386.8 - ssh passwordless login not working

[markcs]

Hi,
I recently updated my RT-AX88U to 386.8. Since then I can not get the ssh login working with authorized keys. I had this working previously.

I've done the usual steps in various different orders:

1. Deleted the key from the GUI​

2. Deleted the key using cmdline using various methods ( nvram set sshd_authkeys='' and nvram unset sshd_authkeys. I've applied those changes with nvram commit)​

3. Checked keys using 'nvram show | grep ssh-' once doing the above​

4. Rebooted the router after clearing the ssh keys and after committing any changes​

5. Setting the keys in the GUI and in the command line​

6. Checking that what I've set in nvram matches what is copied over to /tmp/home/root/.ssh/authorized_keys​

I have not reset the router to factory settings as I don't really want to if I can avoid it.

Nothing works. Does anyone else have this issue or any other steps to resolve would be appreciated.

 

[RMinNJ]

Check permissions on the user's .ssh directory and the authorized_keys file?

 

[markcs]

Okay, I found the issue. In the logs I could see "Exit before auth from <192.168.1.122:47096>: Max auth tries reached - user 'is invalid'"

I have a script which was trying to auto login to the router, but was failing. It was failing because after the upgrade I assume the ssh authorized key was not copied correctly, then the script was trying and failing to login and dropbear blocked the user. I paused the scripts for a while, reset the authorized keys using the "nvram set " method, and now all works.