Home » Categories » Multiple Categories

Nagios XI - Disabling Database UTF8 Connectivity

Overview

This document describes how to disable UTF8 connectivity to the MySQL / MariaDB databases for Nagios XI. By default Nagios XI uses UTF8 however sometimes this needs to be disabled to allow MySQL / MariaDB to define the connectivity method.

This configuration ensures that characters from different languages can be correctly stored and retrieved in the databases. An example of where this is commonly used is when creating Dashboards in Nagios XI as per this screenshot:

 

 

 

The configuration directive explained in this documentation was introduced in Nagios XI 5.4.13 to address some issues that resulting in the names appearing garbled or with ??? instead of the correct character, for example:

 

 

If you do experience garbled or ??? characters, following this KB article will resolve the issue.

 

 

The Nagios XI Configuration Directive

The following configuration directive was added in Nagios XI 5.4.13:

$cfg['db_conn_utf8'] = 0;

 

To determine if you currently have that directive enabled, establish a terminal session to your Nagios XI server as the root user and execute the following command:

grep db_conn_utf8 /usr/local/nagiosxi/html/config.inc.php

 

If the grep command produces NO output then the directive does not exist in your configuration and it needs to be added. This can be added with the following command:

printf "\n\$cfg['db_conn_utf8'] = 0;\n" >> /usr/local/nagiosxi/html/config.inc.php

 

If the grep command produced output then it can be changed with the following command (sets it to 0):

sed -i "s/db_conn_utf8'\] =.*/db_conn_utf8'\] = 0;/g" /usr/local/nagiosxi/html/config.inc.php

Defining the directive to 0 will resolve the issue you for garbled or ??? characters.

 

If you wanted to change it to 1 then use the following command:

sed -i "s/db_conn_utf8'\] =.*/db_conn_utf8'\] = 1;/g" /usr/local/nagiosxi/html/config.inc.php

 

 

The change takes effect immediately.

 

 

Final Thoughts

For any support related questions please visit the Nagios Support Forums at:

http://support.nagios.com/forum/

1 (1)
Article Rating (1 Votes)
Rate this article
  • Icon PDFExport to PDF
  • Icon MS-WordExport to MS Word
Attachments Attachments
There are no attachments for this article.
Related Articles RSS Feed
Nagios XI - Unable To Login Using Two Factor Authentication
Viewed 788 times since Tue, Apr 10, 2018
Nagios XI - How to Integrate SNMP Traps With Nagios XI
Viewed 3537 times since Thu, Jan 28, 2016
Nagios XI - HTTP 500 Error / White Screen After Login
Viewed 950 times since Mon, Feb 29, 2016
Nagios XI - MSSQL Wizards - Adaptive Server connection failed
Viewed 2163 times since Thu, Aug 3, 2017
Nagios XI - Defining Global Environment Variables
Viewed 2018 times since Thu, Mar 17, 2016
Nagios XI - Status Information Cut Off At 256 Characters
Viewed 1345 times since Thu, Feb 25, 2016
Nagios XI - Installing Components
Viewed 828 times since Wed, Jan 27, 2016
Nagios XI - Performance Graph Problems
Viewed 3392 times since Fri, Dec 19, 2014
Nagios XI - Hardware Requirements - Baseline Testing
Viewed 947 times since Sun, Jul 17, 2016
Resizing The VM Disk Size For CentOS 7
Viewed 10402 times since Tue, May 8, 2018