## Real-world configuration examples

Here's some real-world configuration examples for monit. It can be helpful to look at the examples given here to see how a service is running, where it put its pidfile, how to call the start and stop methods for a service, etc.

You are welcome to cut & paste configuration into your own `monitrc` control file. NB! please check and edit as needed, some ip-addresses and paths mentioned here may or will differ from your system.

You may also want to checkout Christian Hopp's configuration example. He demonstrate how you can setup a clean and structured configuration utilizing the monit include statement (which he was responsible for). Each check for a particular service is written in it's own file and included in the top-level monit control file. Many of the service files are also well worth studying in their own rights. Although this example is for a Linux Debian distribution it is general enough to be of interest for any platform.

- System Services
  - Cron (program timer)
  - Gdm (gnome desktop manager)
  - Inetd (internet service manager)
  - Syslogd (system logfile daemon)
  - Xfs (X font server)
  - YPBind (Yellow page bind daemon)
  - Net-SNMP (SNMP agent)
  - NTP (time server)
  - Nscd (name service caching daemon)
- Name Services
  - Bind (chrooted)
- FTP Services
  - Proftpd
- Login Services
  - SSHD
- WWW Services
  - Apache (web server)
  - Zope (appication server)
  - Squid (http/ftp proxy)
  - Privoxy (spamfilter proxy)
- Mail Services
  - Postfix (mail server)
  - Exim (mail server)
  - sendmail (mail server)
  - Qpopper (pop3 server)
  - Spamassassin daemon (spam scan daemon)
  - Amavis-new (mail virus scanner)
  - Policyd (Postfix access policy delegation daemon)
- Virus Scanner
  - Sophie (virus scan daemon)
  - Trophie (virus scan daemon)
  - Clamavd (virus scan daemon)
- Printing Services
  - LPRng (printer daemon)
- Database Services
  - MySQL Server
  - OpenLDAP Server
- File Services
  - Samba (windows file/domain server)
- Sun ONE Services
  - iPlanetDirectoryServer (Sun ONE)
  - iPlanetMessagingServer processes (Sun ONE)
  - iPlanetCalendarServer processes (Sun ONE)
- Misc Services
  - apcupsd (APC ups daemon)
  - Webmin (remote admin service)
  - STunnel (SSL tunnel)
- Misc Usage
  - Watch and analyze crashdumps (Solaris)
  - Watch and analyze crashdumps (Linux)
  - Start and stop tcpdump based on condition
  - Rotate tcpdump until condition occures
  - MySQL event driven process list

## System Services

### Cron (program timer)

When used with Solaris the init.d script needs a modification. Add the following line after start of cron according to the Monit FAQ:

             /usr/bin/pgrep -x -u 0 -P 1 cron > /var/run/cron.pid

     check process cron with pidfile /var/run/cron.pid
       group system
       start program = "/etc/init.d/cron start"
       stop  program = "/etc/init.d/cron stop"
       if 5 restarts within 5 cycles then timeout
       depends on cron_rc

     check file cron_rc with path /etc/init.d/cron
       group system
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

### Gdm (gnome desktop manager)

     check process gdm with pidfile /var/run/gdm.pid
       start program = "/etc/init.d/gdm start"
       stop program = "/etc/init.d/gdm stop"
       if 5 restarts within 5 cycles then timeout

### Inetd (internet service manager)

     check process inetd with pidfile /var/run/inetd.pid
       start program = "/etc/init.d/inetd start"
       stop program = "/etc/init.d/inetd stop"
       if failed host 192.168.1.1 port 25 protocol smtp then restart  # e.g. exim
       if failed host 192.168.1.1 port 515 then restart               # e.g. cups-lpd
       if failed host 192.168.1.1 port 113 then restart               # e.g. ident
       if 5 restarts within 5 cycles then timeout

### Syslogd (system logfile daemon)

     check process syslogd with pidfile /var/run/syslogd.pid
       start program = "/etc/init.d/sysklogd start"
       stop program = "/etc/init.d/sysklogd stop"
       if 5 restarts within 5 cycles then timeout

     check file syslogd_file with path /var/log/syslog
       if timestamp > 65 minutes then alert # Have you seen "-- MARK --"?

