I have a Mac mini running 10.13.6 as a server.

  • Time Machine
  • homebridge
  • File Server
  • Content caching
  • Netinstall
  • Xcode
  • running VMware Fusion with Linux guest system

Since a few weeks, the whole system starts at random moments.

What would be a way to troubleshot this?

  • Take a look at the logs (using the console application). Everything else depends on what you find here and cannot be generally answered. – not2savvy Feb 12 '19 at 12:02
  • I'm not sure where to look exactly. In the console app, I just see the events till the start of the machine. Can you point me, where I should start to look? – Sebastian Semmler Feb 12 '19 at 14:02

The first thing is to get into the console app / system log and trace the shutdown cause and timing of the restarts. Then you would look to see if there are hangs or crashes in /Library/Logs/DiagnosticReports prior to those events.

Depending on your interest in scripting shell to collect matches from log files, here’s an example of using those log files to find events like needles in a very large, long and confusing haystack.

Most likely, you will see a pattern (or see there is no pattern once you get 25 restarts logged and cataloged) and can remove the hardware, software or look into what is the logged reason.

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