Werk #2444: lnx_if: now able to detect interfaces which "break" during runtime

Component Checks & agents
Title lnx_if: now able to detect interfaces which "break" during runtime
Date Nov 1, 2015
Level Trivial Change
Class New Feature
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
1.2.7i4
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.7i4
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.7i4
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.7i4
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.7i4
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.7i4
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.7i4
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.7i4 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.8b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Previously the check lnx_if used the output of the ethtool command to determine if an interface is up or down. There was a fallback in case ethtool was not available, or did not report valid data at all (happens on broken interfaces). However, these fallback could not detect interfaces which break during runtime.

The linux agent now reports additional information collected with the ip link command. In case the ethtool information is missing the lnx_if check will now use the data from ip link instead.

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