Werk #13912: Fix crash on restarting the RRDHelper

Component The Checkmk Micro Core
Title Fix crash on restarting the RRDHelper
Date Jul 21, 2022
Checkmk Editon Checkmk Enterprise (CEE)
Checkmk Version 2.1.0p9 2.2.0i1 2.0.0p28
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

The RRDHelper may need to be restarted without a full restart of the CMC. This could lead to an internal error and crash the CMC as well with a traceback such as

/omd/sites/.../bin/cmc(_Z11sig_survivei+0xc2) [0x6656d2] /lib/x86_64-linux-gnu/libc.so.6(+0x42520) [0x7fca01440520] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x12c) [0x7fca01494a7c] /lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7fca01440476] /lib/x86_64-linux-gnu/libc.so.6(abort+0xd3) [0x7fca014267f3] /omd/sites/.../bin/cmc() [0x64e6a5] /omd/sites/.../bin/cmc(_ZN10__cxxabiv111__terminateEPFvvE+0xa) [0xa0e61a] /omd/sites/.../bin/cmc() [0xa0e685] /omd/sites/.../bin/cmc(_ZN16DataExportThreadIN9rrdcached8protocol6UpdateENS1_6ReloadEE5startEv+0x78) [0x755998] /omd/sites/.../bin/cmc(_ZN9RRDHelper6createEPK6Object9RRDFormatRKSt6vectorI6MetricSaIS5_EE+0x703) [0x74ef33] /omd/sites/.../bin/cmc(_ZN9RRDHelper13processSingleERK15PerformanceDataPK6ObjectRK7RRDInfo+0xab0) [0x753780] /omd/sites/.../bin/cmc(_ZN9RRDHelper15processPerfDataERK15PerformanceDataPK6Object+0xdd) [0x75452d] /omd/sites/.../bin/cmc(_ZN4Core15processPerfdataEPK6Object+0xa1) [0x66b4b1] /omd/sites/.../bin/cmc(_ZN4Core25objectStateHasBeenChangedEP6Object+0x1c0) [0x66c370] /omd/sites/.../bin/cmc(_ZN4Core18processCheckResultERK11CheckResult+0x91) [0x66c801] /omd/sites/.../bin/cmc(_ZN11CheckHelper9getResultEv+0xb69) [0x8698e9] /omd/sites/.../bin/cmc(_ZN11CheckHelper12communicate_ERK6Poller+0xe6) [0x869c66] /omd/sites/.../bin/cmc(_ZN15CheckHelperPool12communicate_ERK6Poller+0x45) [0x86b5f5] /omd/sites/.../bin/cmc(_ZN4Core8mainLoopEv+0x4f5) [0x6724e5] /omd/sites/.../bin/cmc(_ZN4Core3runEv+0xae5) [0x673415] /omd/sites/.../bin/cmc(main+0xf1f) [0x65410f] /lib/x86_64-linux-gnu/libc.so.6(+0x29d90) [0x7fca01427d90] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80) [0x7fca01427e40] /omd/sites/.../bin/cmc(_start+0x25) [0x65b675]

To the list of all Werks