Creating local users when using Remote Authentication and unavailable login

/config  not mounted cause that error. 

Use "mount -o remount,rw  /dev/mapper/vg--db--vda-set.1.xxxx /sysroot/xxx  " --"chroot /sysroot"  

Then "passwd root" is ok.   But after reset password and login , still failed.

root can login from local.   

Seems reset the root password successfully , but still can't login from console.

I'm trying figure out