#!/bin/bash
#====================================================
# Author: Mr.Song
# Create Date: 2021-04-06
# Description: 集群自动免密，适用于集群初始化
# Notice:	只适用于centos系列
#====================================================
username=michael
test_file="/path/to/test/file"
host_list="/path/to/all-host.txt"
#notice dest_dir end do not include /,may cause expect cat not understand directory
dest_dir="/root"
password="xxx"


function allscp()
{
	cat $host_list | while read line
	do
	host_ip=`echo $line | awk '{print $1}'`
	expect_test $1
	done
}

#expect function
function expect_test
{
	expect <<- EOF
	set src_file [lindex $argv 0]
	set timeout 50
	spawn scp  -r $1  $username@$host_ip:$dest_dir
	expect {
	"(yes/no)?"
	{
		send "yes\n";exp_continue
		expect "*assword:" {send "$password\n"}
	}
	"*assword:"
	{
		send "$password\n"
	}
	}
	expect eof
	#notice <<- only support tab before EOF,do not support space,paste may cause problems
	EOF
}


if ! rpm -qa|grep expect; then
	echo "expect not installed,please install first."
	exit 1
else
	touch $test_file
	ssh-keygen -t rsa  -N  "" -f  ~/.ssh/id_rsa
	mv  ~/.ssh/id_rsa.pub  ~/.ssh/authorized_keys
	#in order to add every host's fingerprint to ~/.ssh/know_hosts,first meet all hosts 
	allscp  $test_file
	#copy rsa
	allscp  ~/.ssh
fi