When I started with OpenHAB some time back, I had lots of problems with “system not reachable anymore”. As it turned out, I was looking at a bunch of root causes, which I managed to find and solve one after another, except for the one described above, which still drives me nuts (will open a thread in the official Raspberry forum soon).
Root causes I did find and fix:
- Spontaneous freezes 1: SD card broken. Classic. I managed to find traces in the logs that led me to the culprit, though “green Raspi LED stuck being on” was also a good hint which I could’ve understood earlier.
- Spontaneous feeezes 2: Swap too small. My setup also stresses the little box a lot. In the end, the systeminfo binding led me to the idea that “full swap” had something to do with it. Could be solved pretty easily.
- Spontaneous “deactivated Ethernet”: As said, still no clue. Have tried many things so far…
Update: For those who’d like to follow / face similar problems: I did open a new thread in the Raspberry forum, since I believe I’m looking at a Raspi-specific problem (rather than an openHAB or Docker-specific problem).