====== Monit ======

  * [[Monit Examples]]
  * [[SocketLabs]]
  * [[dropbear]]

  * [[http://mmonit.com/monit/documentation/monit.html|Documentation]]

Monit is a systems software watchdog.  It will monitor services to make sure they are running, and take care of them if they get out of control.
==== Monitoring Modes ====

There are two ways for monit to operate: as active or passive.  Active tries to fix problems while passive only monitors them, but sends alerts when something happens.

==== Init ====

  * [[upstart]]

For Gentoo / CentOS, add monit to ''/etc/inittab'' and run ''telinit q'' to start the process and keep it respawning upon death.

<code>
# monit
mo:2345:respawn:/usr/bin/monit -Ic /etc/monit/monitrc
</code>

==== Ubuntu ====

For Ubuntu, create ''/etc/init/monit.conf''.  Check the location of the monit binary, it may be in ''/usr/sbin'' instead of ''/usr/bin''

<code>
start on runlevel [2345]
stop on runlevel [06]
exec /usr/bin/monit -Ic /etc/monit/monitrc
respawn
</code>

Add monit to the default runlevels:

<code>
update-rc.d monit defaults
service monit start
</code>

==== CentOS ====

Download and install the [[http://dev.digitaltrike.com/~steve/downloads/centos/init.d/monit|monit]] init.d script.  Make sure that the ''MONIT'' variable in the script points to the correct binary.

Add monit to startup:

<code>chkconfig --levels 235 monit on</code>

==== FreeBSD ====

  * [[FreeBSD]]

  * [[http://beandog.digitaltrike.com/monit/freebsd/|monit samples]]

Add monit to startup:

<code>
echo monit_enable=YES >> /etc/rc.conf
/usr/local/etc/rc.d/monit start
</code>

== Todo ==

  * Find out how to run monit all the time.  See ''man 5 ttys'' for possible reference.

==== NetBSD ====

  * [[NetBSD]]

<code>

The following files should be created for monit-4.10.1nb2:

        /etc/rc.d/monit (m=0755)
            [/usr/pkg/share/examples/rc.d/monit]
</code>

==== Outgoing Email ====

Monit can be configured to use SocketLabs SMTP relay server to send outgoing email.  SocketLabs only supports SSLv3 or no authentication:

<code>
set mailserver smtp.socketlabs.com username <username> password <password>
set mailserver smtp.socketlabs.com port 587 username <username> password <password> using SSLV3
</code>