Hi All, I tried build openssh from source code on Alpine Linux. The AuthorizedKeysCommand is not working. Using .ssh/authorized_keys to auth the user is fine. The ‘AuthorizedKeysCommand’ is never called. However, if I install the openssh by ‘apk add openssh’, everything including the AuthorizedKeysCommand works just fine. Steps taken: 1. autoconf && autoheader 2. ./configure --prefix=/usr --sysconfdir=/etc/ssh --with-md5-passwords 3. make && make install And I have the sshd_config like the following: LogLevel DEBUG Protocol 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_ecdsa_key HostKey /etc/ssh/ssh_host_ed25519_key SyslogFacility AUTHPRIV PermitRootLogin no StrictModes yes MaxAuthTries 3 PubkeyAuthentication yes AuthorizedKeysCommand /usr/bin/sftp-getkey %u %f AuthorizedKeysCommandUser nobody PasswordAuthentication no PermitEmptyPasswords no ChallengeResponseAuthentication no X11Forwarding no ClientAliveInterval 420 AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE Subsystem sftp internal-sftp Match User 10390 ChrootDirectory /mnt/user-10390 AllowTCPForwarding no X11Forwarding no ForceCommand internal-sftp Everything seems fine, however, the sshd kept ignored AuthorizedKeysCommand when the user is trying to login. It keeps falling back to '/home/10390/.ssh/authorized_keys’ Any ideas why? Thanks & Best Regards, House Here’s the detail of the log Connection from 10.240.2.252 port 52275 on 10.156.4.130 port 22 debug1: Client protocol version 2.0; client software version OpenSSH_7.6 debug1: match: OpenSSH_7.6 pat OpenSSH* compat 0x04000000 debug1: Local version string SSH-2.0-OpenSSH_7.6 debug1: permanently_set_uid: 22/22 [preauth] debug1: list_hostkey_types: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519 [preauth] debug1: SSH2_MSG_KEXINIT sent [preauth] debug1: SSH2_MSG_KEXINIT received [preauth] debug1: kex: algorithm: curve25519-sha256 [preauth] debug1: kex: host key algorithm: ecdsa-sha2-nistp256 [preauth] debug1: kex: client->server cipher: chacha20-poly1305@xxxxxxxxxxx MAC: <implicit> compression: none [preauth] debug1: kex: server->client cipher: chacha20-poly1305@xxxxxxxxxxx MAC: <implicit> compression: none [preauth] debug1: expecting SSH2_MSG_KEX_ECDH_INIT [preauth] debug1: rekey after 134217728 blocks [preauth] debug1: SSH2_MSG_NEWKEYS sent [preauth] debug1: expecting SSH2_MSG_NEWKEYS [preauth] debug1: SSH2_MSG_NEWKEYS received [preauth] debug1: rekey after 134217728 blocks [preauth] debug1: KEX done [preauth] debug1: userauth-request for user 10390 service ssh-connection method none [preauth] debug1: attempt 0 failures 0 [preauth] debug1: user 10390 matched 'User 10390' at line 43 debug1: userauth-request for user 10390 service ssh-connection method publickey [preauth] debug1: attempt 1 failures 0 [preauth] debug1: temporarily_use_uid: 0/0 (e=0/0) debug1: restore_uid: 0/0 debug1: temporarily_use_uid: 0/0 (e=0/0) debug1: restore_uid: 0/0 debug1: temporarily_use_uid: 10390/1000 (e=0/0) debug1: trying public key file /home/10390/.ssh/authorized_keys debug1: fd 4 clearing O_NONBLOCK debug1: restore_uid: 0/0 debug1: temporarily_use_uid: 10390/1000 (e=0/0) debug1: trying public key file /home/10390/.ssh/authorized_keys2 debug1: Could not open authorized keys '/home/10390/.ssh/authorized_keys2': No such file or directory debug1: restore_uid: 0/0 Failed publickey for 10390 from 10.240.2.252 port 52275 ssh2: RSA SHA256:mUPB/sDD50ZizduqE636LK77NKEWNbHqN6B4tjInWQU Connection closed by authenticating user 10390 10.240.2.252 port 52275 [preauth] _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev