Linux(CentOS7)安装与配置

今天药忘吃喽~ 2023-06-22 07:24 24阅读 0赞

# 1.Linux(CentOS7)安装 #

### 文章目录 ###

*  1.Linux(CentOS7)安装
 *  2.Linux(CentOS7)配置
 *   *  2.1.网络配置
     *  三种模式网络区别
     *   *  2.1.1.NAT模式网络配置
         *  2.1.2.桥接模式网络配置

CentOS官网： [https://wwwcentos.org/download/][https_wwwcentos.org_download]。VMware Workstation Pro 虚拟机为15版本。  
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![在这里插入图片描述][2019121423542759.png]  
虚拟机->设置（快捷键Ctrl + D）。设置虚拟机的ISO镜像系统。第一次开机启动的时候会读取该镜像给虚拟机安装系统。

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虚拟机->设置，选择网络适配器，使用NAT模式。（这个步骤可以省略）

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开启虚拟机，由于之前创建的是空的虚拟机，并且设置了ISO镜像，需要给虚拟机安装CentOS系统。

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目前虚拟机已经安装好了CentOS7系统，重启后输入账号和密码就可以登陆。

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现在的虚拟机安装好了系统，但是还没有设置好网络信息，如果输入ifconfig会出现一下提示。

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# 2.Linux(CentOS7)配置 #

## 2.1.网络配置 ##

网络配置模式有三种。1）仅主机2）NAT模式3）桥接模式。编辑->虚拟网络编辑器

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## 三种模式网络区别 ##

<table> 
 <thead> 
  <tr> 
   <th>连接方式</th> 
   <th>连接网卡</th> 
   <th>是否能连接本机</th> 
   <th>是否能连接局域网</th> 
   <th>是否能连接公网</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>桥接</td> 
   <td>本地真实网卡</td> 
   <td>可以</td> 
   <td>可以</td> 
   <td>可以</td> 
  </tr> 
  <tr> 
   <td>NAT</td> 
   <td>VMnet8</td> 
   <td>可以</td> 
   <td>不可以</td> 
   <td>可以</td> 
  </tr> 
  <tr> 
   <td>仅本机</td> 
   <td>VMnet1</td> 
   <td>可以</td> 
   <td>不可以</td> 
   <td>不可以</td> 
  </tr> 
 </tbody> 
</table>

安装了VMware虚拟机后，电脑的网络连接会有VMnet1和VMnet8两块网卡。

![在这里插入图片描述][2019121500012939.png]

### 2.1.1.NAT模式网络配置 ###

NAT模式连接，首先需要查询清楚网络的网段和网关信息。这样配置网络的时候才可以一次性配置好。

虚拟机->设置，选择网络适配器，使用NAT模式。

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开始配置NAT模式网络前，需要查询几个信息，确定IP地址的网段和网关信息。编辑->虚拟网络编辑器。

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Linux的网络配置是通过配置文件方式的。文件位置为：cd /etc/sysconfig/network-scripts/ifcfg-ens33（注意，不同的系统名称可能不一样。因为ens33是网卡名称，具体名称要看ifconfig的结果）。使用vi命令编辑该文件，如果不懂vi命令可以先百度学习。

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配置好网络服务后，重启网络服务。执行命令：service network restart

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执行命令ifconfig 查看网络的信息。

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验证本机是否可以ping通Linux虚拟机。网络正常，本地可以连接到虚拟机。

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### 2.1.2.桥接模式网络配置 ###

桥接模式网络配置，使用的是真实的网卡。因此要给虚拟机选择一块网卡。选择原则：如果本机使用的是有线网卡，那么是选择有线网卡。如果本机使用的是无线网卡，那么就选择无线网卡。

![在这里插入图片描述][2019121500041830.png]  
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虚拟机->设置（快捷键Ctrl + D）  
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安装后，输入ifconfig可以看到下面的信息。  
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进入/etc/sysconfig/network-scripts目录，执行ls查看文件。  
![在这里插入图片描述][2019121500050190.png]  
Vi命令编辑ifcfg-ens33文件。  
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配置保存后，重启网络服务。命令：Service network restart。重启后执行ifconfig，已经有了ip地址和掩码等信息。执行ping www.baidu.com如果可以通就说明网络已经配置好。  
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[https_wwwcentos.org_download]: https://www.centos.org/download/
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