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  1. Nagios XI - ERROR: unable to open include file: /etc/mrtg/conf.d/xxxxxxx.cfg Problem Description Bandwidth graphs in Nagios XI are showing no bandwidth. When manually executing MRTG you see the following output: MRTG Manual Command: LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg This error is produced: ERROR: unable to open... Read More
  2. Nagios XI - ERROR: unable to open include file: conf.d/*.cfg Problem Description Bandwidth graphs in Nagios XI are showing no bandwidth. When manually executing MRTG you see the following output: MRTG Manual Command: LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg This error is produced: ERROR: unable to open... Read More
  3. OpenSSL causes issue with check_nrpe plugin with NSClient++ The Problem The new openssl package on the latest versions of Centos / RHEL/ Ubuntu / Debian cause compatibility issues that cause the check_nrpe plugin to fail when checking Windows Hosts running NSClient++. Error Displayed CHECK_NRPE: (ssl_err != 5... Read More
  4. Nagios Core - Installing Nagios Core From Source Installing Nagios Core From Source This document describes how to install Nagios Core from source. This guide is broken up into several sections and covers different operating system (OS) distributions. If your OS Distribution is not included in this... Read More
  5. NRPE - How To Install NRPE v4 From Source Installing NRPE v4 From Source This document describes how to install and configure NRPE from source for use with Nagios Core/XI. The linux-nrpe-agent that ships with Nagios XI is only supported on CentOS, RHEL, OpenSUSE, SLES, Ubuntu, and Debian. ... Read More
  6. NRDP - Installing NRDP From Source Installing NRDP From Source This document describes how to install Nagios Remote Data Processor (NRDP) from source. NRDP is a simple, PHP-based passive result collector for use with Nagios. It is designed to be a flexible data transport mechanism and... Read More
  7. Nagios Plugins - Installing Nagios Plugins From Source Overview This KB article provides instructions on installing Nagios Plugins from source. You will have observed that most of the existing documentation already includes steps on installing the plugins. However there are some plugins that require oth... Read More
  8. Nagios Core - Upgrading Nagios Core From Source Upgrading Nagios Core From Source This document describes how to upgrade Nagios Core from source. This guide is broken up into several sections and covers different operating system (OS) distributions. If your OS Distribution is not included in this ... Read More
  9. NRPE - How to install NRPE from source without xinetd on CentOS 6. Overview This guide is intended for administrators who would like to run NRPE without using xinetd. As xinetd does provide some level of security, it is not recommended to do this.   Install and Configure NRPE to run without xinetd First, we need to... Read More
  10. NCPA - How To Build NCPA From Source   Building NCPA From Source This document describes how to build, install and configure Nagios Cross Platform Agent (NCPA) from source for use with Nagios Core/XI. NCPA is available as a pre-built package available on the Downloads page. This proce... Read More
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