虚拟机的NAT模式连接centos7配置静态IP连接外网

Bertha 。 2021-12-03 12:49 374阅读 0赞

1.打开VMWare->编辑->虚拟网络编辑器->点击更改设置

![aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTAzNzY2OS8yMDE5MDMvMTAzNzY2OS0yMDE5MDMyMzIzMDcxMTEzOC0xMjk2MTgxOTcwLnBuZw][]

2.选中VMnet8->取消使用本地DHCP服务将IP地址分配给虚拟机->点击NAT设置

![aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTAzNzY2OS8yMDE5MDMvMTAzNzY2OS0yMDE5MDMyMzIzMDkxOTU2Ny0xNjkzNzI1Njg5LnBuZw][]

3.进入 **NAT设置**，记住网关IP （*每个人的都不一样）*

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4.进入虚拟机设置编辑三个文件*（按顺序来）*

vi  /etc/sysconfig/network  
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vi /etc/sysconfig/network-scripts/ifcfg-**eno16777736 ***( 每个人不一样)*  
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vi  /etc/resolv.conf （ip填记录的网关）

![aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTAzNzY2OS8yMDE5MDMvMTAzNzY2OS0yMDE5MDMyMzIzMTYzMTUwMS0xMTk3MjA5NjUxLnBuZw][]

4.最后重启网络服务  
systemctl restart network.service  
systemctl stop firewalld(可选)

**验证**

1、ping 虚拟机网关 192.168.192.2

2、ping 自己主机ip

3、主机ping 虚拟机配置的ip（我这里设置的是192.168.192.192）

4、虚拟机 ping www.baidu.com

后续问题：

**一、连接不稳定**

有时 宿主机ping虚拟机没问题，有时候却发生 请求超时 的问题。

**![aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTAzNzY2OS8yMDE5MDMvMTAzNzY2OS0yMDE5MDMyODIzMjYzODQwOC0xMTc4OTE5NDYxLnBuZw][]**

这个时候，宿主机ipconfig命令会发现，vmware VMnet8的ip地址（169.254....）跟宿主机（192.168.1.100）完全不在一个网段。

![aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTAzNzY2OS8yMDE5MDMvMTAzNzY2OS0yMDE5MDMyODIzMjkyMTE2Mi0xMDU4ODQxNjkzLnBuZw][]

而能连接的，他们的网段是一样的。因此，最好把VMnet8的ip固定。

![aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTAzNzY2OS8yMDE5MDMvMTAzNzY2OS0yMDE5MDMyODIzMzEzNTcyNC0xNzU4MTU1NjY1LnBuZw][]

**二、局域网其他机器访问虚拟机。**

例如宿主机是A，虚拟机是B，运行在A中。C是A局域网内机器，不能访问B。

1、此时需要在A上设置转发。

![aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTAzNzY2OS8yMDE5MDMvMTAzNzY2OS0yMDE5MDMyODIzMzQxMzI4Ni0xMTA4NjM0NDEucG5n][]

2、关闭A的防火墙。

参考 ：

https://blog.csdn.net/csdn\_huzeliang/article/details/78632701 　　区别：**没有设置转发**

**后记**

克隆虚拟机后，出现固定ip无法生效，系统自动生成ip的情况，而且service network restart失败的状况。

1、网卡信息中添加虚拟机分配的MAC地址 HWADDR=00:0C:29:D9:92:D4

2、参考 [https://jingyan.baidu.com/article/17bd8e524c76a285ab2bb8ff.html][https_jingyan.baidu.com_article_17bd8e524c76a285ab2bb8ff.html] 进行网卡更名。

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[https_jingyan.baidu.com_article_17bd8e524c76a285ab2bb8ff.html]: https://jingyan.baidu.com/article/17bd8e524c76a285ab2bb8ff.html