Fail to SSH into host OS

Product support balenaOS
1

Hi,

I would like to SSH into Host OS on my Balena device.
But when I do balena ssh <device-ip> or just ssh root@<device-ip> I have a permission denied issue:

$ balena ssh 192.168.0.129
root@192.168.0.129: Permission denied (publickey).

Whereas if I do balena ssh <device uuid> -s it works correctly.

I’ve installed openssh container in a multicontainers project but I still have this error. (https://github.com/balena-io-playground/balena-openssh)

I’m using a production version of Balena. I tried to add my public key into authorized_keys file but the file doesn’t save the change…

I could use the uuid to SSH, but the device will be offline, so that’s why I need to access via the IP.

How can I do that?

Thanks

3

Hi,

You can add additional ssh keys to your device by placing them in the config.json file as per the meta-balena documentation[1].
If you’re running a Raspberry Pi then it might be easiest just to pop out the SD card and modify the file on your PC (the resin-boot volume), otherwise you can use balena ssh <device-id> while the device is online and modify the file directly in /mnt/boot (be careful while editing this file - JSON is very picky that the file is correctly formatted!) and then reboot the devices.

Thanks,
James.

1: https://github.com/balena-os/meta-balena#sshkeys

5

Thanks.

And can you confirm that if the device is offline the service will continue to run? I mean the device doesn’t need access to balenacloud?

6

Hi,

Yes, your containers will stay running as normal and you will be able to SSH into the device while it is disconnected from balenaCloud.

Thanks,
James.

7

Thanks a lot for the quick answer!

8

My pleasure.