1.修改namenode節(jié)點 /etc/hosts 文件
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.43.130 master
172.16.43.131 salve1
172.16.43.132 salve2
2.關(guān)閉防火墻
CentOS 7.0默認(rèn)使用的是firewall作為防火墻
查看防火墻狀態(tài)
firewall-cmd --state【state前面兩個“-”】
停止firewall【臨時】
systemctl stop firewalld.service
禁止firewall開機(jī)啟動【永久】
systemctl disable firewalld.service
3.初始化節(jié)點
./bin/hadoop namenode -format
4.啟動Hadoop集群
