配置Hadoop ssh 无密码登录时 遇到的问题

配置Hadoop遇到的问题 permission denied (publickey,gssapi-keyex,gssapi-with-mic,password)

1.update /etc/ssh/sshd_config 确保一下的 属性被打开

RSAAuthentication yes

PubkeyAuthentication yes

AuthorizedKeysFile .ssh/authorized_keys

2.文件和文件夹的权限设置

# mkdir /home/yourUser/.ssh

# chown -R yourUser:yourUser /home/yourUser

# chmod 700 /home/yourUser

# chmod 700 /home/yourUser/.ssh

# chmod 644 /home/yourUser/.ssh/authorized_keys //公钥文件的所有权限

# chmod 600 /home/yourUser/.ssh/id_rsa //私钥文件的所有权限

3.实在不行就这样

[root@SERVER~#] mkdir /etc/ssh/yourUser

[root@SERVER~#] cp /home/yourUser/.ssh/authorized_keys /etc/ssh/yourUser/

[root@SERVER~#] chown -R yourUser:yourUser /etc/ssh/yourUser

[root@SERVER~#] chmod 755 /etc/ssh/yourUser

[root@SERVER~#] chmod 644 /etc/ssh/yourUser/authorized_keys

[root@SERVER~#] vi /etc/ssh/sshd_config

#RSAAuthentication yes

#PubkeyAuthentication yes

# changed .ssh/authorized_keys to /etc/ssh/yourUser/authorized_keys <<<<<<<

AuthorizedKeysFile /etc/ssh/yourUser/authorized_keys

#AuthorizedKeysCommand none

#AuthorizedKeysCommandRunAs nobody

4.另外检查生成 id_keys and id_pubs 时采用的算法是是否是rsa，有些系统好像要求必须是rsa