Monit进程管理

优点

缺点

set daemon 60 # check services at 1-minute intervals 
set logfile /var/log/monit.log 
set pidfile /var/run/monit.pid 
set idfile /var/.monit.id 
set statefile /var/.monit.state 
set mailserver smtp.xdays.me port 25 
  username "admin@xdays.me" password "password" 
  #using tlsv1 
set mail-format { from: admin@xdays.me } 
set alert easedays@gmail.com # receive all alerts

set httpd port 2812 and
    use address localhost
    allow localhost
check system cloud.xdays.me 
  if loadavg (1min) > 4 then alert 
  if loadavg (5min) > 2 then alert 
  if memory usage > 75% then alert 
  if swap usage > 25% then alert 
  if cpu usage (user) > 70% then alert 
  if cpu usage (system) > 30% then alert 
  if cpu usage (wait) > 20% then alert 
check process nginx with pidfile /var/run/nginx.pid 
  start program = "/usr/sbin/service nginx start" 
  stop program = "/usr/sbin/service nginx stop" 
  if cpu > 60% for 2 cycles then alert 
  if cpu > 80% for 5 cycles then restart 
  if totalmem > 200.0 MB for 5 cycles then restart 
  if children > 250 then restart 
  if loadavg(5min) greater than 10 for 8 cycles then stop 
  if failed host www.xdays.me port 80 protocol http 
    and request "/" 
  then restart 
  if failed port 443 type tcpssl protocol http 
    with timeout 15 seconds 
  then restart 
  if 3 restarts within 5 cycles then timeout

monit -t 检测配置文件语法
monit reload 重新加载配置文件
monit status 查看服务状态
monit start|stop|restart 启动和关闭服务