hadoop用ssh key 验证的方式script

#!/bin/sh

ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa

cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys

ssh-keygen一般来说需要输入passphrase，三个回车过去了，加上-P ''就不用了。

#!/bin/sh

read -p "输入远端服务器IP: " ip

ssh-copy-id -o StrictHostKeyChecking=no -i ~/.ssh/id_rsa.pub root@$ip

ssh root@$ip 'sed -i "s/^#RSAAuthentication\ yes/RSAAuthentication\ yes/g" /etc/ssh/sshd_config'

ssh root@$ip 'sed -i "s/^#PubkeyAuthentication\ yes/PubkeyAuthentication yes/g" /etc/ssh/sshd_config'

ssh root@$ip 'sed -i "s/^#PermitRootLogin\ yes/PermitRootLogin\ yes/g" /etc/ssh/sshd_config'

ssh root@$ip 'service sshd restart'

hostname=`ssh root@${ip} 'hostname'`

echo "添加主机名和IP到本地/etc/hosts文件中"

echo "$ip    $hostname" >> /etc/hosts

echo "远端主机主机名称为$hostname, 请查看 /etc/hosts 确保该主机名和IP添加到主机列表文件中"

echo "主机公钥复制完成"

#!/bin/sh

# 读取主机列表然后把/etc/hosts复制到所有主机上

cat /etc/hosts | while read LINE

do

   ip=`echo $LINE | awk '{print $1}' | grep -v "::" | grep -v "127.0.0.1"`

   echo "Copying /etc/hosts to ${ip}"

   scp -o StrictHostKeyChecking=no /etc/hosts root@${ip}:/etc/

done