### Xfs (X font server)

     check process xfs with pidfile /var/run/xfs.pid
       start program = "/etc/init.d/xfs start"
       stop program = "/etc/init.d/xfs stop"
       if 5 restarts within 5 cycles then timeout

### YPBind (Yellow page bind daemon)

     check process ypbind with pidfile /var/run/ypbind.pid
       start program = "/etc/init.d/nis start"
       stop program = "/etc/init.d/nis stop"
       if 5 restarts within 5 cycles then timeout

### Net-SNMP (SNMP agent)

     check process snmpd with pidfile /var/run/snmpd
       start program = "/etc/init.d/snmpd start"
       stop program = "/etc/init.d/snmpd stop"
       if failed host 192.168.1.1 port 161 type udp then restart
       if failed host 192.168.1.1 port 199 type tcp then restart
       if 5 restarts within 5 cycles then timeout

### NTP (time server)

     check process ntpd with pidfile /var/run/ntpd.pid
       start program = "/etc/init.d/ntpd start"
       stop  program = "/etc/init.d/ntpd stop"
       if failed host 127.0.0.1 port 123 type udp then alert
       if 5 restarts within 5 cycles then timeout

### Nscd (name service caching daemon)

     check process nscd with pidfile /var/run/nscd/nscd.pid
       start program = "/etc/init.d/nscd start"
       stop  program = "/etc/init.d/nscd stop"
       if 5 restarts within 5 cycles then timeout

## Name Services

### Bind (chrooted)

     check process named with pidfile /var/named/chroot/var/run/named/named.pid
       start program = "/etc/init.d/named start"
       stop program = "/etc/init.d/named stop"
       if failed host 127.0.0.1 port 53 type tcp protocol dns then alert
       if failed host 127.0.0.1 port 53 type udp protocol dns then alert
       if 5 restarts within 5 cycles then timeout

## FTP Services

### Proftpd

     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

## Login Services

### SSHD

     check process sshd with pidfile /var/run/sshd.pid
       start program  "/etc/init.d/sshd start"
       stop program  "/etc/init.d/sshd stop"
       if failed port 22 protocol ssh then restart
       if 5 restarts within 5 cycles then timeout

## WWW Services

### Apache (web server)

Hint: It is recommended to use a "token" file (an empty file) for monit to request. That way, it is easy to filter out all the requests made by monit in the httpd access log file. Here's a trick shared by Marco Ermini, place the following in httpd.conf to stop apache from loggin any requests done by monit:

      SetEnvIf        Request_URI "^\/monit\/token$" dontlog
      CustomLog       logs/access.log common env=!dontlog

In some cases init scripts for apache and apache-ssl are separated, e.g. Debian Linux.

     check process apache with pidfile /opt/apache_misc/logs/httpd.pid
       group www
       start program = "/etc/init.d/apache start"
       stop  program = "/etc/init.d/apache stop"
       if failed host 192.168.1.1 port 80
            protocol HTTP request /monit/token then restart
       if failed host 192.168.1.1 port 443 type TCPSSL
            certmd5 12-34-56-78-90-AB-CD-EF-12-34-56-78-90-AB-CD-EF
    	protocol HTTP request /monit/token  then restart
       if 5 restarts within 5 cycles then timeout
       depends on apache_bin
       depends on apache_rc

     check file apache_bin with path /opt/apache/bin/httpd
       group www
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file apache_rc with path /etc/init.d/apache
       group www
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

### Zope (application server)

     check process zope with pidfile /opt/Zope/var/zProcessManager.pid
       start program = "/etc/init.d/zope start"
       stop  program = "/etc/init.d/zope stop"
       group www
       if failed host 192.168.1.1 port 8080 protocol HTTP then restart
       if 5 restarts within 5 cycles then timeout
       every 5

### Squid (http/ftp proxy)

     check process squid with pidfile /opt/squid/logs/squid.pid
       group www
       start program = "/etc/init.d/squid start"
       stop  program = "/etc/init.d/squid stop"
       if failed host 192.168.1.1 port 3128  then restart
       if 5 restarts within 5 cycles then timeout
       depends on squid_bin
       depends on squid_rc

     check file squid_bin with path /opt/squid/bin/squid
       group www
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file squid_rc with path /etc/init.d/squid
       group www
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

