Passwordless ssh login not working [SOLVED]

Brook · June 21, 2012, 1:49am

I can’t seem to get passwordless login to work - anyone see what I’m doing wrong please?

I’ve set up my keys on my local machine, and copied the key.pub to authorized_keys in the .ssh folder of my root account on the server.
I have also set permissions as: chmod 700 ~/.ssh/authorized_keys

In /etc/ssh/sshd_config I have set/uncommented:

PermitRootLogin without-password
RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile .ssh/authorized_keys

But when I try to log in I get:


OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011
Warning: Identity file .ssh/myname not accessible: No such file or directory.
debug1: Reading configuration data /etc/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to my.ser.ver.ip [my.ser.ver.ip] port 8784.
debug1: Connection established.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug2: key_type_from_name: unknown key type '-----END'
debug1: identity file /Users/Name/.ssh/id_rsa type 1
debug1: identity file /Users/Name/.ssh/id_rsa-cert type -1
debug1: identity file /Users/Name/.ssh/id_dsa type -1
debug1: identity file /Users/Name/.ssh/id_dsa-cert type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.6
debug2: fd 3 setting O_NONBLOCK
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-dss-cert-v00@openssh.com,ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit: none,zlib@openssh.com
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows 0 
debug2: kex_parse_kexinit: reserved 0 
debug2: mac_setup: found hmac-md5
debug1: kex: server->client aes128-ctr hmac-md5 none
debug2: mac_setup: found hmac-md5
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug2: dh_gen_key: priv key bits set: 137/256
debug2: bits set: 505/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: checking without port identifier
debug1: Host 'my.ser.ver.ip' is known and matches the RSA host key.
debug1: Found key in /Users/Name/.ssh/known_hosts:9
debug1: found matching key w/out port
debug2: bits set: 503/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: .ssh/myname (0x7fb728424c20)
debug2: key: /Users/Name/.ssh/id_rsa (0x7fb728417c90)
debug2: key: /Users/Name/.ssh/id_dsa (0x0)
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: .ssh/myname
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Offering RSA public key: /Users/Name/.ssh/id_rsa
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Trying private key: /Users/Name/.ssh/id_dsa
debug2: we did not send a packet, disable method
debug1: Next authentication method: password
root@my.ser.ver.ip's password:

And the contents of /var/log/secure say:


