使用 Monit 監控資源

安裝 

 apt install monit 

 設定 

 cp /etc/monit/monitrc /etc/monit/monitrc.bak 

 vi  /etc/monit/monitrc  

 set httpd port 2812

 use address 0.0.0.0 # 只允全部訪問

 allow localhost # 允許 localhost 訪問

 allow yourip # 允許 指定IP 訪問

 allow admin:monit

# NGINX

check process nginx with pidfile /var/run/nginx.pid

 start program = "/bin/systemctl start nginx"

 stop program = "/bin/systemctl stop nginx"

 if failed port 443 then restart

 if 5 restarts within 5 cycles then timeout

# PHP 7.4-FPM

check process php7.4-fpm with pidfile /run/php/php7.4-fpm.pid

 start program = "/etc/init.d/php7.4-fpm start"

 stop program = "/etc/init.d/php7.4-fpm stop"

 if failed unixsocket /var/run/php/php7.4-fpm.sock then restart

 if 5 restarts within 5 cycles then timeout

# MySQL

check process mysql with pidfile /var/lib/mysql/zfun-server.pid

 start program = "/etc/init.d/mysql start"

 stop program = "/etc/init.d/mysql stop"

 if failed host localhost port 3306 protocol mysql then restart

 if 5 restarts within 5 cycles then timeout 

 http://yourip:2812  就能進入監控 

 如果希望在服務異常時接收電子郵件通知 vi /etc/monit/monitrc 

 set mailserver smtp.your-email-provider.com port 587

   username "your-email@example.com" password "your-password"

   using tlsv1

   with timeout 30 seconds

set alert your-email@example.com 

 由於此功能的權限很大，可以做到關閉及啟用的功能，使用時務必要把防火牆等限制建置好