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  • 从零搭建hadoop集群之系统管理操作

    1. 配置主机名

    [root@hadoop01 ~]# hostname    #显示当前主机名

    方法一:通过配置文件/etc/hostname (重启后生效)

    [root@hadoop01 ~]# vim /etc/hostname

    方法二:通过命令hostnamectl  set-hostname    新主机名(会自动把主机名改为小写)

    [root@hadoop01 ~]# hostnamectl set-hostname hadoop01

    2. 添加内网域名映射

    [root@hadoop01 ~]# vim /etc/hosts

     3. 关闭防火墙

    启动: systemctl start firewalld
    关闭: systemctl stop firewalld
    查看状态: systemctl status firewalld 
    开机禁用  : systemctl disable firewalld
    开机启用  : systemctl enable firewalld

    4. 关闭SELINUX

    [root@hadoop01 ~]# vim /etc/selinux/config


    # This file controls the state of SELinux on the system.
    # SELINUX= can take one of these three values:
    # enforcing - SELinux security policy is enforced.
    # permissive - SELinux prints warnings instead of enforcing.
    # disabled - No SELinux policy is loaded.
    SELINUX=disabled #修改为 disabled
    # SELINUXTYPE= can take one of three values:
    # targeted - Targeted processes are protected,
    # minimum - Modification of targeted policy. Only selected processes are protected.
    # mls - Multi Level Security protection.
    SELINUXTYPE=targeted

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  • 原文地址:https://www.cnblogs.com/qikaipei/p/14122467.html
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