Werk #11784: mpre check missing handling for 'U' value in Nagios performance data

Component Checks & agents
Title mpre check missing handling for 'U' value in Nagios performance data
Date Jan 19, 2021
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.1.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
2.0.0b5 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Because the value 'U' (for undefined) has not been handled an exception gets thrown when processing such a value: ValueError (could not convert string to float: 'U') This change will just ignore undefined performance values.

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