配置三台Linux虚拟机环境
一、配置Linux环境
1、配置域名映射
192.168.159.151 snode01 snode01.hadoop.com
192.168.159.152 snode02 snode02.hadoop.com
192.168.159.153 snode03 snode03.hadoop.com
2、关闭防火墙和SELinux
①、关闭防火墙
systemctl stop firewalld
systemctl disable firewalld
systemctl status firewalld
防火墙说明
Centos7 中默认将原来的防火墙 iptables 升级为了 firewall