一:ssh免密登录:
1)vim /etc/ssh/sshd_config去掉注释或添加
RSAAuthentcation yes
PubkeyAuthentication yes
2)生成密钥:
ssh-keygen -t rsa
3)复制到公钥中:
cp /root/.ssh/id_rsa.pub /root/.ssh/authorized_keys
4)将密钥复制到目标服务器:
ssh-copy-id 目标服务器ip
5)编辑hosts对应文件:
vim /etc/hosts
6)测试:
ssh 目标服务器hostname或者ip
二:安装JDK
三:安装hadoop:
1)下载hadoop:
wget http://www.apache.org/dyn/closer.cgi/hadoop/common/hadoop-3.0.3/hadoop-3.0.3-src.tar.gz
2)解压安装:
cp /root/hadoop-3.0.3-src.tar.gz /usr/local/hadoop/
cd /usr/local/hadoop
tar -zxvf hadoop-3.0.3-src.tar.gz