authentication - sshd Authorized key command not authenticating user -


i'm using simple ad authenticate ssh users on rhel 7.2 server. i've modified schema on ad include ldap parameter sshpublickey , ldappublickey , imported public key ad user.

i can authenticate against ad fine using password login. can return ssh key ad using following command

/usr/bin/sss_ssh_authorizedkeys user@domain.example.com

i can manually copy returned key /home/user@domain.example.com/.ssh/authorized_keys , can log in absolutely fine.

however when add following sshd_config , restart sshd can't authenticate (just permssion denied)

authorizedkeyscommand /usr/bin/sss_ssh_authorizedkeys authorizedkeyscommanduser root

to summarise, can authenticate against ad fine using passowrd, can return public key ad fine (and authenticate against key when manaually copy authorized_keys) can't work using sshd's authorizedkeyscommand

turns out there spaces in after authorizedkeyscommand file. noticed starting sshd debug:

systemctl stop sshd /usr/sbin/sshd -d

i saw when attempting ssh connection:

could not stat authorizedkeyscommand "/usr/bin/sss_ssh_authorizedkeys  ": no such file or directory

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