centos7使用monit监控服务运行状态

1. 安装：

   yum  -y  install  epel-release
   yum  -y  install  monit

2. 配置：
   vim /etc/monitrc

   set daemon  30
   set log syslog
   set httpd port 2812 and
   use address 172.20.10.11
   allow 172.20.10.2
   allow admin:monit
   #with ssl {            # enable SSL/TLS and set path to server certificate
   #    pemfile: /etc/ssl/certs/monit.pem
   #}
   include /etc/monit.d/*

3. 配置监控服务：
   a. 监控apache：
   vim /etc/monit.d/apache

   check  process  apache  with  pidfile  /etc/httpd/logs/httpd.pid
   start  program  =  "/usr/bin/systemctl  start  httpd"
   stop  program    =  "/usr/bin/systemctl  stop  httpd"

   b. 监控mysql：
   vim /etc/monit.d/mysql

   check  process  mysql  with  pidfile  /usr/local/mysql/data/lee.pid
   start  program  =  "/usr/bin/systemctl  start  mysqld"
   stop  program    =  "/usr/bin/systemctl  stop  mysqld"

   c. 监控ssh：
   vim /etc/monit.d/ssh

   check  process  ssh  with  pidfile  /run/sshd.pid
   start  program  =  "/usr/bin/systemctl  start  sshd"
   stop  program    =  "/usr/bin/systemctl  stop  sshd"

4. 常用语法：
   a. 检测配置文件语法：

   monit  -t

   
   b. 启动服务：

   systemctl  start  monit

   c. 停止服务：

   systemctl  stop  monit

   d. 重启服务：

   systemctl  restart  monit

   e. 查看服务运行状态：

   systemctl  status  monit  -l

   f. 查看错误日志：

   tail  /var/log/monit.log

5. 监控页面截图：