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Back To Nagios XI Overview
Answers to Frequently Asked Questions (FAQs) regarding Nagios XI can be found here.
- 1 FAQs
- 1.1 Common Problems - Try These Solutions First
- 1.2 Capabilities
- 1.3 System Configuration Problems
- 1.4 Installation and Upgrade Problems
- 1.5 Configuration Problems
- 1.6 Performance Graph Problems
- 1.7 Notification Problems
- 1.8 Other Issues
What Are FAQs? Frequently Asked Questions, or "FAQs", are answers to questions that are frequently asked in some context.
Common Problems - Try These Solutions First
Follow these steps if you are encountering problems with Nagios XI. These actions solve many commonly asked questions.
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)
- Debugging Configuration Change Problems (if configuration changes are not taking effect)
Write configuration file tool.
Is Nagios XI capable of Distributed Monitoring?
Yes it is! Nagios Core (the underlying monitoring engine) can be configured for distributed monitoring. For more information, read the Nagios Core documentation on distributed monitoring.
System Configuration Problems
Problems Using Nagios XI With Proxies
We do not officially support Nagios XI when you install and use proxy software that restricts traffic to or from the Nagios XI server. There are several reasons for this. First, Nagios XI requires external access for package installation and updates. Package installation and updates may not work when proxies are used. Additionally, the Nagios XI code makes several internal HTTP calls to the local Nagios XI server to import configuration data, apply configuration changes, process AJAX requests, etc. These functions may not work properly when you deploy a proxy, which would result in a non-functional Nagios XI installation.
If you have managed to successfully use Nagios XI with a proxy, please let us know how you did this, so we can share it with others and improve future product support for proxies.
Installation and Upgrade Problems
After upgrading to 2009R1.2C, some users started getting an error about SourceGuardian. Add this line to your /etc/php.ini file:
Once you make that change, restart Apache:
service restart httpd
Resolving "NSP: Sorry Dave, I can't let you do that" Errors
Modifying The Contents Of /usr/local/nagios/etc
- You can keep custom configuration files in the /usr/local/nagios/etc/static directory
- Don't modify config files directly in /usr/local/nagios/etc, as they will be overwritten by the Core Config Manager
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.
Core Config Manager Problems
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:
- Reset File Permissions
Instructions how to do this.
- Using the CCM Write File Tools
Using the Write Configuration file tool.
Performance Graph Problems
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:
- Reset Security Credentials
Select the Reset Security Credentials option in the Admin menu and click Update
- Reset File Permissions
Instructions on how to reset file permissions.
- Further reading
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.
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
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.
Check Services Being Orphaned
Some users have encountered large numbers of warning messages that accumulate quickly that read as follows:
Warning: The check of service <Your Service> on host <Your Host> looks like it was orphaned (results never came back). I'm scheduling an immediate check of the service..
This is most likely caused by multiple instances of Nagios running. To fix this kill all instances of Nagios and then restart the process. Related forum post can be read here.