1、生成密钥，创建脚本目录，具体不贴图了
[root@n0 sshcopy]#
[root@n0 sshcopy]# pwd
/root/sshcopy
[root@n0 sshcopy]# ll
total 8
-rwxr-xr-x. 1 root root 360 Aug 19 02:23 ssh.exp
-rwxr-xr-x. 1 root root 199 Aug 19 02:46 sshkey.sh
[root@n0 sshcopy]#
2、编辑免密脚本
[root@n0 sshcopy]# cat ssh.exp
#!/usr/bin/expect
set timeout 10
set user_hostname [lindex $argv 0]
set password [lindex $argv 1]
spawn ssh-copy-id $user_hostname
expect {
“(yes/no)?”
{
send “yes\n”
expect “*password: ” { send “$password\n” }
}
“*password: ” { send “$password\n” }
}
expect eof
3、调用免密脚本，注意文件路径按自己的情况进行更改
[root@n0 sshcopy]# cat ssh
ssh.exp sshkey.sh
[root@n0 sshcopy]# cat sshkey.sh
#!/bin/bash
ip=`echo -n “n1,n2,n3,n4” | xargs -d “,” -i echo {}`
password=”123456″
for i in $ip;do
/root/sshcopy/ssh.exp root@$i $password $ >> /root/sshcopy/out.log
ssh root@$i “echo $i ok”
done
[root@n0 sshcopy]#
4、验证
[root@n0 sshcopy]# ll
total 8
-rwxr-xr-x. 1 root root 360 Aug 19 02:23 ssh.exp
-rwxr-xr-x. 1 root root 199 Aug 19 02:46 sshkey.sh
[root@n0 sshcopy]# ./sshkey.sh
n1 ok
n2 ok
n3 ok
n4 ok
[root@n0 sshcopy]#
[root@n0 sshcopy]# ssh n1
Last login: Mon Aug 19 14:53:13 2019 from 10.1.24.232
[root@n1 ~]# exit
logout
Connection to n1 closed.
[root@n0 sshcopy]# ssh n2
Last login: Mon Aug 19 02:13:50 2019 from 10.1.24.232
[root@n2 ~]# exit
logout
Connection to n2 closed.
[root@n0 sshcopy]#