新系统的网络配置

一、查看网卡配置信息

[root@localhost /]# ip ad
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:36:a0:09 brd ff:ff:ff:ff:ff:ff
    inet 192.168.249.133/24 brd 192.168.249.255 scope global noprefixroute dynamic ens32
       valid_lft 1738sec preferred_lft 1738sec
    inet6 fe80::989a:b11f:f6cc:ccfe/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

显示该虚拟机的网卡名称为：ens32，并且已经配置过IP信息。

二、配置网卡

[root@localhost /]# vim /etc/sysconfig/network-scripts/ifcfg-ens32

按 i 进入编辑模式，将文件修改为：

TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="static"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="ens32"
UUID="07e2f4f9-0373-46ec-8314-265be39166e0"
DEVICE="ens32"
ONBOOT="yes"
IPADDR=192.168.249.134
NETMASK=255.255.255.0
GATEWAY=192.168.249.1
DNS1=114.114.114.114

按 ESC 键进入命令模式，输入“:x”保存并退出。

三、重启网卡，查看网络配置是否生效。

重启网络服务

[root@localhost ~]# systemctl restart network

查看IP信息是否已经更新

[root@localhost ~]# ip ad
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:36:a0:09 brd ff:ff:ff:ff:ff:ff
    inet 192.168.249.134/24 brd 192.168.249.255 scope global noprefixroute ens32
       valid_lft forever preferred_lft forever
    inet6 fe80::989a:b11f:f6cc:ccfe/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever

验证网络的连通性

[root@localhost ~]# ping www.cnblogs.com
PING www.cnblogs.com (121.40.43.188) 56(84) bytes of data.
64 bytes from 121.40.43.188 (121.40.43.188): icmp_seq=1 ttl=128 time=28.7 ms
64 bytes from 121.40.43.188 (121.40.43.188): icmp_seq=2 ttl=128 time=29.7 ms
64 bytes from 121.40.43.188 (121.40.43.188): icmp_seq=3 ttl=128 time=29.4 ms
64 bytes from 121.40.43.188 (121.40.43.188): icmp_seq=4 ttl=128 time=33.5 ms
^C
--- www.cnblogs.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3013ms
rtt min/avg/max/mdev = 28.704/30.349/33.560/1.893 ms

至此，新系统网卡配置完成！