ssh localhost “Permission denied (publickey)

再次遇到 SSH Server And “Permission denied (publickey)

首先，我们要确定ssh 已经设置过了，并且成功了
遇到上述问题，是在我启动在伪分布式hadoop集群下执行的所有命令时，每次都要求输入密码，之前还是好好的，每次登录不需要密码

所以，我就回忆，哪里出错了，后来，想了想，可能是我一次把/home/下的文件权限全都递归修改为777了～～

到底是不是，权限乱改的问题呢，我们要找证据。

看执行日志，所以我们要学会善于查看日志～～

    $ grep sshd /var/log/auth.log  

Authentication refused: bad ownership or modes for file /home/zeq9069/.ssh/authorized_key

原因很清楚了。是目录权限不对。

方法是：

Fixing Authentication refused: bad ownership or modes for directoryFrom HowToGeekIf you get this error in your logs when trying to setup public key authenticated automatic logins, the problem is a permissions one.You’ll need to perform the following commands on the user account you are trying to setup:

    chmod go-w ~/
    chmod 700 ~/.ssh
    chmod 600 ~/.ssh/authorized_keys

OK～～～设置完，hadoop命令运行不在需要每次输入密码确认了！

参考：blog.youkuaiyun.com/hanhuili/article/details/11055293