Différents extraits pour http://www.tutoriels-video.fr/surveiller-letat-de-votre-serveur-avec-monit-webmin-munin-logwatc

config

# /etc/monit/conf.d/config
# Configuration de Monit de base
 
set daemon 120                  # verif toutes les 2 minutes
    with start delay 240                # 1ere verif après 4min
set logfile syslog facility log_daemon      # précise les fichiers de logs
set mailserver localhost                # précise le serveur de mail pour les alertes
set eventqueue
                    # si le serveur de mail down, on stock les alertes
    basedir /var/monit              # répertoire de stockage
    slots 100                   # nomber d'alertes max
set mail-format {                   # le format du mail
    from: monit@$HOST
    subject: monit alert --  $EVENT $SERVICE
}
set alert  votreEmail@truc.fr           # qui reçoit toutes les alertes
# set alert deuxieme-adresse@truc.fr only on { timeout } # pour être précis
set httpd port 4598 and
    allow adminMonit:pass
 
# Services
 
# Apache2
check process apache with pidfile /var/run/apache2.pid
    group apache
    start program = "/etc/init.d/apache2 start" with timeout 60 seconds
    stop program  = "/etc/init.d/apache2 stop"
    if cpu > 70% for 2 cycles then alert
 
    if cpu > 90% for 5 cycles then restart
    if children > 250 then restart
    if failed host 127.0.0.1 port 80
    protocol http then restart
    if 5 restarts within 5 cycles then timeout
 
# MySQL
check process mysqld with pidfile /var/run/mysqld/mysqld.pid
    group database
    start program = "/etc/init.d/mysql start"
    stop program = "/etc/init.d/mysql stop"
    if failed host 127.0.0.1 port 3306 then restart
    if 5 restarts within 5 cycles then timeout
 
# SSH
check process sshd with pidfile /var/run/sshd.pid
    group ssh
    start program = "/etc/init.d/ssh start"
    stop program = "/etc/init.d/ssh stop"
    if failed host 127.0.0.1 port 2242 protocol ssh then restart
    if 5 restarts within 5 cycles then timeout
 
# Postfix
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
 
# FTP
check process proftpd with pidfile /var/run/proftpd.pid
    start program = "/etc/init.d/proftpd start"
    stop program  = "/etc/init.d/proftpd stop"
    if failed port 21 protocol ftp then restart
    if 5 restarts within 5 cycles then timeout
# BIND
check process bind9 with pidfile /var/run/named/named.pid
    group bind
    start program = "/etc/init.d/bind9 start"
    stop  program = "/etc/init.d/bind9 stop"
    if failed port 53 then restart
    if 5 restarts within 5 cycles then timeout
 
# POP3
check process pop3 with pidfile /var/run/courier/pop3d.pid
    group mail
    start program = "/etc/init.d/courier-pop start"
    stop  program = "/etc/init.d/courier-pop stop"
    if failed port 110 then restart
    if 5 restarts within 5 cycles then timeout
 
# IMAP
check process imap with pidfile /var/run/courier/imapd.pid
    group mail
    start program = "/etc/init.d/courier-imap start"
    stop  program = "/etc/init.d/courier-imap stop"
    if failed port 143 then restart
    if 5 restarts within 5 cycles then timeout
 
# Disk
 
# SDA1
check device sda1 with path /dev/sda1
    group system
    if space usage > 85% then alert
    if space usage > 90% then exec "/root/script/cleanup.sh"
 
# SDA2
check device sda2 with path /dev/sda2
    group system
    if space usage > 85% then alert