simple-monitor-alert 0.2.4

Description:

simplemonitoralert 0.2.4

Simple Monitor Alert
A simple monitor with alerts for Unix/Linux under the KISS philosophy. Keep It Simple, Stupid!

Light: Only ~7MiB of RAM. (That’s great for your raspberry pi!)
Very easy to use and understand.
Write your own monitors in any language (Bash, Python, Perl, JS, Ruby, PHP, C, C++…).
Awesome features: send alerts once or several times, graphic peak…
No server required. You can run as a daemon or using crond.
Easy to debug and test.
Multiple ways to send alerts: email, telegram…
Easy configuration in a single file.

Available monitors:

Hard disks: SMART, temperature, free space, Mdadm (linux RAID).
System: CPU usage, free RAM, free SWAP, monitorize services (daemons), sensors, [time]…
Web: load time, return code, content in page.
Network: ping, [port, dynamic ip].
Others: [Log monitor, google cloud print]


Screencast



3-Step Quick Start Guide

Install it from Pypi:
$ sudo pip install simple-monitor-alert

Edit /etc/simple-monitor-alert/sma.ini and defines the recipient of the alerts:
[mail]
to = [email protected]

Execute sma:
# Just once:
$ sma
# or... Run as a service (daemon)
$ sma service
# or... Run usign system service:
$ sudo systemctl start sma


And yes, that’s it!


5 minutes guide
Files and directories:


/etc/simple-monitor-alert/sma.ini (file): all-in-one config file. Configure monitors and alerts methods.
/etc/simple-monitor-alert/monitors-available (directory): All monitors available for usage. You can create monitors here.
/etc/simple-monitor-alert/monitors-enabled (directory): All monitors that are here are activated.
/etc/simple-monitor-alert/alerts (directory): Alerts methods available. You need to configure them in sma.ini.



Enable and disable monitors
All monitors in /etc/simple-monitor-alert/monitors-enabled are enabled. It is recommended that files are symbolic
links. To activate a monitor:
$ cd /etc/simple-monitor-alert/monitors-enabled
$ sudo ln -s ../monitors-available/mdadm.sh
To disable:
$ cd /etc/simple-monitor-alert/monitors-enabled
$ rm mdadm.sh # It's safe. mdadm is a symlink.
We recommend you read the beginning of the monitor before activating. Some monitors may require parameters and
configure the system. For example:
$ head -n 6 /etc/simple-monitor-alert/monitors-available/service.sh
#!/usr/bin/env bash
# Service Status monitor.
# Verify that the service is running.
# It requires a parameter: service name. For example, sshd.
# [service]
# service_status.param = sshd
To pass the parameter you must add the following to sma.ini:
[service]
service_status.param = sshd
To monitor multiple services:
[service]
service_status(sshd).param = sshd
service_status(ntpd).param = ntpd


Debugging
You can test your monitors running them:
$ /etc/simple-monitor-alert/monitors-available/mdadm.sh
mdadm(md0).name = 'Mdadm /dev/md0'
mdadm(md0).expected = 0
mdadm(md0).value = 0
You can also run sma and see the results:
$ sma
2016-05-03 00:28:14,972 - sma - INFO - Trigger: [success] (mdadm) mdadm(md0). Result: 0 == 0
2016-05-03 00:28:14,990 - sma - INFO - Trigger: [success] (system) ram. Result: 32.1427 <= 85
2016-05-03 00:28:14,990 - sma - INFO - Trigger: [success] (system) cpu. Result: 9.57627 <= 80
2016-05-03 00:28:15,156 - sma - WARNING - Trigger: [warning] (hdds) pcnt_use(sdc1). Assertion 98 <= 80 failed.
Extra info: Space: 23G/25G
2016-05-03 00:28:15,157 - sma - WARNING - Trigger: [warning] (hdds) pcnt_use(md0). Assertion 100 <= 80 failed.
Extra info: Space: 5,4T/5,5T
To test the alerts you can use:
$ sma alerts --test


My first monitor
SMA works by checking the output of your monitor script. A monitor has observables. Each observable has 2 major
sections: the expected value and the value obtained:
observable1.expected = yes
observable1.value = yes
observable2.expected = yes
observable2.value = no
In this example the first observable is fine and the second is under error. Your program should return something
similar. The following example check that a file exists:
#!/usr/bin/env bash
echo "file_exists.expected = yes"
if [ -f "/path/to/file" ]; then value="yes"; else value="no"; fi
echo "file_exists.value = $value"
Output:
$ /etc/simple-monitor-alert/monitors-available/example-1.sh
file_exists.expected = yes
file_exists.value = no
There are more options with monitors, such as obtaining arguments. For more information see the documentation.