rac中ssh信任设置代码示例及scp命令用法

以oracle用户身份执行，在所有节点上做如下配置以生成SSH密钥.

$ mkdir ~/.ssh
$ chmod 755 ~/.ssh
$ /usr/bin/ssh-keygen -t rsa
$ /usr/bin/ssh-keygen -t dsa
$ touch ~/.ssh/authorized_keys

[oracle@rac1.localdomain .ssh]$ ssh rac1.localdomain cat /home/oracle/.ssh/id_rsa.pub >> authorized_keys
　　oracle@rac1.localdomain’s password:
　　[oracle@rac1.localdomain .ssh]$ ssh rac1.localdomain cat /home/oracle/.ssh/id_dsa.pub >> authorized_keys
　　[oracle@rac1.localdomain .ssh$ ssh rac2.localdomain cat /home/oracle/.ssh/id_rsa.pub >> authorized_keys
　　oracle@rac2.localdomain’s password:
　　[oracle@rac1.localdomain .ssh$ ssh rac2.localdomain cat /home/oracle/.ssh/id_dsa.pub >>authorized_keys
　　oracle@rac2.localdomain’s password:

　　7. Use scp to copy the authorized file to other nodes in ~/.ssh
　　[oracle@rac1.localdomain .ssh]scp authorized_keys rac2.localdomain:/home/oracle/.ssh/

　　8. Change the permissions on the oracle user’s authorized file on all cluster nodes
　　$ chmod 600 ~/.ssh/authorized_keys

　　9. Enable OUI to use ssh and scp
　　$ exec /usr/bin/ssh-agent $SHELL
　　$ /usr/bin/ssh-add

　　10. Verify ssh configuration on all nodes
　　$ ssh rac1.localdomain date
　　$ ssh rac2.localdomain date