Monit。我所使用的系統及服務監控軟體 :: 哇哇3C日誌

$ monit -h
Usage: monit [options] {arguments}
Options are as follows:
 -c file       Use this control file
 -d n          Run as a daemon once per n seconds
 -g name       Set group name for start, stop, restart, monitor and unmonitor
 -l logfile    Print log information to this file
 -p pidfile    Use this lock file in daemon mode
 -s statefile  Set the file monit should write state information to
 -I            Do not run in background (needed for run from init)
 -t            Run syntax check for the control file
 -v            Verbose mode, work noisy (diagnostic output)
 -H [filename] Print SHA1 and MD5 hashes of the file or of stdin if the
               filename is omited; monit will exit afterwards
 -V            Print version number and patchlevel
 -h            Print this text
Optional action arguments for non-daemon mode are as follows:
 start all      - Start all services
 start name     - Only start the named service
 stop all       - Stop all services
 stop name      - Only stop the named service
 restart all    - Stop and start all services
 restart name   - Only restart the named service
 monitor all    - Enable monitoring of all services
 monitor name   - Only enable monitoring of the named service
 unmonitor all  - Disable monitoring of all services
 unmonitor name - Only disable monitoring of the named service
 reload         - Reinitialize monit
 status         - Print full status information for each service
 summary        - Print short status information for each service
 quit           - Kill monit daemon process
 validate       - Check all services and start if not running

(Action arguments operate on services defined in the control file)

set daemon  60　# 設定監控頻率
set logfile /var/log/monit.log  # 設定log寫入的檔案，不設定會寫入/var/log/message
set mailserver msa.hinet.net  # 寄信的mailserver

set mail-format {
 From: taipei@$HOST
 Subject: [ monit通知 ] - $EVENT $SERVICE

 message:$EVENT 監控項目 $SERVICE

        時間:$DATE
        動作:$ACTION
        主機:$HOST
        描述:$DESCRIPTION
}    # 設定發信出來的Format，若是記出來為亂碼，請更改編碼

set alert [email protected]  # [email protected]會收到所有的異常通知
set alert [email protected] only on { timeout }  # [email protected]收到timeout的異常通知

set httpd port 2812 and  # 預設WEB Listen 2182 port
     allow 帳號:密碼      # WEB介面設定帳號與密碼

check system taipei.easylife.tw  # 監控主機CPU、Memory、Swap以及Uptime的數值
    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 file shadow with path /etc/shadow  # 監控密碼檔案，有人改密碼則會通知，或是被更改了屬性及權限
    if failed checksum and
       expect the sum f456845a152cdc7339f2282641a9df2c then unmonitor
    if failed permission 400 then unmonitor
    if failed uid root then unmonitor
    if failed gid root then unmonitor

check process mysqld with pidfile /var/run/httpd.pid  # 監控apache，並且可以設定alert與重新啟動服務
    start program = "/etc/init.d/httpd start" with timeout 60 seconds
    stop program  = "/etc/init.d/httpd 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

check filesystem root-filesystem with path /dev/sda2 # 監控硬碟空間的使用
    if space usage > 40% for 5 times within 15 cycles then alert
    if space usage > 99% then stop
    if inode usage > 300000 then alert
    if inode usage > 50% then stop

check host taipei-HTTP with address 220.132.12.209  # WEB的監控，會監控80 port的狀態，10秒沒回應就算Fail
    if failed port 80 protocol http with timeout 10 seconds then alert

check host taipei-PING with address 220.132.12.209  # 最基本的ping監控，可以設定ping幾次及timeout值
    if failed icmp type echo count 3 with timeout 3 seconds then alert

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