Real-world configuration examples
Here are 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. Please check and edit as needed, some IP-addresses and paths mentioned here may or will differ from your system.
- System Services
- Name Services
- AAA Services
- FTP Services
- Login Services
- WWW Services
- Mail Services
- Virus Scanner
- Printing Services
- Database Services
- File Services
- Sun ONE Services
- Misc Services
- Misc Usage
System Services
When used with Solaris the init.d script needs a modification. Add the following line after start of cron:
/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
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 --"?
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
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
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
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
AAA Services
FreeRADIUS (SVN only, not Monit 5.0)
check process radiusd with pidfile /var/named/chroot/var/run/radiusd/radiusd.pid
start program = "/etc/init.d/radiusd start"
stop program = "/etc/init.d/radiusd stop"
if failed host 127.0.0.1 port 1812 type udp protocol radius secret testing123 then alert
if failed host 127.0.0.1 port 1812 type udp protocol radius secret testing123 then alert
if 5 restarts within 5 cycles then timeout
FTP Services
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
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
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 localhost port 80
protocol HTTP request "/~hauk/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 http://localhost/~hauk/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
Each mongrel instance will need it's own entry, and make sure to change the port (8000 in this example) to reflect your mongrel_cluster.yml file.
check process mongrel8000
with pidfile /path/to/pidfile/mongrel.8000.pid
group mongrels
start program = "/bin/mongrel_rails cluster::start -C /path/to/mongrel_cluster.yml --clean --only 8000"
stop program = "/bin/mongrel_rails cluster::stop -C /path/to/mongrel_cluster.yml --clean --only 8000"
if failed port 8000 protocol HTTP
request /system/token
with timeout 10 seconds
then restart
if 5 restarts within 5 cycles
then timeout
Note: /system/token requests an empty file called token, as recommended in the apache section above.
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
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
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
check process nginx with pidfile /var/run/nginx.pid
start program = "/etc/init.d/nginx start"
stop program = "/etc/init.d/nginx stop"
group www-data (for ubuntu, debian)
Mail Services
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
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
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
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
check process dovecot with pidfile /var/run/dovecot/master.pid
start program = "/etc/init.d/dovecot start"
stop program = "/etc/init.d/dovecot stop"
group mail
if failed host mail.yourdomain.tld port 993 type tcpssl sslauto protocol imap for 5 cycles then restart
if 3 restarts within 5 cycles then timeout
depends dovecot_init
depends dovecot_bin
check file dovecot_init with path /etc/init.d/dovecot
group mail
check file dovecot_bin with path /usr/sbin/dovecot
group mail
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
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
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
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
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
Generally choosing either the socket or a TCP/IP connect is sufficient.
check process postgres with pidfile /var/postgres/postmaster.pid
group database
start program = "/etc/init.d/postgresql start"
stop program = "/etc/init.d/postgresql stop"
if failed unixsocket /var/run/postgresql/.s.PGSQL.5432 protocol pgsql
then restart
if failed host 192.168.1.1 port 5432 protocol pgsql then restart
if 5 restarts within 5 cycles then timeout
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
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
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
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
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
aMule (p2p program - daemon version)
check process aMule with pidfile /home/$USER/.aMule/muleLock
start program = "/etc/init.d/amule-daemon start"
stop program = "/etc/init.d/amule-daemon stop"
Subsonic (streaming app - daemon version)
check process streaming with pidfile /var/run/subsonic.pid
start program = "/etc/init.d/subsonic start"
stop program = "/etc/init.d/subsonic stop"
kissdx (Streaming app for some DVDs)
check process kissdx with pidfile /var/run/kissdx.pid
start program = "/etc/init.d/kissdx"
stop program = "/usr/bin/killall kissdx"
if 5 restarts within 5 cycles then timeout
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'"
Logrotate configuration for monit
/var/log/monit.log {
missingok
notifempty
size 100k
create 0644 root root
postrotate
/bin/kill -HUP `cat /var/run/monit.pid 2>/dev/null` 2> /dev/null || true
endscript
}
Getting top otput by mail on event
check file myfile with path /tmp/fo.bar
if changed timestamp then exec "/bin/ba
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