Linux虚拟机网卡配置

vim方式

1. 先用ifconfig获取自己的网卡号

[root@master lyf]# ifconfig
#执行结果
#其中：ens33是网卡名字
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.64.128  netmask 255.255.255.0  broadcast 192.168.64.255
        inet6 fe80::2376:f203:5e45:6ec2  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:25:b4:45  txqueuelen 1000  (Ethernet)
        RX packets 432  bytes 250302 (244.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 417  bytes 35102 (34.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
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 48  bytes 4080 (3.9 KiB)

RX errors 0  dropped 0  overruns 0  frame 0

TX packets 48  bytes 4080 (3.9 KiB)

TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500

inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255

ether 52:54:00:c1:f2:c0  txqueuelen 1000  (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

ens33 表示第一块网卡，

inet addr 用来表示网卡的IP地址，此网卡的IP地址是192.168.64.128，广播地址Bcast:192.168.64.255，掩码地址Mask:255.255.255.0。

ether后面是网卡物理地址，此网卡物理地址是 00:0c:29:25:b4:45

2. 切换到/etc/sysconfig/network-script/目录中（存放网卡配置的文件）

[root@master lyf]# cd /etc/sysconfig/network-scripts/

3. 使用vim编辑器修改网卡ifcfg-ens33(网卡名称），写入下面的配置参数并保存退出。

/*
设备类型：TYPE=Ethernet
地址分配模式：BOOTPROTO=static
网卡名称：NAME=ens33
是否启动：ONBOOT=yes
IP地址：IPADDR=192.168.64.129
子网掩码：NETMASK=255.255.255.0
网关地址：GATEWAY=192.168.64.1
DNS地址：DNS1=192.168.64.1
*/
vim ifcfg-ens33

4. 配置好后保存并退出，然后输入 nmcli connection reload ens33重启网卡

5. 测试使用ping命令测试网络是否连通

 

[root@master network-scripts]# ping baidu.com
PING baidu.com (110.242.68.66) 56(84) bytes of data.
64 bytes from 110.242.68.66 (110.242.68.66): icmp_seq=1 ttl=128 time=39.4 ms
64 bytes from 110.242.68.66 (110.242.68.66): icmp_seq=2 ttl=128 time=45.2 ms
64 bytes from 110.242.68.66 (110.242.68.66): icmp_seq=3 ttl=128 time=37.3 ms
64 bytes from 110.242.68.66 (110.242.68.66): icmp_seq=4 ttl=128 time=37.7 ms
^C
--- baidu.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3011ms
rtt min/avg/max/mdev = 37.386/39.942/45.217/3.148 ms

 

以上2、3步命令课可以直接写为：

[root@master network-scripts]# vi /etc/sysconfig/network-scripts/ifcfg-ens33