fundation SSH到workstation遇到 Permission denied

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具体错误如下：

[grid@racnode1 ~]$ /usr/bin/ssh racnode1 date

Warning: Permanently added 'racnode1,192.168.114.115' (RSA) to the list of known hosts.

Permission denied, please try again.

Permission denied, please try again.

Permission denied (publickey,gssapi-with-mic,password).

[grid@racnode1 ~]$

具体debug检查

[grid@racnode1 ~]$ ssh -v racnode1 date

OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: Applying options for *

debug1: Connecting to racnode1 [192.168.114.115] port 22.

debug1: Connection established.

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

debug1: identity file /home/grid/.ssh/id_rsa type 1

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

debug1: loaded 3 keys

debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3

debug1: match: OpenSSH_4.3 pat OpenSSH*

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_4.3

debug1: SSH2_MSG_KEXINIT sent

debug1: SSH2_MSG_KEXINIT received

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

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

debug1: SSH2_MSG_KEX_DH_GEX_INIT sent

debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY

Warning: Permanently added 'racnode1,192.168.114.115' (RSA) to the list of known hosts.

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,gssapi-with-mic,password

debug1: Next authentication method: gssapi-with-mic

debug1: Unspecified GSS failure.  Minor code may provide more information

No credentials cache found

debug1: Unspecified GSS failure.  Minor code may provide more information

No credentials cache found

debug1: Unspecified GSS failure.  Minor code may provide more information

No credentials cache found

debug1: Next authentication method: publickey

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

debug1: Offering public key: /home/grid/.ssh/id_rsa

debug1: Authentications that can continue: publickey,gssapi-with-mic,password

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

debug1: Authentications that can continue: publickey,gssapi-with-mic,password

debug1: Next authentication method: password

debug1: read_passphrase: can't open /dev/tty: Permission denied

debug1: Authentications that can continue: publickey,gssapi-with-mic,password

Permission denied, please try again.

debug1: read_passphrase: can't open /dev/tty: Permission denied

debug1: Authentications that can continue: publickey,gssapi-with-mic,password

Permission denied, please try again.

debug1: read_passphrase: can't open /dev/tty: Permission denied

debug1: Authentications that can continue: publickey,gssapi-with-mic,password

debug1: No more authentication methods to try.

Permission denied (publickey,gssapi-with-mic,password).

问题原因及解决办法

经过多方面排查，问题最后发现为/dev/tty的权限问题

机器上的权限为660，而该操作需要666

解决方法
chmod 666 /dev/tty