After many months of rock-solid performance, for two days in a row now my Hass.io server has at some point during the day become unresponsive. However I can still SSH in, and reboot the host, and then things come back to life.
While I can still SSH in, the Home Assistant API and UI are both completely unresponsive. There’s nothing telling in the HA logs, but there are a lot of relatively new failures…but none of it looks critical by itself. Things like failing to fetch the weather map, or failing to connect to the Ecobee. Most of it is complaining that it can’t reach my Roomba, which I haven’t had time to investigate. This is all new behavior, but as I said since I don’t see anything critical I suspect these are symptoms rather than causes.
I have made no changes to my setup in weeks, other than doing the occasional upgrade. Currently running on 0.64.3. Where should I be looking for information to troubleshoot?