Werk #18327: Fix handling of levels with infinity values while rendering horizontal rules within graphs

Component

User interface

Title

Fix handling of levels with infinity values while rendering horizontal rules within graphs

Date

Jan 12, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.6.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.5.0b1	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.4.0p20	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

If the warning or critical value (levels) of a graph has the value inf or -inf then the following error message is shown:

Cannot calculate graph recipes
Traceback (most recent call last):
  ...
  File "/omd/sites/sideview/lib/python3/cmk/gui/graphing/_formatter.py", line 85, in _apply_precision
    value_floor = math.floor(value)
                  ^^^^^^^^^^^^^^^^^
OverflowError: cannot convert float infinity to integer

This has been fixed now and the value will not be rendered.

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