Werk #4426: Fixed PID file locking

Component	Core & setup
Title	Fixed PID file locking
Date	Feb 23, 2017
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.5.0i1 Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.4.0b3 Checkmk Enterprise (CEE), Checkmk MSP (CME)

Previously it was possible to start the Check_MK Micro Core multiple times, which resulted in totally erratic behavior. This has been fixed by correctly locking the core's PID file.

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