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

在开启hadoop时候报错：localhost: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).

此时 ssh localhost也会失败
原因是秘钥没有给自己，
运行ssh-copy-id -i /home/hadoop/.ssh/id_rsa.pub hadoop@localhost即可解决。

来源：CSDN

作者：Mr_Lon

链接：https://blog.csdn.net/Mr_Lon/article/details/88198119