SSH登陆无权限的一种情况
万恶的hadoop,在有老师的指导书下还出现了各种各样的错误。
在第一版启动hadoop没有权限后,我开始了第二次尝试。这次我为区分各台虚拟机将用户名又初版的 wxy 改成了各自的主机名,结果在装ssh时出现了这个错误
[master@master .ssh]$ ssh-copy-id -i ~/.ssh/id_rsa.pub master@slave2 /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/home/master/.ssh/id_rsa.pub" /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys master@slave2's password: Permission denied, please try again. master@slave2's password: Permission denied, please try again. master@slave2's password: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
一直提示 Permission denied, please try again. 尽管我密码正确。
[master@master .ssh]$ ssh-copy-id -i ~/.ssh/id_rsa.pub master@slave2
加粗的部分为slave2的用户名和主机名,应该为 slave2@slave2 ,再运行命令即可
[master@master .ssh]$ ssh-copy-id -i ~/.ssh/id_rsa.pub slave2@slave2 /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/home/master/.ssh/id_rsa.pub" /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys slave2@slave2's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'slave2@slave2'" and check to make sure that only the key(s) you wanted were added.
输入密码,成功执行。
注意 "ssh 'slave2@slave2'" ,他会提示如何用ssh连接slave2,如果你直接 ssh slave2 还是会报错
[master@master .ssh]$ ssh slave2 master@slave2's password: Permission denied, please try again. master@slave2's password: Permission denied, please try again. master@slave2's password: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
而使用 ssh 'slave2@slave2' 则能正常免密登陆。
[master@master .ssh]$ ssh 'slave2@slave2' Last login: Wed Oct 20 04:27:04 2021 [slave2@slave2 ~]$ ifconfig ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.18.132 netmask 255.255.255.0 broadcast 192.168.18.255
经查ip确定为slave2,问题解决!
如果问题解决了,如果你在装Hadoop,那么快跑!重建用户名,重新操作!
网上有不同用户名的登录教程,但是我看不懂,所以我选择直接重装......
看到这篇文章的可以试一下这个办法,不行的话就是配置文件和密码的错误了,可以留言一起讨论。