Cannot SSH using Public Key when SSH server makes use of AuthorizedKeysCommand

Issue

• Users trying to login using Public Key authentication need to enter their password in the following circumstances

  • SSH server makes use of AuthorizedKeysCommand

    # grep ^AuthorizedKeysCommand /etc/ssh/sshd_config
    AuthorizedKeysCommand=/usr/bin/sss_ssh_authorizedkeys
    AuthorizedKeysCommandUser=nobody
    

  • Top directory for /home has been assigned to some specific group (e.g. users) instead of being owned by root:root with defaults permissions rwx:rx:rx

    # ls -ld /home
    drwxr-x---. 5 root users 1024 Dec 14 18:23 /home