### Privoxy (spamfilter proxy)

     check process privoxy with pidfile /opt/privoxy/var/privoxy.pid
       group www
       start program = "/etc/init.d/privoxy start"
       stop  program = "/etc/init.d/privoxy stop"
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.1 port 8118  then restart
       depends on privoxy_bin
       depends on privoxy_rc

     check file privoxy_bin with path /opt/privoxy/sbin/privoxy
       group www
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file privoxy_rc with path /etc/init.d/privoxy
       group www
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

## Mail Services

### Postfix (mail server)

     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
       depends on postfix_rc

     check file postfix_rc with path /etc/init.d/postfix
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

### Exim (mail server)

###

###

###

###

###

##

###

##

###

###

###

##

###

###

##

###

##

###

##

###

###

###

###

###

###

###

###

###

###

###

###

###

###

##

###

###

###

##

###

###

###

###

###

     check process exim with pidfile /var/run/exim.pid
       group mail
       start program = "/etc/init.d/exim start"
       stop  program = "/etc/init.d/exim stop"
       if failed port 25 protocol smtp then restart
       if 5 restarts within 5 cycles then timeout
       depends on exim_bin
       depends on exim_rc

     check file exim_bin with path /usr/sbin/exim
       group mail
       if failed checksum then unmonitor
       if failed permission 4755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file exim_rc with path /etc/init.d/exim
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Sendmail (mail server)

     check process sendmail with pidfile /var/run/sendmail.pid
       group mail
       start program = "/etc/init.d/sendmail start"
       stop  program = "/etc/init.d/sendmail stop"
       if failed port 25 protocol smtp then restart
       if 5 restarts within 5 cycles then timeout
       depends on sendmail_bin
       depends on sendmail_rc

     check file sendmail_bin with path /usr/lib/sendmail
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file sendmail_rc with path /etc/init.d/sendmail
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Qpopper (pop3 server)

     check process qpopper with pidfile /var/run/popper.pid
       group mail
       start program = "/etc/init.d/qpopper start"
       stop  program = "/etc/init.d/qpopper stop"
       if 5 restarts within 5 cycles then timeout
       if failed port 110 type TCP protocol POP then restart
       depends on qpopper_bin
       depends on qpopper_rc

     check file qpopper_bin with path /opt/sbin/popper
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file qpopper_rc with path /etc/init.d/qpopper
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Spamassassin daemon (spam scan daemon)

     check process spamd with pidfile /var/run/spamd.pid
       group mail
       start program = "/etc/init.d/spamd start"
       stop  program = "/etc/init.d/spamd stop"
       if 5 restarts within 5 cycles then timeout
       if cpu usage > 99% for 5 cycles then alert
       if mem usage > 99% for 5 cycles then alert
       depends on spamd_bin
       depends on spamd_rc

     check file spamd_bin with path /usr/local/bin/spamd
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file spamd_rc with path /etc/init.d/spamd
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Amavis-new (mail virus scanner)

     check process amavisd with pidfile /opt/virus/amavis-new/var/run/amavisd.pid
       group mail
       start program = "/etc/init.d/amavis-new start"
       stop  program = "/etc/init.d/amavis-new stop"
       if failed port 10024 protocol smtp then restart
       if 5 restarts within 5 cycles then timeout
       depends on amavisd_bin
       depends on amavisd_rc

     check file amavisd_bin with path /opt/virus/amavis-new/bin/amavisd
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file amavisd_rc with path /etc/init.d/amavis-new
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Policyd (Postfix policy delegation daemon)

     check process policyd with pidfile /var/run/policyd.pid
       group mail
       start program = "/etc/init.d/policyd start"
       stop  program = "/etc/init.d/policyd stop"
       if failed port 10031 protocol postfix-policy then restart
       if 5 restarts within 5 cycles then timeout
       depends on policyd_bin
       depends on policyd_rc
       depends on cleanup_bin

     check file policyd_bin with path /usr/local/policyd/policyd
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file policyd_rc with path /etc/init.d/policyd
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file cleanup_bin with path /usr/local/policyd/cleanup
       group mail
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Virus Scanner
    Sophie (virus scan daemon)

