Linux批量配置ssh免密(实战篇)

安装依赖

sudo yum install expect

相关脚本

#!/bin/bash
if [ ! -f ~/.ssh/id_rsa ];then
 ssh-keygen -t rsa
else
 echo "id_rsa has created ..."
fi
 
while read line
  do
    ip=`echo $line | cut -d " " -f 1`
    user="bigdata"
    passwd="xxx"
    expect <<EOF
      set timeout 10
      spawn ssh-copy-id -i /home/bigdata/.ssh/id_rsa.pub $user@$ip
      expect {
        "yes/no" { send "yes\n";exp_continue }
        "password" { send "$passwd\n" }
      }
      expect "password" { send "$passwd\n" }
EOF
  done <  hostlist.txt

对应机器文件

vim hostlist.txt

bigdata1
bigdata2
bigdata3
bigdata4
bigdata5
bigdata10
bigdata11
bigdata12
bigdata13
bigdata14