1、配置ip并修改主机名
sudo vi /etc/hostname
2、主机名解析
sudo vi /etc/hosts
scp hosts hadoop@datanode1:/etc
scp hosts hadoop@datanode2:/etc
scp hosts hadoop@datanode3:/etc
3、关闭防火墙
sudo ufw disable
4、免密码登陆
cd /home/hadoop
sudo mkdir .ssh
cd .ssh
ssh-keygen -t rsa
cp id_rsa.pub authorized_keys
5、同步公钥文件
scp authorized_keys hadoop@datanode1:/home/hadoop/.ssh
scp authorized_keys hadoop@datanode1:/home/hadoop/.ssh
scp authorized_keys hadoop@datanode1:/home/hadoop/.ssh
Ubuntu15中安装hadoop2.7单机模式：http://www.linuxdiyf.com/linux/13027.html
ubuntu15.04安裝hadoop2.6.0及eclipse开发环境配置：http://www.linuxdiyf.com/linux/12474.html
Ubuntu15.04单机/伪分布式安装配置Hadoop与Hive试验机：http://www.linuxdiyf.com/linux/11858.html
Ubuntu下安装Hadoop（单机版）：http://www.linuxdiyf.com/linux/11372.html