Nagios Support Forum

We recently upgraded to 2026R1.

The font size of values shown on performance graphs are very small and difficult to read.

Manual zoom within the web browser itself does not help.

Can we increase this font size?
Nagios XI - System Info
System
Nagios XI version: 2026R1
Release info: useqa-plmmon01.corp.lear.com 4.18.0-553.82.1.el8_10.x86_64 x86_64
Red Hat Enterprise Linux release 8.10 (Ootpa)
Gnome is not installed

Hi @jrice02,

This is an issue we are aware of and are currently working on. Thank you for reaching out, and please let us know if you have any further questions and feedback.

-Zach

Thanks Zack,

Users are also complaining about the new "deep red" color used for Critical warnings which is a hard to read contrast.

Hi @jrice02

As of 2026R1.0.1, the color for the critical status has been adjusted for better readability.

I'd also like to confirm that we have solved the issue regarding the font size of the legends on performance graphs, and the font size has been adjusted back to its intended value. This fix will be included in the next update for Nagios XI.

Thank you for the feedback!
-Zach

Hi @jrice02,

Also check topic: viewtopic.php?t=76556
I can confirm that since 2026R1.0.1 the deep red color is fixed.
The font size and small legend are indeed CSS issues.

For now, I fixed it manually on our QA environment: I know, it will not be supported, but didn't have any issues with it so far.
In /usr/local/nagiosxi/html/includes/css/base.css
I added this around line 1377
.highcharts-root {
font-size: 12px !important;
}

Regards,
Peter

Thanks for this update.

This makes the performance charts much more readable.