     check process sophie with pidfile /var/run/sophie.pid
       group virus
       start program = "/etc/init.d/sophie start"
       stop  program = "/etc/init.d/sophie stop"
       if failed unixsocket /var/run/sophie then restart
       if 5 restarts within 5 cycles then timeout
    Virus Scanner
    Sophie (virus scan daemon)

     check process sophie with pidfile /var/run/sophie.pid
       group virus
       start program = "/etc/init.d/sophie start"
       stop  program = "/etc/init.d/sophie stop"
       if failed unixsocket /var/run/sophie then restart
       if 5 restarts within 5 cycles then timeout
       depends on sophie_bin
       depends on sophie_rc

     check file sophie_bin with path /opt/virus/sophie/sophie
       group virus
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file sophie_rc with path /etc/init.d/sophie
       group virus
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Trophie (virus scan daemon)

     check process trophie with pidfile /var/run/trophie.pid
       group virus
       start program = "/etc/init.d/trophie start"
       stop  program = "/etc/init.d/trophie stop"
       if failed unixsocket /var/run/trophie then restart
       if 5 restarts within 5 cycles then timeout
       depends on trophie_bin
       depends on trophie_rc

     check file trophie_bin with path /opt/virus/trophie/trophie
       group virus
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file trophie_rc with path /etc/init.d/trophie
       group virus
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Clamav (virus scan daemon)

     check process clamavd with pidfile /var/run/clamd.pid
       group virus
       start program = "/etc/init.d/clamavd start"
       stop  program = "/etc/init.d/clamavd stop"
       if failed unixsocket /var/run/clamd then restart
       if 5 restarts within 5 cycles then timeout
       depends on clamavd_bin
       depends on clamavd_rc

     check file clamavd_bin with path /opt/virus/clamavd/clamavd
       group virus
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file clamavd_rc with path /etc/init.d/clamavd
       group virus
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Database Services
    MySQL Server

      The name of the pidfile consists usually of the fully
      quallified domainname and pidfile as extension.

    check process mysql with pidfile /opt/mysql/data/myserver.mydomain.pid
       group database
       start program = "/etc/init.d/mysql start"
       stop program = "/etc/init.d/mysql stop"
       if failed host 192.168.1.1 port 3306 protocol mysql then restart
       if 5 restarts within 5 cycles then timeout
       depends on mysql_bin
       depends on mysql_rc

     check file mysql_bin with path /opt/mysql/bin/mysqld
       group database
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file mysql_rc with path /etc/init.d/mysql
       group database
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    OpenLDAP slapd (Debian package)

    check process slapd with pidfile /var/run/slapd.pid
       group database
       start program = "/etc/init.d/slapd start"
       stop program = "/etc/init.d/slapd stop"
       if failed host 192.168.1.1 port 389 protocol ldap3 then restart
       if 5 restarts within 5 cycles then timeout
       depends on slapd_bin
       depends on slapd_rc

     check file slapd_bin with path /usr/sbin/slapd
       group database
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file slapd_rc with path /etc/init.d/slapd
       group database
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    File Services
    Samba (windows file/domain server)

       Hint: For enhanced controllability of the service it is
       handy to split up the samba init file into two pieces, one for smbd
       (the file service) and one for nmbd (the name service).

     check process smbd with pidfile /opt/samba2.2/var/locks/smbd.pid
       group samba
       start program = "/etc/init.d/smbd start"
       stop  program = "/etc/init.d/smbd stop"
       if failed host 192.168.1.1 port 139 type TCP  then restart
       if 5 restarts within 5 cycles then timeout
       depends on smbd_bin

     check file smbd_bin with path /opt/samba2.2/sbin/smbd
       group samba
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check process nmbd with pidfile /opt/samba2.2/var/locks/nmbd.pid
       group samba
       start program = "/etc/init.d/nmbd start"
       stop  program = "/etc/init.d/nmbd stop"
       if failed host 192.168.1.1 port 138 type UDP  then restart
       if failed host 192.168.1.1 port 137 type UDP  then restart
       if 5 restarts within 5 cycles then timeout
       depends on nmbd_bin

