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From fred wang <fredwang...@gmail.com>
Subject Re: fail to setup passphraseless ssh and need some help
Date Thu, 02 Jul 2009 05:51:18 GMT
Here is the output of ssh -v localhost  and the configuration of ssh_config,


xxx@xxx-desktop:~$ ssh -v localhost

OpenSSH_4.7p1 Debian-8ubuntu1.2, OpenSSL 0.9.8g 19 Oct 2007

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: Applying options for *

debug1: Connecting to localhost [127.0.0.1] port 22.

debug1: Connection established.

debug1: identity file /home/xxx/.ssh/identity type -1

debug1: identity file /home/xxx/.ssh/id_rsa type -1

debug1: identity file /home/xxx/.ssh/id_dsa type 2

debug1: Remote protocol version 2.0, remote software version OpenSSH_4.7p1
Debian-8ubuntu1.2

debug1: match: OpenSSH_4.7p1 Debian-8ubuntu1.2 pat OpenSSH*

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_4.7p1 Debian-8ubuntu1.2

debug1: SSH2_MSG_KEXINIT sent

debug1: SSH2_MSG_KEXINIT received

debug1: kex: server->client aes128-cbc hmac-md5 none

debug1: kex: client->server aes128-cbc hmac-md5 none

debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent

debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP

debug1: SSH2_MSG_KEX_DH_GEX_INIT sent

debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY

debug1: Host 'localhost' is known and matches the RSA host key.

debug1: Found key in /home/xxx/.ssh/known_hosts:1

debug1: ssh_rsa_verify: signature correct

debug1: SSH2_MSG_NEWKEYS sent

debug1: expecting SSH2_MSG_NEWKEYS

debug1: SSH2_MSG_NEWKEYS received

debug1: SSH2_MSG_SERVICE_REQUEST sent

debug1: SSH2_MSG_SERVICE_ACCEPT received

debug1: Authentications that can continue: publickey,password

debug1: Next authentication method: publickey

debug1: Trying private key: /home/xxx/.ssh/identity

debug1: Trying private key: /home/xxx/.ssh/id_rsa

debug1: Offering public key: /home/xxx/.ssh/id_dsa

debug1: Authentications that can continue: publickey,password

debug1: Next authentication method: password

xxx@localhost's password:







xxx@xxx:~$ vi /etc/ssh/sshd_config

#KerberosOrLocalPasswd yes

#KerberosTicketCleanup yes



# GSSAPI options

#GSSAPIAuthentication no

#GSSAPICleanupCredentials yes



X11Forwarding yes

X11DisplayOffset 10

PrintMotd no

PrintLastLog yes

TCPKeepAlive yes

#UseLogin no



#MaxStartups 10:30:60

#Banner /etc/issue.net



# Allow client to pass locale environment variables

AcceptEnv LANG LC_*



Subsystem sftp /usr/lib/openssh/sftp-server



UsePAM yes



On Thu, Jul 2, 2009 at 1:18 PM, Konstantin Boudnik <cos@yahoo-inc.com>wrote:

> Yet another possibility is that your SSH daemon isn't configured to accept
> publickey as a valid authorization mean.
>
> Try to do ssh -v localhost and check if there's something similar to the
> following:
>
> debug1: Authentications that can continue:
> publickey,password,keyboard-interactive
> debug1: Next authentication method: publickey
> debug1: Trying private key: /home/xxx/.ssh/identity
> debug1: Trying private key: /home/xxx/.ssh/id_rsa
> debug1: Offering public key: /home/xxx/.ssh/id_dsa
> debug1: Server accepts key: pkalg ssh-dss blen 435
> debug1: read PEM private key done: type DSA
> debug1: Authentication succeeded (publickey).
>
> Cos
>
>
> On 7/1/09 10:11 PM, fred wang wrote:
>
>> I have setup ./.ssh/authorized keys has permssion 600, but it didn't work.
>> Thanks anyway
>>
>> ls -l .ssh/authorized_keys
>> -rw------- 1 xxx xxx 1222 2009-07-02 13:08 .ssh/authorized_keys
>>
>> On Thu, Jul 2, 2009 at 12:15 AM, Konstantin Boudnik<cos@yahoo-inc.com
>> >wrote:
>>
>> Make sure that your ~/.ssh/authorized_keys has permissions 600
>>>
>>> Cos
>>>
>>>
>>> On 7/1/09 7:35 AM, fred wang wrote:
>>>
>>> Hi all,
>>>>
>>>>   I failed to setup passphraseless ssh(I mean, I still need to input
>>>> password to do ssh localhost) when I tried to configure Hadoop to run on
>>>> psuedo-distributed operation,  could anyone help me solve this issue?
>>>> Thanks!
>>>>
>>>> (1)I use the Putty0.6 to remote access to Ubuntu by SSH.
>>>>
>>>> (2) execution steps and ouput
>>>>
>>>> $ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
>>>> Generating public/private dsa key pair.
>>>> Your identification has been saved in /home/xxx/.ssh/id_dsa.
>>>> Your public key has been saved in /home/xxx/.ssh/id_dsa.pub.
>>>> The key fingerprint is:
>>>> a9:39:4c:9b:22:f9:a4:77:70:24:fa:bf:12:f5:81:81 xxx
>>>>
>>>>
>>>> **note: it doesn't have message  'Enter passphrase (empty for no
>>>> passphrase):
>>>>     Enter same passphrase again: ' which appear in some introductory
>>>> paper.
>>>> "
>>>>
>>>> $ cat ~/.ssh/id_dsa.pub>>   ~/.ssh/authorized_keys
>>>> no output
>>>>
>>>> $ ssh localhost
>>>> The authenticity of host 'localhost (127.0.0.1)' can't be established.
>>>> RSA key fingerprint is 4f:a1:ff:ed:0c:46:3e:a9:8c:97:bc:b7:46:3e:35:d2.
>>>> Are you sure you want to continue connecting (yes/no)? yes
>>>> Warning: Permanently added 'localhost' (RSA) to the list of known hosts.
>>>> xxx@localhost's password:
>>>>
>>>>

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