Overview This KB article explains how you can troubleshoot Active Directory (AD) and Lightweight Directory Access Protocol (LDAP) authentication issues. The troubleshooting methods are similar across Nagios Log Server, Network Analyzer and xi... Read More

Overview In larger enterprises, a "standard build" of CentOS or RHEL is required based on internal policies. These often differ from a clean minimal install of the OS as per our requirements. Depending on the policies implemented in the build process... Read More

Problem Description The Source's graph in the summary tab of Network Analyzer says "No Data Available".   Resolution This could mean one of many things. The fact that it is showing "No Data Available" means that the script that generates the... Read More

Problem Description You added a new source, but it did not automatically start. Now the Source won't start.   Resolving The Problem When creating a new Source in Network Analyzer it creates the directory structure - the folders where it will... Read More

Problem Description Any device that implements NetFlow Secure Event Logging (NSEL) instead of a standard sflow or netflow protocol may be affected. From Cisco's documentation:NSEL events are used to export data about flow status and are... Read More

Understanding The Network Analyzer Backend This document gives an overview of how the backend of Nagios Network Analyzer functions, and general tips on functionality. Documentation - Understanding The Network Analyzer Backend   Final Thoughts For... Read More

Problem Description You do not know the password for the nagiosadmin account and need to reset it.   Resetting The Password Open an SSH or direct console session to your Nagios Network Analzyer server and execute the following command: /usr/local... Read More

Problem Description The Nagios application is not displaying the correct information. This commonly occurs after applying an update to the Nagios program.   Explanation Your web browsers cache has not been refreshed with the latest code since the... Read More

Problem Description In rare circumstances you may come across the following error in your web browser when accessing one of the Nagios products: Content Encoding ErrorThe page you are trying to view cannot be shown because it uses an invalid or... Read More