主机hadoop101
1.把全部主机.ssh全部删除自带的.ssh
2.ssh-keygen -t rsa
3.ssh-coip-id hadoop101
4.ssh-coip-id hadoop102
4.ssh-coip-id hadoop103
主机hadoop102
1.ssh-coip-id hadoop101
2.ssh-coip-id hadoop102
3.ssh-coip-id hadoop103
主机hadoop103
1.ssh-coip-id hadoop101
2.ssh-coip-id hadoop102
3.ssh-coip-id hadoop103
