![Writing a nagios plugin in python
● Plugin Output
– Output to be printed to STDOUT that tells if the service is
working or why it is failing.
– Try to keep the output short - probably less that 80
characters
– SERVICE STATUS: First line of output | performance
data
● Performance data: Nagios will consider the parts
following a "|" as the performance data
● Performance data format:
'label'=value[UOM];[warn];[crit];[min];[max]](https://image.slidesharecdn.com/nagiosmonitoringwithpythonplugin-150719143303-lva1-app6892/85/Nagios-monitoring-with_python_plugin-6-320.jpg)
Nagios monitoring with_python_plugin
- 1. Monitoring your system using Nagios and Python plugins By, Darshan N
- 2. Agenda ● Why monitoring? ● Introduction to nagios ● Architecture of nagios ● Writing a monitoring plugin in python ● Examples of plugin ● Demo
- 3. Why monitoring ? ● Monitoring a system is important as it helps you detect problems in the system before hand. ● You can take corrective measures to resolve the issues. ● It gives us idea of resource utilization in the system. ● Scale your system based on the utilization. ● Many monitoring softwares are avlilable.
- 4. Introduction to Nagios ● Nagios is open source monitoring software licensed under the GNU GPL V2. ● Nagios offers monitoring and alerting for servers, switches, applications, and services. ● Monitoring via remotely run scripts via Nagios Remote Plugin Executor ● A simple plugin design that allows users to easily develop their own service checks depending on needs, by using their tools of choice (shell scripts, Python, C++, Perl, Ruby, PHP, C#, etc.) ● Graphing with the help of pnp4nagios
- 6. Writing a nagios plugin in python ● Plugin Output – Output to be printed to STDOUT that tells if the service is working or why it is failing. – Try to keep the output short - probably less that 80 characters – SERVICE STATUS: First line of output | performance data ● Performance data: Nagios will consider the parts following a "|" as the performance data ● Performance data format: 'label'=value[UOM];[warn];[crit];[min];[max]
- 7. Writing a nagios plugin in python ● Nagios server detects the service status by the exit code of the plugin ● Nagios plugin possible Exit Codes Exit Code Status 0 OK 1 WARNING 2 CRITICAL 3 UNKNOWN
- 8. Writing a nagios plugin in python ● Plugin Options -V version (--version) -h help (--help) -t timeout (--timeout) -w warning threshold (--warning) -c critical threshold (--critical)
- 9. Example of plugin ● Writing a sample nagios plugin in python. ● Pluging our sample plugin to nagios monitoring system.
- 10. Demo ● Using python plugins to monitor glusterfs (a distributed file system)
- 11. Thank you