1.生成公鑰

[root@hadoop000 ~]# rm -rf ~/.ssh
[root@hadoop000 ~]# ssh-keygen
[root@hadoop001 ~]# rm -rf ~/.ssh
[root@hadoop001 ~]# ssh-keygen

2.選擇第一臺作為先完善的機器

[root@hadoop000 .ssh]# cat id_rsa.pub >> authorized_keys
將本機公鑰輸出到authorized_keys中

3.其他機器將id_rsa.pub發送給第一臺

[root@hadoop001 .ssh]# scp id_rsa.pub  192.168.137.251:/root/.ssh/id_rsa.pub.hadoop001
 

4.將其他機器的id_rsa.pub追加到authorized_keys

[root@hadoop000 .ssh]# cat id_rsa.pub.hadoop001 >> authorized_keys

5.然後將該authorized_keys分發

[root@hadoop000 .ssh]# scp authorized_keys 192.168.137.141:/root/.ssh/

每臺機器第一次ssh跳轉其他機器都需輸入yes 目的 --> known_hosts
之後再登錄其他機器就無需密碼了。

ssh兩臺機器配置互相信任關系