Hadoop安装

Hadoop安装

1.修改本机host，设置域名

    0-1).vi /etc/hosts

     192.168.128.138 yyl.hadoop

    1). vi /etc/sysconfig/network

          修改内容：

          NETWORKING=yes
          HOSTNAME=yyl.hadoop

    2). hostname yyl.hadoop

 

2.SSH免密码登陆

yum -y install openssh-clients

su hadoop

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

cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

chmod 600 ~/.ssh/authorized_keys 

chmod 700 ~/.ssh/