     check file nmbd_bin with path /opt/samba2.2/sbin/nmbd
       group samba
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Printing  Services
    LPRng (printer daemon)

     check process lprng with pidfile /var/run/lpd.515
       group printer
       start program = "/etc/init.d/lprng start"
       stop  program = "/etc/init.d/lprng stop"
       if failed host 192.168.1.1 port 515 type TCP  then restart
       if 5 restarts within 5 cycles then timeout
       depends on lprng_bin
       depends on lprng_rc

     check file lprng_bin with path /opt/lprng/sbin/lpd
       group printer
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file lprng_rc with path /etc/init.d/lprng
       group printer
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Sun ONE Services
    iPlanetDirectoryServer slapd

     check process ldap-master
      with pidfile /usr/iplanet/ldapmaster/slapd-master-1/logs/pid
       start program  "/usr/iplanet/ldapmaster/slapd-master-1/start-slapd"
       stop program  "/usr/iplanet/ldapmaster/slapd-master-1/stop-slapd"
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.1 port 389 protocol ldap3 then restart

    iPlanetMessagingServer MTA dispatcher

     check process mta-dispatcher
      with pidfile /usr/iplanet/msg-ims-1/config/pidfile.imta_dispatch
       start program  "/usr/iplanet/msg-ims-1/imsimta start dispatcher"
       stop program  "/usr/iplanet/msg-ims-1/imsimta stop dispatcher"
       group messaging
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.1 port 25 protocol smtp then restart

     iPlanetMessagingServer MTA job controler

     check process mta-job_controller
      with pidfile /usr/iplanet/msg-ims-1/config/pidfile.imta_jbc
       start program  "/usr/iplanet/msg-ims-1/imsimta start job_controller"
       stop program  "/usr/iplanet/msg-ims-1/imsimta stop job_controller"
       group messaging
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.1 port 28442 then restart

     iPlanetMessagingServer stored

     check process store with pidfile /usr/iplanet/msg-ims-1/config/pidfile.store
       start program  "/usr/iplanet/msg-ims-1/start-msg store"
       stop program  "/usr/iplanet/msg-ims-1/stop-msg store"
       if 5 restarts within 5 cycles then timeout
       group messaging

     check file stored.ckp with path /usr/iplanet/msg-ims-1/config/stored.ckp
       if timestamp > 10 minutes then alert
       group messaging

     check file stored.lcu with path /usr/iplanet/msg-ims-1/config/stored.lcu
       if timestamp > 15 minutes then alert
       group messaging

     check file stored.per with path /usr/iplanet/msg-ims-1/config/stored.per
       if timestamp > 70 minutes then alert
       group messaging

     iPlanetMessagingServer mshttpd

     check process webmail with pidfile /usr/iplanet/msg-ims-1/config/pidfile.http
       start program  "/usr/iplanet/msg-ims-1/start-msg http"
       stop program  "/usr/iplanet/msg-ims-1/stop-msg http"
       group messaging
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.1 port 80 protocol http then restart

     iPlanetMessagingServer popd

     check process pop3 with pidfile /usr/iplanet/msg-ims-1/config/pidfile.pop
       start program  "/usr/iplanet/msg-ims-1/start-msg pop"
       stop program  "/usr/iplanet/msg-ims-1/stop-msg pop"
       group messaging
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.1 port 110 protocol pop then restart

     iPlanetMessagingServer imapd

     check process imap4 with pidfile /usr/iplanet/msg-ims-1/config/pidfile.imap
       start program  "/usr/iplanet/msg-ims-1/start-msg imap"
       stop program  "/usr/iplanet/msg-ims-1/stop-msg imap"
       group messaging
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.1 port 143 protocol imap then restart

     iPlanetMessagingServer madmand (SNMP subagent)

     check process snmp-subagent with pidfile /usr/iplanet/msg-ims-1/config/pidfile.snmp
       start program  "/usr/iplanet/msg-ims-1/start-msg snmp"
       stop program  "/usr/iplanet/msg-ims-1/stop-msg snmp"
       group messaging
       if 5 restarts within 5 cycles then timeout

     iPlanetMessagingServer MMP (POP3/IMAP4/SMTP proxy)

