ssh_互信 简洁实例__代码

ssh连接远程主机时候询问密码，跟su、sudo命令的默认行为一样，是不从stdin读入数据的，据称是为安全考虑，但是有时候在脚本当中确实需要无人守值的登陆
简介简单的方式写一段代码，描述思路；

参见create_ssh.sh脚本实例：

#!/bin/bash# Destription: Creating a trust relationship between the host1-to-host2# parameters : sh create_ssh.sh 128.128.128.1 Password# Auther     : xxxxxxx# Date       : 2015-5-13remote_ip=$1remote_Password=$2ping_total=$(ping -c 2 $remote_ip | grep -c "64 bytes from";)if [ $# -ne 2 ]; then    echo "Usage:"    echo "$0 remote_ip remote_Password "    exit 1fi#===========================keyfunction make_ssh_key(){  echo  y|ssh-keygen  -t  rsa -P '' -f /root/.ssh/id_rsa   >/dev/null 2>&1;  echo -e "\\033[1;32m `date +%Y-%m-%d\ %H:%M:%S` Now runing make_ssh_key  \\033[1;37m"}#===========================scpfunction copy_key(){  if [ $ping_total == 2 ]; then   expect -c "   set timeout 2      spawn ssh-copy-id -i  /root/.ssh/id_rsa $remote_ip        expect {           \"*Password*\" { send \"$remote_Password\r\" }        }         set timeout 3      expect eof      "         echo -e "\\033[1;32m `date +%Y-%m-%d\ %H:%M:%S` successfully to ssh $remote_ip \\033[1;37m"      else        echo -e "\\033[1;32m `date +%Y-%m-%d\ %H:%M:%S` Destination Host Unreachable $remote_ip \\033[1;37m"        exit 1     fi}#===========================sshfunction ssh_Test(){   if [ $ping_total == 2 ]; then     ssh -i /root/.ssh/id_rsa $remote_ip    else        echo -e "\\033[1;32m `date +%Y-%m-%d\ %H:%M:%S` connect to host $remote_ip port 22: No route to host \\033[1;37m"        exit 1     fi}make_ssh_key $@copy_key $@ssh_Test $@exit 0