ubuntu没有网卡，ubuntu添加网卡，Ubuntu只有io设备，Ubuntu没有网卡设备

一、列出网卡名，logical name即为要添加的网卡名

root@ubuntu-2:~# sudo lshw -class network
  *-network               
       description: Ethernet interface
       product: Virtio network device
       vendor: Red Hat, Inc
       physical id: 3
       bus info: pci@0000:00:03.0
       logical name: ens18
       version: 00
       serial: fa:16:3e:aa:ee:d4
       width: 32 bits
       clock: 33MHz
       capabilities: msix bus_master cap_list rom ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=virtio_net driverversion=1.0.0 ip=192.168.56.82 latency=0 link=yes multicast=yes
       resources: irq:10 ioport:c060(size=32) memory:febd1000-febd1fff memory:feb80000-febbffff
root@ubuntu-2:~#

二、配置网卡，vi /etc/network/interfaces

auto ens18
iface ens18 inet static
address 10.10.10.50
netmask 255.255.255.0
gateway 10.10.10.1

三、临时配置DNS，重启失效。vi /etc/resolv.conf

nameserver 8.8.8.8
nameserver 8.8.4.4

四、永久配置DNS，永久生效。vi /etc/resolvconf/resolv.conf.d/base

nameserver 8.8.8.8
nameserver 8.8.4.4

五、重启网络

systemctl restart networking

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