'Wrong' permissions of /

[ThomasKaiser]

(Recent?) Armbian images set permissions of the root directory to 777 while they should be 755. As a result some software checking recursively for permissions like sshd complain and refuse to work in specific modes.

Is this by intention?

[igorpecovnik]

No, haven notice. Where is that set?

[ThomasKaiser]

No idea where it originates from. But at least with latest images it's set that way. I realized it with Stretch and now double checked with Bionic:

root@nanopik1plus:~# ls -lad /
drwxrwxrwt 22 root root 4096 Aug 20 18:43 /
root@nanopik1plus:~# lsb_release -c
Codename:	bionic

Anyway, doing an chmod 755 $rootfs-root prior to closing the image should fix the issue.

[adatum]

I ran into this issue on OMV_4_Odroid_XU4_HC1_HC2.img.xz release dated 2018-06-03 and downloaded on 2019-08-08 at https://sourceforge.net/projects/openmediavault/files/OMV%204.x%20for%20Single%20Board%20Computers/

ssh authentication failed (public key denied) when password authentication is disabled. It worked fine with password authentication enabled.

The Authentication System Log in openmediavault showed

sshd: Authentication refused: bad ownership or modes for directory /

chmod 755 / fixes the problem.

[sw25481]

I ran into the same problem with openmediavault_5.3.9-amd64.iso downloaded 20 Sep 2020 installed into a VMware virtual machine. chmod 755 / fixed if for me as well

[Herjar]

I got the same issue with openmediavault_5.5.11-amd64.iso installed as vm in proxmox. sudo chmod 755 / fixed it here too.

[lededev]

armbian have make /root directory dr-xr-xr-x, and with wrong user id.
That cause ssh pub key login failed.
fix:
chmod 700 /root
chown root:root /root

[igorpecovnik]

Stock Armbian doesn't seem to have this problem:
drwx------ 7 root root 4096 Apr 21 00:35 root

[lededev]

Well, if not stock, that may caused by some programs.