Check_MK Werk 5590: Fixed possible deadlock in shutdown/restart procedure

ID: 5590 Title: Fixed possible deadlock in shutdown/restart procedure Component: Livestatus Proxy Level: 1 Class: Bug fix Version: 1.5.0i3 During the shutdown/restart procedure of the livestatus proxy daemon a deadlock could occur. It seems this could rarely happen when the system running the process is under high load together with a large number of sites (>100) configured. When this situation occures, you can see several left over liveproxyd processes (master + several site processes) which can only be terminated with SIGKILL. When looking at the processes with strace, you can see hanging futex() calls. Workaround: In such a situation it is safe to simply kill all those processes using SIGKILL and start a clean liveproxyd processes after that.