Hadoop ssh免密登录配置

一、在每个节点生成公钥和私钥，并拷贝

1、Hadoop100:

         生成公钥和私钥

[[email protected]] ssh-keygen -t rsa

         然后敲（三个回车）

         将公钥拷贝到要免密登录的目标机器上

[[email protected]] ssh-copy-id hadoop100

[[email protected]] ssh-copy-id hadoop101

[[email protected]] ssh-copy-id hadoop102

2、Hadoop101:

         生成公钥和私钥

         [[email protected]] ssh-keygen -t rsa

         然后敲（三个回车）

         将公钥拷贝到要免密登录的目标机器上

[[email protected]] ssh-copy-id hadoop100

[[email protected]] ssh-copy-id hadoop101

[[email protected]] ssh-copy-id hadoop102

3、Hadoop102:

        生成公钥和私钥

        [[email protected]] ssh-keygen -t rsa

        然后敲（三个回车）

        将公钥拷贝到要免密登录的目标机器上

        [[email protected]] ssh-copy-id hadoop100

        [[email protected]] ssh-copy-id hadoop101

        [[email protected]] ssh-copy-id hadoop102