一个shell脚本实现linux集群所有机器免密钥登录

#!/bin/bash
SERVERS="flux01 flux02 flux03 flux04 flux05  flux06  flux07  flux08  flux09"
PASSWORD=root
auto_ssh_copy_id() {
expect -c "set timeout -1;
spawn ssh-copy-id $1;
expect {
*(yes/no)* {send -- yes\r;exp_continue;}
*assword:* {send -- $2\r;exp_continue;}
eof        {exit 0;}
}";
}

ssh_copy_id_to_all() {
for SERVER in $SERVERS
do
auto_ssh_copy_id $SERVER $PASSWORD
done
}

ssh_copy_id_to_all