Hadoop伪分布式集群在启动时遇到Permission denied (publickey,gssapi-keyex,gssapi-with-mic

1.修改sshd_config文件

vi /etc/ssh/sshd_config       //开启以下内容

HostKey /etc/ssh/ssh_host_rsa_key
RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile      .ssh/authorized_keys

重启sshd服务：systemctl restart sshd

2.创建**

ssh-****** -t rsa

cat id_rsa.pub >> authorized_keys

3.修改权限

chown -R hadoop:hadoop /home/hadoop

chmod 700 /home/hadoop

chmod 700 /home/hadoop/.ssh

chmod 644 /home/hadoop/.ssh/authorized_keys       //公钥文件的权限

chmod 600 /home/hadoop/.ssh/id_rsa             //私钥文件的权限