Scripts and executables must do two things at a minimum in order to function as nagios plugins. Download the latest nagios core plugins package 50 plugins. Nov 21, 20 a custom script can actually be extremely short. Jun 28, 2019 the debate between zabbix vs nagios is a topic that comes up quite often between it professionals, and the subject is valid. Any script called by a nagios command must subscribe to a precise contract. Here we have written a shell script that do not aims to automate the task of a typical system admin, but it may be. Once the execution is completed, it will copy the i file to the installed folder. So those are the standard checks nagios provides for freebsd and while they are helpful, they are seriously lacking when monitoring a pfsense and firewall specific functionality. The following video will walk you step by step through how to get nagios xi up and running in your web browser. See some of the awesome features present in the web gui and api, available on any operating system. To run a script on a remote client, you will need to set up the nagios remote plugin executor nrpe as this tutorial is based on debian 9, i will show as an example how to install it, but you can find instructions for any distribution.
If you agree, it is only fair we put our own nagios plugin scripts in the same directory as other nagios plugin scripts are. This step will be the same with your own plugins, and if you download a thirdparty plugin from the internet as well. Let us help you deploy nagios xi with a remoteassist or quickstart thats designed to save you time and get you off on the right foot. In addition to the builtin checks, it is possible to create custom agent checks using the user parameter feature moreover, a powerful feature of a zabbix agent is the ability to execute custom scripts. Download the fully functional 30day free trial, and try it yourself. Monitoring pfsense with nagios using ssh part 2 linux.
Contribute to obfuscuritynagios scripts development by creating an account on github. Navigate to the location of the unzipped files and make the scripts executable. We build official binaries for windows, mac os x, and. For a working example i have written a simple bash script which checks the number of currently opened files for the specified user with the specified warning and critical threshold. How to create a nagios plugin using bash script nagios exchange. While integrating bash scripts into nagios we have to understand that we are effectively using two systems. Both of these tools have made it into our top network monitoring software page and are all around great tools for those looking for an opensource network monitoring solution anyone that has to manage systems for a living should always.
Aug 03, 2015 nagios server is the master host how connects to nagios client and uses a nagios plugin to get information from nagios client. Nagios is designed to provide somewhat simple interface to plugin developers regardless of the plugin implementation. Nagios xi provides network, server, and application monitoring in one easy to configure package along with advanced alerting and reporting. The inner workings of your plugin are unimportant to nagios. For example, checking the status of one of your own php scripts, the size or a certain folder, or whether a cron job was executed. Using nagios core and nrpe to monitor remote linux hosts. Its a case of getting hold of group of commands, piping them and extracting the status of a service and then passing them as variables with if then else statements, that inturn informs nagios the status of the service being monitored.
The fact that nagios allows such extension is one of the reasons many administrators prefer it over other monitoring solutions. It really only needs to exit with a code of 0 for ok, 1 for warning, 2 for critical, or 3 for unknown. Get visibility across your entire infrastructure with our outofthebox integrations. Here is the section where all external scripts are defined a list of scripts available to run from the checkexternalscripts module. Creating custom nagios pluginsscripts in bash spiceworks. I mean what about vpn tunnels, interfaces, state tables, and services.
Plugin to compare the running kernel with a desired version. One of the things you are eventually going to run in to when running nagios, is that you may want to check something that isnt covered by a default or existing nagios plugin. Custom variable macros are trusted because you define them and therefore not cleanedsanitized before they are made available to scripts. Nagios server is the one who connects to nagios client and triggers a nagios plugin to get information from nagios client. Php is a popular programming language that allows you to quickly create scripts and install additional libraries. Nagios exchange the official site for hundreds of communitycontributed nagios plugins, addons, extensions, enhancements, and more. You may also improve script, validating hostname, curl. For the most repetitive task most of the administrator write a script to automate their daytoday repetitive task. In case of wslbased nagios plugins, similarly repeat steps to install them. How do i create custom nagios plugins using bash script sometimes people may want to monitor the value of certain output to ensure the availability of service stability. But i am unable to use it in nagios with nrpe to monitor remote system. Monitoring ambari with nagios custom nagios shell script with curl command to monitor ambari.
Get newsletters and notices that include site news, special offers and exclusive discounts about it. The debate between zabbix vs nagios is a topic that comes up quite often between it professionals, and the subject is valid. Install nagios xi in 3 easy steps microsoft vmware nagios. Tasks such as performing checks, sending notifications, processing performance data, are usually considered outofscope for nagios core and are handled by other nagios projects. What i hope youll get from this post is how easy it is for you to write your own powershell scripts for nagios. A shell script to monitor network, disk usage, uptime. You can output an optional informational message humanreadable and performance data. Nagios, the nagios logo, and nagios graphics are the servicemarks, trademarks, or registered trademarks owned by nagios enterprises. Apr 16, 2015 all of these situations can be monitored via nagios by creating a custom script, adding it as a command and wrapping it in a service within nagios. Using nagios core and nrpe to monitor remote linux hosts to. How to create a nagios plugin using bash script nagios exchange network. How to create a nagios plugin using bash script nagios. Nagios plugin is a script which can execute on the nagios client machine perl, php, python, bash script.
