecho"_____________________________________________________________________________________________"echo""#2.php ps and netstatecho"##########php state show##########"echo"_____________________________________________________________________________________________"php_fpm_port_number=`netstat-lntp|grep:9000|wc-l` #1php_fpm_process_number=`ps-ef|grepphp-fpm|grep-vgrep|wc-l` #129if[$php_fpm_port_number == "0"];thenecho"$IP php-fpm is down"| mail -s "warn!server: $IP php_fpm_port is down"15210942688@163.com/etc/init.d/php-fpmrestarttest_php1=echo$?if[$test_php1 != "0"];thenecho"$IP php-fpm is down"| mail -s "warn!server: $IP not't restart"15210942688@163.comfielseecho-e "\033[32m ...PHP is running(OK) ! $(date) \033[0m"fiif[$php_fpm_process_number == "0"];thenecho"$IP nginx is down"| mail -s "warn!server: $IP php_fpm_process is down"15210942688@163.com/etc/init.d/php-fpmrestarttest_php2=echo$?if[$test_php2 != "0"];thenecho"$IP php is down"| mail -s "warn!server: $IP not't restart"15210942688@163.comfielseecho-e "\033[32m ...PHP is running(OK) ! $(date) \033[0m"fiecho"_____________________________________________________________________________________________"echo""##3.mysql ps and netstat##echo "##########mysql state show##########"#echo "_____________________________________________________________________________________________"#mysql_port_number=`netstat -lntp|grep :3306|wc -l` #1#mysql_process_number=`ps -ef|grep mysql|grep -v grep|wc -l` #2##if [$mysql_port_number == "0"];then# echo "$IP mysql is down" | mail -s "warn!server: $IP mysql_port is down" 15210942688@163.com# /etc/init.d/mysqld restart# test_mysql1=echo $?# if [$test_mysql1 != "0"];then# echo "$IP mysql is down" | mail -s "warn!server: $IP not't restart" 15210942688@163.com# fi#else# echo -e "\033[32m ...MYSQL is running(OK) ! $(date) \033[0m"#fi##if [$mysql_process_number == "0"];then# echo "$IP mysql is down" | mail -s "warn!server: $IP mysql_process is down" 15210942688@163.com# /etc/init.d/mysqld restart# test_mysql2=echo $?# if [$test_php2 != "0"];then# echo "$IP mysql is down" | mail -s "warn!server: $IP not't restart" 15210942688@163.com# fi#else# echo -e "\033[32m ...MYSQL is running(OK) ! $(date) \033[0m"#fi#echo "_____________________________________________________________________________________________" |
测试成功的回显如下图，可以通过计划任务 + 脚本实现实时监控。
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