Werk #15415: Interface checks: Fix errors in perfometer rendering

Component

Checks & agents

Title

Interface checks: Fix errors in perfometer rendering

Date

Apr 11, 2023

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.3.0b1 Not yet released	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.3.0b1	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.2.0b3	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

This issue only affected network interface services. After discovering new services or after an update, the user interface initially displayed Exception: list index out of range in the place where the perfometer is supposed to be displayed. The log file var/log/web.log also recorded these errors:

2023-04-11 10:00:28,884 [40] [cmk.web 78582] error rendering performeter
Traceback (most recent call last):
  ...
IndexError: list index out of range

These errors quickly disappeared after a couple of check cycles. As of this werk, these error messages are not displayed anymore. Instead, the perfometer is rendered as soon as all necessary metrics are found.

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