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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/

Hadoop安装