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Nagios XI:FAQs

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Revision as of 08:54, 27 August 2010 by Mguthrie (Talk | contribs) (Network status map parent/child relationship not updating(XIv1.3))

Back To Nagios XI Overview

Answers to Frequently Asked Questions (FAQs) regarding Nagios XI can be found here.


FAQs

What Are FAQS? Frequently Asked Questions, or "FAQs", are listed questions to frequently asked in some context, and pertain to a particular topic.

Fun Note: Since the acronym FAQ originated in textual media, its pronunciation varies - "fack," "fax," "facts," and "F.A.Q." are commonly heard. Depending on its usage, the term may refer specifically to a single frequently asked question, or to an assembled list of many questions and their answers.

Common Solutions - Try These First

Follow these steps if you are encountering problems with Nagios XI. These actions solve many commonly asked questions.

  • Clear your browser's cache to get the newest XI javascript code.
    Instructions on how to do it.
  • How To Reset Security Credentials (if performance graphs aren't displayed)
    Select the Reset Security Credentials option in the Admin section and click Update.
  • How To Reset File Permissions (if configuration changes are not taking effect)
    Instructions how.
  • Debugging Configuration Change Problems (if configuration changes are not taking effect)
    Write configuration file tool.

Nagios Admin Account Notifications Not Controlled Through XI

  • The nagiosadmin user was set to use the generic_template contact template, which resulted in notifications not being controlled through the XI interface.
    This can be corrected by changing the user's contact template to be xi_generic_template is the Core Config Manager. This bug was corrected in 2009R1.2 and only effects systems that had/have previous versions installed.

Distributed Monitoring

Is Nagios XI capable of Distributed Monitoring?

Yes, click here for the Distributed Monitoring Documentation

Performance Graphs Are Missing Or Not Displayed

This can happen for a variety of reasons, but there are several simple solutions that resolve this issue for most people:

Installation

yum failed or proxy/firewall

When it comes to issues or problems related to Operating System configuration we are just not equipped to assist.

Contact distributor for support using yum and the error "transfer failed - Unknown or unexpected error". Also contact DAG with assistance with regard to Firewall settings.

You don't need to use DAG, any where you can get the required pkgs would be fine if that's what RedHat suggests.

For issues with our VM Images seek assistance for the appropriate version of CentOS(5.4 as of this writing).

Core Config Manager Problems

GUI Issues

Most of these are related to IE's implementation of JavaScript. If possible, use a browser that more closely implements the ECMAScript Language Specification.

Configuration Changes

If you make changes to your configuration and they are not reflected in XI, it may be due to file permissions. Here are two options to try:

Nagios Core /usr/local/nagios/etc Folder
  • You may keep local configurations in /usr/local/nagios/etc/static

Never read the files in this folder, this is bound to ruin your whole day. Never change the files in the folder, your changes will never be read. This folder used to be the place where Nagios Core would read it's configuration from, now it's a sandtrap covering a tar pit.

  • STAY AWAY.

Email Notifications Are Not Going Out

This can happen for a variety of reasons:

  • The nagiosadmin is set to use the generic_template contact template.
    This should be xi_generic_template, and can be modified by using the Core Config Manager. This bug was corrected in 2009R1.2 and only effects systems that had/have previous versions installed.
  • Outbound SMTP connections may be blocked by your border firewall
  • Unauthenticated SMTP relaying may be denied somewhere downstream - try switching email methods from Sendmail to SMTP in the admin section

SourceGuardian Errors

After upgrading to 2009R1.2C, some users started getting an error about SourceGuardian. Add this line to your /etc/php.ini file:

 extension=ixed.5.1.lin

Once you make that change, restart Apache:

 service restart httpd

Resolving "NSP: Sorry Dave, I can't let you do that" Errors

Session protection was added to 2009R1.2C to prevent CSRF attacks. This code to do this caused some users to see this error. The problem was due to the user's browser caching older versions of the XI javascript code. In order to clear the cache and prevent this from happening, you need to clear your browser's cache. This is typically done (in Firefox) by holding down the shift key and clicking reload. See Other well documented procedures on clearing the browser cache.

Login Screen Keeps Redirecting To Itself

The web browser keeps redirecting to the login screen even after entering login credentials. This has been noticed in Internet Explorer.

Nagios XI uses cookies to save session state. These cookies are set to expire after 30 minutes. If the time on the Nagios XI server is incorrect, the cookies returned to the client's browser might appear to be expired due to the time difference between the client's computer and the Nagios XI server. Solution: Fix the time on the Nagios XI server to ensure it is correct.

Unable To Delete Hosts

Hosts can only be deleted after all of their dependent services and associated relationships have been deleted. Make sure to delete any associated services or other objects before deleting the host.


Network status map parent/child relationship not updating(v1.3)

Underneath the Parents box in the CCM, make sure the "standard" radio button is selected. If "null" is selected your parent host selection doesn't get written to disk. We're working on a method of fixing the CCM so this doesn't happen with several fields.


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