[solved] What is wrong with my HA instance?

Configuration
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1

Dear Community,

In the Web UI of my HA instance I see that a HA supervisor update from version 2026.07.3 to 2026.07.5 is running for a week now and does not complete. I cannot access the terminal (in the WebUI). It shows only “coudn’t create directory /tmp/tmux-0 (Read-only filesystem).”

In the console I see messages like the ones on attached screenshot.

To me the only option seems to be to reset the instance. Do you have any recommondation what I can try instead and what might haved caused this issue?

Screenshot From 2026-08-04 15-53-11
Screenshot From 2026-08-04 15-53-11699×520 28.5 KB

2

Maybe restart it if it’s not responsive?
Seeing 2026.7.5 has not been released, this is quite a trick actually…

3

He means Supervisor 2026.7.5, which is released .
I would ReBoot instead of just restart … Actually that’s what latest Supervisor " Request/Requires "

4

The reboot helped. HA is up and running again.

I didn’t find any root cause for the issue. I think it’s time to put some effort to improve my monitoring.

5

The Root cause was that Supervisor requested a reboot, you just might not have seen it, Yes checking logs regularly i.e after major Releases etc, is a good way to start “maintenance monitoring”
Also checking /Settings and the little round “number” which indicates " Attention "