     check process mmp with pidfile /usr/iplanet/mmp-ims2/pidfile
       start program  "/usr/iplanet/mmp-ims2/AService.rc start"
       stop program  "/usr/iplanet/mmp-ims2/AService.rc stop"
       group messaging
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.2 port 110 protocol pop then restart
       if failed host 192.168.1.2 port 143 protocol imap then restart

    iPlanetCalendarServer csadmind

     check process calendar-admin with pidfile /usr/iplanet/SUNWics5/cal/bin/config/pidfile.admin
       start program  "/usr/iplanet/SUNWics5/cal/bin/csstart service admin"
       stop program  "/usr/iplanet/SUNWics5/cal/bin/csstop service admin"
       group calendar
       if 5 restarts within 5 cycles then timeout

     iPlanetCalendarServer cshttpd

     check process calendar-http with pidfile /usr/iplanet/SUNWics5/cal/bin/config/pidfile.http
       start program  "/usr/iplanet/SUNWics5/cal/bin/csstart service http"
       stop program  "/usr/iplanet/SUNWics5/cal/bin/csstop service http"
       group calendar
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.3 port 80 protocol http then restart

     iPlanetCalendarServer csdwpd (database wire protocol)

     check process calendar-dwp with pidfile /usr/iplanet/SUNWics5/cal/bin/config/pidfile.dwp
       start program  "/usr/iplanet/SUNWics5/cal/bin/csstart service dwp"
       stop program  "/usr/iplanet/SUNWics5/cal/bin/csstop service dwp"
       group calendar
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.3 port 9779 protocol dwp then restart
       if cpu usage > 2% for 5 cycles then restart   # There's a leak in csdwpd

     iPlanetCalendarServer csnotifyd

     check process calendar-notify with pidfile /usr/iplanet/SUNWics5/cal/bin/config/pidfile.notify
       start program  "/usr/iplanet/SUNWics5/cal/bin/csstart service notify"
       stop program  "/usr/iplanet/SUNWics5/cal/bin/csstop service notify"
       group calendar
       if 5 restarts within 5 cycles then timeout

     iPlanetCalendarServer enpd (event notification service broker)

     check process calendar-ens with pidfile /usr/iplanet/SUNWics5/cal/bin/config/pidfile.ens
       start program  "/usr/iplanet/SUNWics5/cal/bin/csstart service ens"
       stop program  "/usr/iplanet/SUNWics5/cal/bin/csstop service ens"
       group calendar
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.3 port 7997 then restart

    Misc Services
    Apcupsd (APC ups daemon)

     check process apcupsd with pidfile /var/run/apcupsd.pid
       group ups
       start program = "/etc/init.d/apcupsd start"
       stop  program = "/etc/init.d/apcupsd stop"
       if 5 restarts within 5 cycles then timeout
       if failed host 192.168.1.3 port 7000 type TCP  then restart
       depends on apcupsd_bin
       depends on apcupsd_rc

     check file apcupsd_bin with path /opt/apcupsd/sbin/apcupsd
       group ups
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file apcupsd_rc with path /etc/init.d/apcupsd
       group ups
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Webmin (remote admin service)

     check process webmin with pidfile /var/webmin/miniserv.pid
       group webmin
       start program = "/etc/init.d/webmin start"
       stop  program = "/etc/init.d/webmin stop"
       if failed host 192.168.1.3 port 10000 then restart
       if 5 restarts within 5 cycles then timeout

     check file webmin_rc with path /etc/init.d/webmin
       group webmin
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    STunnel (SSL tunnel)

     check process stunnel_pop3 with pidfile /opt/var/stunnel/stunnel.110.pid
       start program = "/etc/init.d/stunnel start_pop3"
       stop  program = "/etc/init.d/stunnel stop_pop3"
       if failed host 192.168.1.1 port 143 type TCPSSL protocol POP then restart
       group stunnel
       depends stunnel_init
       depends stunnel_bin

     check process stunnel_swat with pidfile /opt/var/stunnel/stunnel.901.pid
       start program = "/etc/init.d/stunnel start_swat"
       stop  program = "/etc/init.d/stunnel stop_swat"
       if failed host 192.168.1.1 port 995 type TCPSSL then restart
       group stunnel
       depends stunnel_bin
       depends stunnel_rc

     check file stunnel_bin with path /opt/sbin/stunnel
       group stunnel
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

     check file stunnel_rc with path /etc/init.d/stunnel
       group stunnel
       if failed checksum then unmonitor
       if failed permission 755 then unmonitor
       if failed uid root then unmonitor
       if failed gid root then unmonitor

