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Werk #10128: Fixed potential monitoring core crash when rrdcached is down

Component Other components
Title Fixed potential monitoring core crash when rrdcached is down
Date Sep 3, 2020
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.0.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT
1.6.0p18 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

The rrdtool library used by the Nagios Event Broker and the Micro Core has a subtle bug, which could lead to undefined behavior when the rrdcached is down or replies with an error. Symptoms are funny log messages or monitoring core crashes when graphs are viewed in the GUI. This has been fixed.

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