85 lines
2.7 KiB
Plaintext
85 lines
2.7 KiB
Plaintext
Monit for Debian
|
|
================
|
|
|
|
Contribution
|
|
------------
|
|
|
|
Monit upstream uses Canonical-like CLA, that permit them to relicense a
|
|
contribution under a proprietary license and do proprietary derivative works.
|
|
That makes the current GPL license of the project to be a farce.
|
|
|
|
Please consider contribiting patches to the Debian's monit package instead
|
|
under any DFSG-compatible license.
|
|
|
|
Configuration
|
|
-------------
|
|
|
|
Hope you'll like monit configuration snippets found in
|
|
/etc/monit/conf-available/. Generally we try to provide them
|
|
working out-of-box but it's not always feasible.
|
|
|
|
These are supposed to be reviewed accordingly to site configuration
|
|
and policy including own file permissions (defaults to 0644, configuration
|
|
snippets *are* readable by anyone), IP addresses, host names, exact limit
|
|
values, etc. Then you could enable some snippets by symlinking them
|
|
to the /etc/monit/conf-enabled/ directory.
|
|
|
|
Please do post bugs against monit package when you have to change any
|
|
snippet in the way that should be current default (e.g. a binary path
|
|
has changed in the package).
|
|
|
|
Packagers may drop the default monit config file to:
|
|
/etc/monit/conf-available/<package>
|
|
and alternative/optional snippets to:
|
|
/etc/monit/conf-available/<package>-<somename>
|
|
|
|
|
|
Monitoring of deb packages
|
|
--------------------------
|
|
|
|
If you monitor debian packages, you should consider adding the
|
|
following snippet to your /etc/apt/apt.conf.d/50monit configuration to
|
|
stop monit during a apt upgrade and start it again once apt
|
|
finishes. This avoid spurious monit restarts/alerts of services that
|
|
are stopped/started as part of their debian package postinst.
|
|
|
|
--8<--
|
|
DPkg::Pre-Invoke { "[ -x /usr/bin/monit ] && /etc/init.d/monit stop" };
|
|
DPkg::Post-Invoke { "[ -x /usr/bin/monit ] && /etc/init.d/monit start" };
|
|
--8<--
|
|
|
|
See also man 5 apt.conf.
|
|
|
|
|
|
Startup delay
|
|
-------------
|
|
|
|
For some slow-to-start processes monit can, especially at bootup,
|
|
start to monitor a process before it is fully initialised. This can
|
|
cause monit to erroneously attempt a restart.
|
|
|
|
To avoid this, you should set the "start delay" option in monitrc. A
|
|
typical example looks like this:
|
|
|
|
--8<--
|
|
set daemon 120
|
|
with start delay 240
|
|
--8<--
|
|
|
|
|
|
Using with Systemd
|
|
------------------
|
|
|
|
In principle, you can use this piece of ... code with Monit. But using
|
|
sysvinit is recommended. Keep in mind that the default systemd's
|
|
configuration of many packages in the Debian will conflict with the Monit.
|
|
For example, the ssh.service uses the Restart directive like this:
|
|
|
|
--8<--
|
|
Restart=on-failure
|
|
--8<--
|
|
|
|
This configuration will break any proactive actions from
|
|
the Monit (see example configuration snippet for openssh-server in
|
|
/etc/monit/conf-available/openssh-server).
|