oracle 11g r2 rac ssh两节点互信对等配置Permission denied (publickey,gssapi-with-mic,passw

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问题：安装oracle 11g r2 RAC grid 时，配置两节点ssh互信对等配置不成功,具体错误信息如下：
------------------------------------------------------------------------
Verifying SSH connectivity has been setup from rac1 to rac1
------------------------------------------------------------------------
IF YOU SEE ANY OTHER OUTPUT BESIDES THE OUTPUT OF THE DATE COMMAND OR IF YOU ARE PROMPTED FOR A PASSWORD HERE, IT MEANS SSH SETUP HAS NOT BEEN SUCCESSFUL.
grid@rac1's password:
Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,gssapi-with-mic,password).
------------------------------------------------------------------------

配置ssh对等的时候的运用脚本如下：
./sshUserSetup.sh -user grid -hosts "rac1 rac2" -advanced -exverify -confirm -noPromptPassphrase

环境为 oracle linux 5.5,RAC两节点的主机名为：rac1 rac2。
原始配置/etc/ssh/sshd_config文件为：

# This sshd was compiled with PATH=/usr/local/bin:/bin:/usr/bin

# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented.  Uncommented options change a
# default value.

#Port 22
#Protocol 2,1
Protocol 2
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::

# HostKey for protocol version 1
#HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
#HostKey /etc/ssh/ssh_host_rsa_key
#HostKey /etc/ssh/ssh_host_dsa_key

# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 1h
#ServerKeyBits 768

# Logging
# obsoletes QuietMode and FascistLogging
#SyslogFacility AUTH
SyslogFacility AUTHPRIV
#LogLevel INFO

# Authentication:

#LoginGraceTime 2m
#PermitRootLogin yes
#StrictModes yes
#MaxAuthTries 6

#RSAAuthentication yes
#PubkeyAuthentication yes
#AuthorizedKeysFile     .ssh/authorized_keys

# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
#RhostsRSAAuthentication no
# similar for protocol version 2
#HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
# RhostsRSAAuthentication and HostbasedAuthentication
#IgnoreUserKnownHosts no
# Don't read the user's ~/.rhosts and ~/.shosts files
#IgnoreRhosts yes
# To disable tunneled clear text passwords, change to no here!
#PasswordAuthentication yes
#PermitEmptyPasswords no
PasswordAuthentication yes

# Change to no to disable s/key passwords
#ChallengeResponseAuthentication yes
ChallengeResponseAuthentication no

# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken no

# GSSAPI options
#GSSAPIAuthentication no
GSSAPIAuthentication yes
#GSSAPICleanupCredentials yes
GSSAPICleanupCredentials yes

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication mechanism.
# Depending on your PAM configuration, this may bypass the setting of
# PasswordAuthentication, PermitEmptyPasswords, and
# "PermitRootLogin without-password". If you just want the PAM account and
# session checks to run without PAM authentication, then enable this but set
# ChallengeResponseAuthentication=no
#UsePAM no
UsePAM yes
解决方案：
根据错误提示“Permission denied (publickey,gssapi-with-mic,password).“
于是打开/etc/ssh/sshd_config配置文件，将上述标红的配置修改

#RSAAuthentication yes

PubkeyAuthentication yes

AuthorizedKeysFile     .ssh/authorized_keys

启用publickey认证，同时必须保证PasswordAuthentication yes必须yes状态。

重启ssh服务

service sshd restart

然后再运行脚本，

./sshUserSetup.sh -user grid -hosts "rac1 rac2" -advanced -exverify -confirm -noPromptPassphrase

ssh 对等互信配置成功