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CNTO service monitoring scripts

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CNTO Incident Detection

This repo contains the scripts used by Carpe Noctem Tactical Operations to monitor the status of its online services.

Every script is compliant to the Nagios Plugins standards in order to be attached to a Nagios based monitoring system.

Requirements

  • Python 3.5

Installation

It is recommended to install the package under a virtual environment (for example virtualenv).

Installation is possible via pip: clone or download the repository, open a terminal window and change location to the project main folder then run pip install .

Usage

The cnto-check-runner script executes a program which must abide to Nagios Plugins guidelines (see http://nagios-plugins.org/doc/guidelines.html) and updates a single component on a configured instance of Cachet to reflect the status detected by the script. If the status detected is WARNING or CRITICAL the runner will execute the monitoring program again for a maximum number of times given as argument and waiting a given amount of time between each attempt. Cachet will be updated only if the status remains either WARNING or CRITICAL after all the retries. A final status of CRITICAL will trigger a status of Major Outage on Cachet. A final status of WARNING will trigger a status of Partial Outage on Cachet. As soon as OK status is detected (within the maximum number of retries) a Operational status is forwarded to Cachet. Having custom mappings between Nagios exit codes and Cachet statuses will be possible in the future. If the detected status is UNKNOWN Cachet will not be updated. This script is itself compatible with Nagios Plugins standards and will return a OK status if Cachet has been updated (no information on the update is provided though), a CRITICAL status if the executed program returned an incompatible exit code and a UNKNOWN status if the service status is uncertain. Note: if this script is used as Nagios Plugin then the debug option must be disabled.

Available monitoring scripts

The following scripts are provided to monitor CNTO's services and can be used with cnto-check-runner:

  • cnto-http-monitor: checks a resource availability over HTTP/HTTPS. By default the resource is considered to be in a OK status if the HTTP status code is 200 and in CRITICAL status otherwise, different behaviours may be specified using optional arguments.
  • cnto-ts3-monitor: checks a TeamSpeak 3 Server availability. If the server responds to a connection requests on the client port a OK status is triggered, if the response exceeds the timeout a CRITICAL status is triggered, if the provided hostname/address is invalid a UNKNOWN status is triggered.
  • cnto-arma3-monitor: checks an Arma3 Server availability using A2S server queries. If the server responds a OK status is triggered, if the response exceeds the timeout a CRITICAL status is triggered, if either one of the provided hostname/address and port is invalid a UNKNOWN status is triggered.

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