tailscaled log cause RAMdisk full

[Bpazy]

I found out that QNAP root filesystem full becase tailscaled write logs into /var/lib/tailscale continuously. Full RootFS makes QNAP not working.

QNAP root filesystem is 400M RAMdisk and released only restarting:

[/var/lib/tailscale] # df -h
Filesystem                Size      Used Available Use% Mounted on
none                    400.0M    310.9M     89.1M  78% /

In my QNAP, tailscaled.log1.txt take up 30M. Unfortunately, I delete it and forgoting to back up the log.

Here's grafana monitor shows increased disk usage:

And resloved after deleting tailscale and log:

Maybe logs should be disabled or cleanup regularly.

[DentonGentry]

Could I ask what version of the package you are running? https://github.com/tailscale/tailscale/pull/5163/files was supposed to move the logs to /tmp/tailscale-logs and limit their max size to 1 Megabyte, and went into 1.30.x.

[Bpazy]

@DentonGentry thank you. i'm not sure about the exact version but it should be a very old version in 2021.

i will try latest version to checkout

[Bpazy]

not reproduce at latest tailscale. I will close the issue.