Password Configuration is not required for scp distribution in Linux.

For Linux distribution scp, you do not need to enter the password configuration-Linux Enterprise Application-Linux server application information. For details, see the following. First, execute the Command Script on each node.

Mkdir-p ~ /. Ssh
Chmod 700 ~ /. Ssh

/Usr/bin/ssh-keygen-t rsa

Then on the host that needs to be distributed in batches
Touch ~ /. Ssh/authorized_keys
Ssh 192.168.1.20 cat ~ /. Ssh/id_rsa.pub> ~ /. Ssh/authorized_keys

Note: 192.168.1.20 is the IP address of the distribution host.

The authenticity of host 'linux1 (192.168.1.100) 'can't be established.
RSA key fingerprint is 2f: cc: a1: 4f: 2b: 67: 01: 6a: d1: 9e: 0b: AB: c8: 9e: 57: a1.
Are you sure you want to continue connecting (yes/no )? Yes
Warning: Permanently added 'linux1, 192.168.1.100 '(RSA) to the list of known hosts.
Oracle @ linux1's password: xxxxx

Run
Chmod 600 ~ /. Ssh/authorized_keys

Verify on the distribution host

Ssh 192.168.1.19 hostname
RS9

Common scp. sh files on distribution hosts
Distribute files from the distribution host 192.168.1.20 to 192.168.1.19 and 192.168.1.10
Scp-r/usr/local/adsit/webapps/preroll/WEB-INF/classes root@192.168.1.19:/home/adsit/
Scp-r/usr/local/adsit/webapps/preroll/WEB-INF/classes root@192.168.1.10:/home/adsit/

Run scp. sh on the distribution host to implement the copy function.