实现批量key验证

基于sshpass

在hosts.list 文件中提前写好需要key验证的机器IP

[root@centos8 ~]# cat hosts.list
10.0.0.1
10.0.0.2
10.0.0.3

#!/bin/bash
exec 1> /dev/null
rpm -q sshpass || yum -y install sshpass
[ -f /root/.ssh/id_rsa ] || ssh-keygen -t rsa -P '' -f /root/.ssh/id_rsa &> /dev/null
while read IP
do
    sshpass -p 123456 ssh-copy-id -o StrictHostKeyChecking=no $IP
done < hosts.list

也可以将需要key验证机器的IP存入变量中

#!/bin/bash
exec 1> /dev/null
 
IPLIST="
10.0.0.1
10.0.0.2
10.0.0.3
"
rpm -q sshpass || yum -y install sshpass
[ -f /root/.ssh/id_rsa ] || ssh-keygen -t rsa -P '' -f /root/.ssh/id_rsa &> /dev/null
for IP in $IPLIST
do
    sshpass -p 123456 ssh-copy-id -o StrictHostKeyChecking=no $IP
done

基于expect

#!/bin/bash

rpm -q expect &> /dev/null || yum -y install expect &> /dev/null

[ -f /root/.ssh/id_rsa ] || ssh-keygen -t rsa -P '' -f /root/.ssh/id_rsa &> /dev/null

PASS=123456

while read IP
do
    expect &> /dev/null <<EOF  # 或者expect << EOF &> /dev/null
    set timeout 20
    spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@$IP
    expect {
        "yes/no" { send "yes
";exp_continue }
        "password" { send "$PASS" }
    }
    expect eof
EOF
    echo "$IP is ready"
done < hosts.list