This is for collecting information while troubleshooting; I'm currently looking for a pattern in an intermittent ZHA issue.
I can probably find a log of when the Docker container was restarted, but I don't think that would include the times that HA was told to restart from the web UI. home-assistant.log only appears to go back to the last restart, and home-assistant.log.1 the restart before that.
On a related note, how do I make it keep more than one previous log?
#Where can I find a history of when HA has been restarted?
frigid oxide
raw acorn
You can use sensor.uptime which has a state set to the last time HA started. Otherwise, you could create a template sensor that triggers on the HA shutdown event and set it's state to the time HA stopped.
And no, you can't keep previous logs (unless you do something with Python or something that gets called during the HA shutdown event).
severe roost
HAOS keeps lots of old logs via journald though.