Unable to start tailscaled service on debian 11 container

SUPPORT QUESTIONS
1

Tailscale version 1.22.0
Your operating system & version Debian bullseye 11

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Hello sir, could you guide me how to start tailscaled.service. i got an error message like this :
failed to connect to local tailscaled; it doesn’t appear to be running (sudo systemctl start tailscaled ?)

And when i try to run this command sudo systemctl start tailscaled. I got another different error :
Job for tailscaled.service failed because the control process exited with error code.
See “systemctl status tailscaled.service” and “journalctl -xe” for details.

Footage :

Thanks sir

2

The journalctl output it suggests to run would tell the error it is experiencing. I’d recommend running:

journalctl -u tailscaled --since=“2 hours ago”

3

Hello sir, thanks for the reply. I try it but got same error sir.

4

Please run: journalctl -u tailscaled --since=“2 hours ago”
and paste the output.

Don’t record another video of systemd not able to start. The two videos you’ve already sent demonstrate the problem sufficiently.

5

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This the capture output sir
Mar 08 13:52:04 4902ea4b0c99 systemd[1]: Failed to start Tailscale node agent.

6

log output :

7 
Mar 08 13:51:06 4902ea4b0c99 tailscaled[46069]: is CONFIG_TUN enabled in your kernel? `modprobe tun` failed with: modprobe: FATAL: Module tun not found in directory /lib/modules/5.4.17-2136.300.7.el8uek.aarch64
Mar 08 13:51:06 4902ea4b0c99 tailscaled[46069]: tun module not loaded nor found on disk

Is this a docker container? It does not have a /dev/net/tun device, which Tailscale needs.

In the Dockerfile you can give it access to the host system and the capabilities it would need:

volumes:
  - '/lib/modules:/lib/modules'
  - '/dev/net/tun:/dev/net/tun'
cap_add:
  - net_admin
  - sys_module
1 Like
8

Thanks sir, it already solved using auth keys. But i will use that if someday i make my own custom image.