Configuration for custom scripts to use a custom script as a plugin to run remotely through nrpe. Nagios alternatives nagios replacement for monitoring. Script install nagios client on a remote windows server. This tutorial requires existing nagios server to be up and running and root privileges for nagios server and remote linux host. Select the template or script, choose the server for the script, and start monitoring. On this artilce we will expand on this idea and create nagios plugins using bash. Ncpa is written in python and is able to run on almost any operating system. It copies the msi and the ini file to the remote computers c drive and then executes it. We have previously covered how to install nagios monitoring server on ubuntu 12. As you can see, its easy to extend nagios with customwritten plugins. Nrds is a component installed on a nagios xi server that allows the administrator to create and manage configurations and plugins to be deployed with a passive agent that can be installed on a variety of operating systems. Antispam smtp proxy server the antispam smtp proxy assp server project aims to create an open source platformindependent sm. Nagios xi has helped organizations around the world make better business decisions as a proven it infrastructure monitoring solution.
See a variety of open source frontends by the community. Watch communications used nagios to build custom sms response scripts, which allowed them to acknowledge and handle alerts remotely an essential process when a large network outage occurs and all it staff need to be notified immediately. The fact that nagios allows such extension is one of the reasons many administrators prefer. The zip file contains shell scripts and configuration files for the integration. Jan 14, 2015 scripting nagios custom checks is not that hard. This is most easiest way to create your own script to monitor our expected output of a command. Nagios core serves as the basic event scheduler, event processor, and alert manager for elements that are monitored. Disclaimer the sample scripts are not supported under any microsoft standard support program or service.
Bash is a popular command processor available on linux by default. Nagios core is primarily focused on check scheduling, check execution, check processing, event handling, and alerting. Nagios network monitoring program host and service notifications are handled through a dedicated script for each case, resulting in two scripts to download and install. It eliminates snmp needs and goes much beyond so called agentless schemes like wmi by allowing execution of scripts and programs locally and returning results. Commands include service checks, service notifications, service event handlers, host checks, host notifications, and host event handlers. As you can see, its easy to extend nagios with custom written plugins. The script must have a specific return code and specific output. This is a collection of nagios plugins that were collected from various sources or that i wrote myself. Command definitions for nagios are defined in g file.
Most of the system administrators write custom shell scripts to do basic monitoring and sends email in case services crosses defined thresholds, but those scripts cant provide complete insights of the host being. How to create nagios plugins with bash on centos 6. Nagios plugins have their own ways to control switching to warning or down state. Both of these tools have made it into our top network monitoring software page and are all around great tools for those looking for an opensource network monitoring solution. We have previously covered how to install nagios monitoring server on centos 6 x64 this time, we will expand on this idea and create nagios plugins using bash. In this tutorial, we would learn how a simple bash script can be used to create a powerful nagios plugin in order to monitor any remote linux server. The duty of system administrator is really tough as heshe has to monitor the servers, users, logs, create backup and blah blah blah. How do i create custom nagios plugins using bash script. That is where the power of nagios and custom scripts come in.
Custom nagios shell script with curl command to monitor. Dec 15, 2017 so those are the standard checks nagios provides for freebsd and while they are helpful, they are seriously lacking when monitoring a pfsense and firewall specific functionality. Contribute to obfuscuritynagiosscripts development by creating an account on github. From where nagios run custom plugins stack overflow. May 22, 2017 disclaimer the sample scripts are not supported under any microsoft standard support program or service. Then you can make similar shell scripts commands with ambari rest api as shown in the figure for ambari health or host alerts. How to configure nagios html email alert tech space kh. Graph and data templates are part of the download package. My custom plugin reads a configuration file for functioning. All of these situations can be monitored via nagios by creating a custom script, adding it as a command and wrapping it in a service within nagios.
At least the snmpagent can also be used as high performant bridge to cache non snmp data polled by custom scripts. Im trying to implement a custom perl nagios script to check for rogue dhcp servers remotely with nrpe. If you are running nagios plugins installed on a remote host, consult the corresponding os manuals on upgradingreinstalling the plugins executables. Integrations plugins custom scripts nagios microsoft. Nagios server is the master host how connects to nagios client and uses a nagios plugin to get information from nagios client. See additional projects that extend nagios core functionality. This time, we will expand on this idea and create nagios plugins using php. How to extend nagios for custom monitoring network world. The script will install nagios client to a remote server. The builtin templates provide expert guidance on what to monitor, why to monitor, and the optimal thresholds to monitor your applications. Note that all the configuration in this section is done on the. Custom variable values can be referenced in scripts and executables that nagios runs for checks, notifications, etc.
Microsoft further disclaims all implied warranties including, without limitation, any implied warranties of merchantability or of fitness for a particular purpose. All other servicemarks and trademarks are the property of their respective owner. The sample scripts are provided as is without warranty of any kind. Bash script is an aggregation mechanism for the numerous tools and methods available on linux os.