#author(“2019-05-01T08:16:41+00:00”,“default:kazuma”,“kazuma”) トップページ

monit [#x6028982]

monitについてのまとめです。

monitのインストール [#zd5e1a95]

 # yum install epel-release
 # yum install monit
 # chkconfig monit on
 # chkconfig monit --list
 monit          	0:off	1:off	2:on	3:on	4:on	5:on	6:off
 # monit -t
 Control file syntax OK
 # service monit start

httpd [#r0c93307]

 # cd /etc/monit.d
 # vim httpd.rc
 ---
 check process httpd
      with pidfile "/var/run/httpd/httpd.pid"
      start program "/etc/init.d/httpd start"
      stop program "/etc/init.d/httpd stop"
      if failed
         host サイトURL（もし名前解決できないテスト用のURLだった場合はhostsに記載しておく）
         port 80
         protocol http
      then restart
      if 5 restarts within 5 cycles then timeout
 ---
 # monit -t
 Control file syntax OK
 # service monit restart
 monit を停止中:                                            [  OK  ]
 monit を起動中:                                            [  OK  ]
 # monit status
 The Monit daemon 5.14 uptime: 0m
 
 Process 'httpd'
  status                            Running
  monitoring status                 Monitored
  pid                               16903
  parent pid                        1
  uid                               0
  effective uid                     0
  gid                               0
  uptime                            3m
  children                          8
  memory                            11.4 MB
  memory total                      66.1 MB
  memory percent                    0.3%
  memory percent total              2.2%
  cpu percent                       0.0%
  cpu percent total                 0.0%
  port response time                0.003s to [サイトURLがここに表示]:80 type TCP/IP protocol HTTP
  data collected                    Wed, 16 Dec 2015 17:40:48

postfix [#le9f0edc]

 # cd /etc/monit.d
 # vim postfix.rc
 ---
 check process postfix with pidfile /var/spool/postfix/pid/master.pid
  group mail
  start program = "/etc/init.d/postfix start"
  stop program = "/etc/init.d/postfix stop"
  if failed port 25 protocol smtp then restart
  if 5 restarts within 5 cycles then timeout
 --- 
 # monit -t
 Control file syntax OK
 # service monit restart
 monit を停止中:                                            [  OK  ]
 monit を起動中:                                            [  OK  ]
 # monit summary
 Process 'postfix'                   Running

MySQL [#bfdefb3b]

 check process mysql with pidfile /var/run/mysqld/mysqld.pid
  start program = "/etc/init.d/mysqld start"
  stop program = "/etc/init.d/mysqld stop"
  if failed unixsocket /var/lib/mysql/mysql.sock then restart
  if 5 restarts within 5 cycles then timeout

設定 [#kbe369c9]

メール送信 [#k5c44e31]

 set alert メールアドレス
 set mailserver localhost

チェック間隔 [#xb299220]

 set daemon 30  <-- 30秒

色々なコマンド [#eb6228c8]

ステータス確認 [#vd7d4189]

 # monit status
 The Monit daemon 5.14 uptime: 1m
 
 Process 'httpd'
  status                            Not monitored
  monitoring status                 Not monitored
  data collected                    Wed, 16 Dec 2015 17:13:43

サマリー確認 [#bca0a28a]

 # monit summary
 The Monit daemon 5.14 uptime: 2m
 
 Process 'httpd'                     Connection failed
 System 'WL-KENSHO-TESTSVR01.web-life.co.jp' Running

モニタリング再開 [#v25c1575]

not monitoringとなったらモニタリングを再開する

 # monit monitor httpd
 または
 # monit monitor all

上記がよく解除されることがある場合はcronに設定してしまう。

 */30 * * * * /usr/bin/monit monitor all