wheelcomplex/diskspace-notify

Running out of free space notificator.

Diskspace-notifier

Checks periodically for free disk space and alerts user via email when there is not enough free space (threshold set in config).

It does not aim to replace any large monitoring tools, it was an excercise to learn Go and maybe create something useful.

Goals

• Super simple and lightweight.
• Check free disk space each X seconds (configurable).
• When free disk space crosses threshold (configurable in %) send notification.
• Since checking uses Statfs, it should be async.
• Sending email should not be async, we could get in trouble - starting next cycle before the previous email was sent for example.
• It should keep timestamp of last email notification and keep it in mind in the next cycle (not to SPAM).
• It should either be able to log to a file or to stdout (for start managers).

Usage

# normal
./diskspace-notify -config="/path/to.conf"

# with logging
./diskspace-notify -config="/path/to.conf" -log="/path/to.log"

Note: It cannot daemonize itself, you should use some startup manager (init.d or supervisor).

If you want to see how the email looks like, you can set threshold value in your config to 100 to make the program send you an email.

Ideas are welcome!

Get the code

go get github.com/lunemec/diskspace-notify/diskspace-notify

or

git clone [email protected]:lunemec/diskspace-notify.git

Build

go build -o diskspace-notify src/*.go

License

Copyright (c) 2014, Lukas Nemec All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.