1. Vmvare设置 “编辑->虚拟机网络编辑”

这里设置了3个虚拟网络(两个主机模式，这两个网络其实都没用到，然后配置了一个NAT模式，默认是动态IP，可以通过DHCP配置修改动态变更范围、时间等，后续就把它改为静态IP)

如图可以看出这就是动态IP
![在这里插入图片描述](https://img-blog.csdnimg.cn/e6d8030e122542ddb67a022e24862fab.png
添加这3个虚拟网络后WINDOWS会多出这3个网络适配器

这里需要记住网关IP，linux配置网卡要用

2. 新建一个虚拟机并给它设置网卡

这里设置了两个网卡，一个NAT模式一个主机模式，故进入linux会看到这两个网卡eth0,eth1
在这里插入图片描述

这里安装了docker会有各docker0虚拟网卡，eth0,eth1就是配置的NAT模式 ,主机模式网卡，lo是默认都有的回环IP的虚拟网卡

[root@node1 ~]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:63:2c:f6:15  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.72.128  netmask 255.255.255.0  broadcast 192.168.72.255
        inet6 fe80::c1de:2992:816a:3e07  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:2e:e1:98  txqueuelen 1000  (Ethernet)
        RX packets 9816  bytes 988200 (965.0 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 14247  bytes 2828027 (2.6 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 18  base 0x2000  

eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet6 fe80::20c:29ff:fe2e:e1a2  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:2e:e1:a2  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 70  bytes 12004 (11.7 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2080  

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

3. 配置eth0网卡为静态IP `vim /etc/sysconfig/network-scripts/ifcfg-eth0`

# 默认是如下动态IP (dhcp)配置
BOOTPROTO=dhcp
ONBOOT=yes  
DEVICE=eth0

现在把eth0改为静态IP，注意设置的静态IP地址，可取192.168.72.0~192.168.72.255 前缀同网关，192.168.72.0一般是子网IP，192.168.72.2是网关，192.168.72.255是广播IP，故静态IP的末位不能是0，2，255

DEVICE=eth0
OXY_METHOD="none" 
BROWSER_ONLY="no" 
BOOTPROTO="static"         # 使用静态IP地址，默认为dhcp
IPADDR="192.168.72.128"     # 设置的静态IP地址 ，可取192.168.72.0~192.168.72.255 前缀同网关，192.168.72.0一般是子网IP，192.168.72.2是网关，192.168.72.255是广播IP，故静态IP的末位不能是0，2，255
NETMASK="255.255.255.0"    # 子网掩码 
GATEWAY="192.168.72.2"      # 网关地址 就是上面说的那个地址
DNS1="114.114.114.114"     # DNS服务器,不用改
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="95b614cd-79b0-4755-b08d-99f1cca7271b"  #随便
ONBOOT="yes"

4、测试

使用nmcli网卡管理工具查看各网卡状态，

[root@node-1 ~]# nmcli device status
DEVICE           TYPE      STATE   CONNECTION      
eth0             ethernet  已连接  System eth0     
eth1             ethernet  已断开  --              
docker0          bridge    未托管  --              
lo               loopback  未托管  --

可以ifconfig看到eth1的TX ,RX数据确实是有问题的，仅有一点输出流量，且 ifconfig eth0 down 之后ping jd.com是不通的了

[root@node-1 ~]# ifconfig 
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:31:14:fd:36  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.72.128  netmask 255.255.255.0  broadcast 192.168.72.255
        inet6 fe80::c1de:2992:816a:3e07  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:2e:e1:98  txqueuelen 1000  (Ethernet)
        RX packets 6986  bytes 695920 (679.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 9519  bytes 1888928 (1.8 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 18  base 0x2000  

eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether 00:0c:29:2e:e1:a2  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 102  bytes 18244 (17.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 19  base 0x2080  

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 32  bytes 2592 (2.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 32  bytes 2592 (2.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0