Jun 21 02:13:55 server sshd[5967]: Connection from 2.324.350.78 port 54327
Jun 21 02:13:55 server sshd[5967]: debug1: Client protocol version 2.0; client software version OpenSSH_5.6
Jun 21 02:13:55 server sshd[5967]: debug1: match: OpenSSH_5.6 pat OpenSSH*
Jun 21 02:13:55 server sshd[5967]: debug1: Enabling compatibility mode for protocol 2.0
Jun 21 02:13:55 server sshd[5967]: debug1: Local version string SSH-2.0-OpenSSH_5.3
Jun 21 02:13:55 server sshd[5968]: debug1: permanently_set_uid: 74/74
Jun 21 02:13:55 server sshd[5968]: debug1: list_hostkey_types: ssh-rsa,ssh-dss
Jun 21 02:13:55 server sshd[5968]: debug1: SSH2_MSG_KEXINIT sent
Jun 21 02:13:55 server sshd[5968]: debug1: SSH2_MSG_KEXINIT received
Jun 21 02:13:55 server sshd[5968]: debug1: kex: client->server aes128-ctr hmac-md5 none
Jun 21 02:13:55 server sshd[5968]: debug1: kex: server->client aes128-ctr hmac-md5 none
Jun 21 02:13:55 server sshd[5968]: debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received
Jun 21 02:13:55 server sshd[5968]: debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent
Jun 21 02:13:55 server sshd[5968]: debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT
Jun 21 02:13:55 server sshd[5968]: debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent
Jun 21 02:13:55 server sshd[5968]: debug1: SSH2_MSG_NEWKEYS sent
Jun 21 02:13:55 server sshd[5968]: debug1: expecting SSH2_MSG_NEWKEYS
Jun 21 02:13:55 server sshd[5968]: debug1: SSH2_MSG_NEWKEYS received
Jun 21 02:13:55 server sshd[5968]: debug1: KEX done
Jun 21 02:13:55 server sshd[5968]: debug1: userauth-request for user root service ssh-connection method none
Jun 21 02:13:55 server sshd[5968]: debug1: attempt 0 failures 0
Jun 21 02:13:55 server sshd[5967]: debug1: PAM: initializing for "root"
Jun 21 02:13:55 server sshd[5967]: debug1: PAM: setting PAM_RHOST to "2.324.350.78"
Jun 21 02:13:55 server sshd[5967]: debug1: PAM: setting PAM_TTY to "ssh"
Jun 21 02:13:55 server sshd[5968]: debug1: userauth-request for user root service ssh-connection method publickey
Jun 21 02:13:55 server sshd[5968]: debug1: attempt 1 failures 0
Jun 21 02:13:55 server sshd[5968]: debug1: test whether pkalg/pkblob are acceptable
Jun 21 02:13:55 server sshd[5967]: debug1: temporarily_use_uid: 0/0 (e=0/0)
Jun 21 02:13:55 server sshd[5967]: debug1: trying public key file /root/.ssh/authorized_keys
Jun 21 02:13:55 server sshd[5967]: debug1: fd 4 clearing O_NONBLOCK
Jun 21 02:13:55 server sshd[5967]: debug1: restore_uid: 0/0
Jun 21 02:13:55 server sshd[5967]: debug1: temporarily_use_uid: 0/0 (e=0/0)
Jun 21 02:13:55 server sshd[5967]: debug1: trying public key file /root/.ssh/authorized_keys
Jun 21 02:13:55 server sshd[5967]: debug1: fd 4 clearing O_NONBLOCK
Jun 21 02:13:55 server sshd[5967]: debug1: restore_uid: 0/0
Jun 21 02:13:55 server sshd[5967]: Failed publickey for root from 2.324.350.78 port 54327 ssh2
Jun 21 02:13:55 server sshd[5968]: debug1: userauth-request for user root service ssh-connection method publickey
Jun 21 02:13:55 server sshd[5968]: debug1: attempt 2 failures 1
Jun 21 02:13:55 server sshd[5968]: debug1: test whether pkalg/pkblob are acceptable
Jun 21 02:13:55 server sshd[5967]: debug1: temporarily_use_uid: 0/0 (e=0/0)
Jun 21 02:13:55 server sshd[5967]: debug1: trying public key file /root/.ssh/authorized_keys
Jun 21 02:13:55 server sshd[5967]: debug1: fd 4 clearing O_NONBLOCK
Jun 21 02:13:55 server sshd[5967]: debug1: restore_uid: 0/0
Jun 21 02:13:55 server sshd[5967]: debug1: temporarily_use_uid: 0/0 (e=0/0)
Jun 21 02:13:55 server sshd[5967]: debug1: trying public key file /root/.ssh/authorized_keys
Jun 21 02:13:55 server sshd[5967]: debug1: fd 4 clearing O_NONBLOCK
Jun 21 02:13:55 server sshd[5967]: debug1: restore_uid: 0/0
Jun 21 02:13:55 server sshd[5967]: Failed publickey for root from 2.324.350.78 port 54327 ssh2

Anyone see what I’m doing wrong? I have set password log-ins many times before but haven’t had this problem before

helpmin · June 21, 2012, 3:44am

It is most likely a permission issue with your home and/or .ssh and/or authoriz… file.

Brook · June 21, 2012, 2:45pm

Here are my permissions:


chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys
-rw------- 1 root root  817 Jun 21 14:36 authorized_keys

drwx------  2 root root 4.0K Jun 21 14:36 .ssh

Do I need to check anything else?
Is SSHD able to read these files as they are in the root ~/

EDIT: FIXED, duh (!!!) running the command with -vvv showed me my RSA file was broke - ran ‘ssh-keygen -t rsa’ for a new one and it’s working now

Thanks!