    Misc Usage
    Watch and analyze httpd crashdumps (Solaris)
    Setuid coredump allowed:

    coreadm -e proc-setid

    Monit set to watch the core timestamp change and send the backtrace:

     check file httpd_core with path /usr/apache/core
       if changed timestamp
          then exec "/bin/bash -c '/usr/bin/pstack /usr/apache/core | mailx -s httpd_crash foo@bar'"

    Watch and analyze httpd crashdumps (Linux)
    Central coredump prepared:

     mkdir -p /var/crash/core
     chmod 1777 /var/crash/core
     sysctl -w kernel.core_pattern = /var/crash/core/core.%e.%t.%p
     sysctl -w kernel.core_setuid_ok = 0
     sysctl -w kernel.core_uses_pid = 1
     echo -e "bt\nquit" > /etc/gdb.batch
     echo "ulimit -c unlimited" >> /etc/sysconfig/httpd
     echo "CoreDumpDirectory /var/crash/core" > /etc/httpd/conf.d/core.conf

    Crontab based core aging:

     10 1 * * * /usr/bin/find /var/crash/core/ -type f -mtime +1 -exec rm -f {} \;

    Monit set to watch the directory timestamp change and send last core backtrace:

     check directory httpd_core with path /var/crash/core
       if changed timestamp then exec "/bin/bash -c 'if [ `/bin/cat /tmp/monit_httpd_core.tmp | head -1` != `/bin/ls /var/crash/core/core.httpd* | tail -1` ]; then /usr/bin/gdb -x /etc/gdb.batch /usr/sbin/httpd `/bin/ls /var/crash/core/core.httpd* | tail -1 | tee /tmp/monit_httpd_core.tmp` | mail -s httpd_crash admin@foo.bar webmaster@foo.bar; fi'"

    Start and stop tcpdump based on condition
    As soon as the remote SMTP service of host bar is not available tcpdump is started.
    When the connection is available again, tcpdump is stopped. Only first
    ocurrence is catched (noexec flag is created to prevent another outage monitoring).

     check host bar with address 10.1.1.2
       if failed port 25 protocol smtp then exec "/bin/bash -c 'if [ ! -f /tmp/noexec ]; then touch /tmp/noexec; tcpdump -w /tmp/foo_bar.dump host bar; fi'" else if recovered then exec "killall tcpdump"

    Rotate tcpdump until condition occures
    This allows to let tcpdump write the data to file and rotate it to keep the size of
    the dump small until network problem occures (we don't need to flood the filesystem
    with data which are ok). As soon as the problem occures, monit sets noexec flag
    => the dump contains the data which preceded the problem as well.

    Script for tcpdump and rotation created (/tmp/dumprotate):

     #!/bin/bash
     killall tcpdump
     if [ ! -f /tmp/noexec ]
     then
       tcpdump -w /tmp/foo_bar.dump host bar
     fi

    The script is started from cron each 30 minutes:

     0,30 * * * * /tmp/dumprotate

    Monit watches the host availablity and as soon as it failed, sets noexec flag
    (with 5 minutes extent):

     check host bar with address 10.1.1.2
       if failed port 25 protocol smtp then exec "/bin/bash -c 'sleep 300; touch /tmp/noexec'"

    MySQL event driven process list
    This allows to obtain process list of mysql threads as soon as mysql
    refuses connections. For example we needed to know why mysql
    returned "Too many connections" to clients occasionaly. (note that
    for simplicity in this example is showed mysql root account without
    password - you realy should use restricted account ;)

     check process mysqld with pidfile /var/run/mysqld.pid
       if failed port 3306 protocol mysql then exec "/bin/bash -c '(date && /usr/bin/mysqladmin -u root processlist && echo) >> /tmp/mysql_processlist'"