Ambari学习19_ssh 公钥认证报错：Permission denied (publickey,gssapi-keyex,gssapi-with-mic).解决2_ambari permission denied (publickey,gssapi-keyex,g-优快云博客

本文介绍了解决Ambari集群中SSH连接问题的方法，通过在各主机上配置DSA类型的SSH密钥实现免密码登录，包括密钥的生成、分发及authorized_keys文件的更新。

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在Ambari学习6中，我们介绍了一种解决这个问题的方法，但是，后来又出现了新的问题，经常查找资料，最终找到解决方案：

down voteaccepted

I encountered the same problem with him.

ssh -i <your_keypair> root@<your_host> I tried this but it wasn't solved.

Here's my solution

host1 ip:192.168.1.21

host2 ip:192.168.1.22

host3 ip:192.168.1.23

on host1:

rm -rf /root/.ssh
ssh-keygen -t dsa
cat /root/.ssh/id_dsa.pub >> /root/.ssh/authorized_keys
scp /root/.ssh/id_dsa.pub host2:/root/
scp /root/.ssh/id_dsa.pub host3:/root/

on host2:

rm -rf /root/.ssh
ssh-keygen -t dsa
cat /root/id_dsa.pub >> /root/.ssh/authorized_keys

on host3:

rm -rf /root/.ssh
ssh-keygen -t dsa
cat /root/id_dsa.pub >> /root/.ssh/authorized_keys

host1:/root/.ssh/id_dsa This's the file which you need.

过程如上，主要区别是：ssh-keygen -t dsa；

即dsa和rsa的区别。

参考资料：

http://stackoverflow.com/questions/31010016/permission-denied-publickey-gssapi-keyex-gssapi-with-mic-password-during-ambar