shell批量免祕鑰登陸

注意：ip.txt和send_ssh_key.sh必須在同一根目錄下

# 根據如下格式寫入服務器信息ip.txt，用於免密鑰登陸
#-----------
# ip:password
#192.168.1.110:7758521
#192.168.1.111:7758521
#192.168.1.112:7758521
#-----------

#!/bin/bash
# 生成ssh key
if [[ ! -f "/root/.ssh/id_rsa" ]];then
  echo "gen ssh key"
  ssh-keygen -t rsa -b 2048 -N '' -f /root/.ssh/id_rsa
fi
# 檢測是否安裝了 expect
if ! expect -v &>/dev/null;then
  echo "install expect"
  yum install expect -y
fi
# 循環文件中的ip
for p in $(cat ip.txt|grep -v '#');do
  ip=$(echo "$p"|cut -f1 -d":")       # 取出當前IP
  password=$(echo "$p"|cut -f2 -d":") # 取出當前密碼
  # expect 交互過程
  expect -c "
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@$ip
        expect {
                \"*yes/no*\" {send \"yes\r\"; exp_continue}
                \"*password*\" {send \"$password\r\"; exp_continue}
                \"*Password*\" {send \"$password\r\";}
        }
"