环境

Centos7 - 1台虚拟机
hadoop-3.2.1
OpenJDK1.8.0_181
root用户 - 伪分布式

按照官网步骤启动hadoop后，无法访问页面

我这里遇到的是linux防火墙问题，学习阶段建议关闭防火墙，避免在不必要的问题上浪费精力

systemctl status firewalld.service #查看防火墙状态 centos7
systemctl disable firewalld.service #禁止开机启动
systemctl stop firewalld.service #关闭防火墙

[root@ip10 hadoop-3.2.1]# systemctl status firewalld.service 
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
   Active: active (running) since 日 2020-05-17 20:15:27 CST; 47min ago
     Docs: man:firewalld(1)
 Main PID: 7397 (firewalld)
    Tasks: 2
   CGroup: /system.slice/firewalld.service
           └─7397 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid

5月 17 20:15:26 ip10 systemd[1]: Starting firewalld - dynamic firewall daemon...
5月 17 20:15:27 ip10 systemd[1]: Started firewalld - dynamic firewall daemon.
[root@ip10 hadoop-3.2.1]# systemctl disable firewalld.service 
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@ip10 hadoop-3.2.1]# systemctl stop firewalld.service

至此问题解决

如果没有解决，请出门左转

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