标签:
因为要安装hadoop所以需要设置ssh无密码登录,SSH的安装就不在这里介绍了:
我的系统是ubuntu15.10,开始按照网上很多的步骤去配置,最后发现登录时还要密码,登录多次也是这样的情况
最后在网上搜素很多资料解决了这个问题。因此记录下来,看看能否帮助也遇到这样问题的同学。
下面介绍具体配置步骤:
hadoop@master:~$ ssh-keygen -t rsa
此命令是生成公私密钥的,然后有提示你保存这些密钥的路径,直接回车,默认的路径就行(~/.ssh,这个路径是默认的)
然后输入密码。也可以直接回车用空密码,然后确认。如下图所示(网上找的图):
authorized_keys和known_hosts文件开始是没有的
![技术分享](data:image/png;base64,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)
将生成的公钥加到授权文件authorized_keys中,这个文件一开始是没有的,运行命令之后会自动生成。
因为我是配置在单机上的,所以后面也是用我自己的机器即:hadoop@master hadoop是用户名,master是主机名
(我之前配置的时候没有 加这一步骤,最后就没成功,如果你也是这种情况,加上这一步试试)
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原文地址:http://www.cnblogs.com/renhq/p/5316273.html