大数据-Linux(CentOS 7)-基础配置-网络设置

基础配置

设置虚拟机网络为NET

虚拟机中虚拟网络相当于路由器,连接虚拟机与主机中的网络

所以此时主机与虚拟机要使用的网络为:

• 子网:192.168.80.0
• 子网掩码:255.255.255.0
• 网关:192.168.80.2

主机网络配置

VMware Virtual Ethernet Adapter for VMnet8 为主机的一个网卡,用来与虚拟机进行网络通信

• IPv4 地址: 192.168.80.9
• IPv4 子网掩码: 255.255.255.0
• IPv4 默认网关: 192.168.80.2

虚拟机网络配置

修改配置 vi /etc/sysconfig/network-scripts/ifcfg-eth0

ONBOOT=yes
NAME=master
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=none
IPADDR=192.168.80.10
PREFIX=24
GATEWAY=192.168.80.2
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
UUID=c9bb2860-9481-3411-9931-3a0c4abb2a11
AUTOCONNECT_PRIORITY=-999
HWADDR=00:0C:29:3D:AE:9A

重启网络服务

sudo systemctl restart network

修改Linux主机名

# 设置主机名 使用这个命令会立即生效且重启也生效
hostnamectl set-hostname master
# 查看主机名
[hadoop@localhost ~]$ hostname
master
# 修改主机名和IP的映射关系
[hadoop@localhost ~]$ vi /etc/hosts
192.168.80.10 master

处理Linux防火墙

1. systemctl status firewalld.service查看防火墙状态

hadoop@localhost ~]$ 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 2019-11-24 04:43:14 CST; 1h 42min ago
    Docs: man:firewalld(1)
Main PID: 703 (firewalld)
  CGroup: /system.slice/firewalld.service
          └─703 /usr/bin/python2 -Es /usr/sbin/firewalld --nofork --nopid

11月 24 04:43:12 localhost.localdomain systemd[1]: Starting firewalld - dyna...
11月 24 04:43:14 localhost.localdomain systemd[1]: Started firewalld - dynam...
Hint: Some lines were ellipsized, use -l to show in full.

active (running)说明防火墙正在开启

2. systemctl stop firewalld.service 关闭防火墙

● firewalld.service - firewalld - dynamic firewall daemon
  Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
  Active: inactive (dead)
    Docs: man:firewalld(1)

Active: inactive (dead)防火墙已关闭

3. systemctl disable firewalld.service 永久关闭防火墙,不再自启动

[hadoop@node3 ~]$ sudo 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.

处理Windos防火墙

控制面板-防火墙-高级设置-入站规则-新建入站规则(允许指定IP段访问),详细可参考https://jingyan.baidu.com/article/fb48e8bee35d456e622e14b3.html

此时,主机与虚拟机即可相互ping通,网络已经连通.

虚拟机中安装JDK

安装目录为:/usr/local/bin/jdk1.7.0_80,具体安装步骤可以参考https://www.cnblogs.com/sxdcgaq8080/p/7492426.html

• 添加环境变量

vi /etc/profile
# 文件最后加入${JAVA_HOME} centos 7使用,centos 6使用JAVa_HOME
#java environment
export JAVA_HOME=/usr/local/bin/jdk1.7.0_80
export CLASSPATH=.:${JAVA_HOME}/lib
export PATH=$PATH:${JAVA_HOME}/bin

• 刷新配置
  source /etc/profile