最近抛弃非ssh连接的hadoop集群部署方式了,还是回到了用ssh key 验证的方式上了。这里面就有些麻烦,每台机器都要上传公钥。恰恰我又是个很懒的人,所以写几个小脚本完成,只要在一台机器上面就可以做公钥的分发了。

首先是生成ssh key脚本

#!/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,但是一般都是三个回车过去了,我懒的输入,加上-P ”就不用了。

然后是添加公钥到从节点的脚本

#!/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"

 

然后是第三个脚本读取主机列表然后把/etc/hosts复制到所有主机上

#!/bin/sh
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

 

不解释了

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