Werk #10494: lnx_if: Fixed confusion of interface state UNKNOWN, DOWN if ethtool output is missing

Component

Checks & agents

Title

lnx_if: Fixed confusion of interface state UNKNOWN, DOWN if ethtool output is missing

Date

Nov 9, 2019

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.0.0i1	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.6.0p6	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

If the command {{ethtool}} provides information about interfaces the operational state of an interfaces is UP if ethtool outputs {{Link detected: yes}} otherwise DOWN in case of {{Link detected: no}}.

If this output is missing then the interface flags in angle brackets of the command {{ip}} are used to get the operational state. Out interpretation was as following: If the flags contain UP, the operational status of the interface is UP. If the flags contain DOWN, the status is DOWN otherwise it is UNKNOWN.

But we wrongly assumed that these flags contain DOWN. This has been fixed and now it is handled as following: If the flags contain UP, the status is UP otherwise it is DOWN.

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