系统自动生成的无线网卡配置文件

CentOS75

配置文件和密码文件

nmtui和nmtui-connect可以配置出以下两个配置文件

[root@CentOS75 ~]# cat /etc/sysconfig/network-scripts/ifcfg-dlx 
[root@CentOS75 ~]# cat /etc/sysconfig/network-scripts/keys-dlx 

nmcli中，device和wifi要配置成enable。
另外很坑的是，笔记本上的硬件飞行模式要关掉，要不然nmcli中device一直是unavailable，且rfkill都查不到设备。

Ubuntu1804

配置文件

复制/usr/share/doc/netplan.io/examples中需要的文件（wireless.yaml）到/etc/netplan，修改成任意.yaml文件名

root@Ubuntu1804:~# ls /usr/share/doc/netplan.io/examples/
bonding_router.yaml  bridge.yaml                  loopback_interface.yaml  static_multiaddress.yaml                    vlan.yaml
bonding.yaml         dhcp.yaml                    network_manager.yaml     static_singlenic_multiip_multigateway.yaml  windows_dhcp_server.yaml
bridge_vlan.yaml     direct_connect_gateway.yaml  source_routing.yaml      static.yaml                                 wireless.yaml

之后执行netplan apply使配置生效

root@Ubuntu1804:~# cat /etc/netplan/eth0.yaml 
network:
  version: 2
  renderer: networkd
  ethernets:
    eth0:
      addresses:
        - 66.66.66.2/24
root@Ubuntu1804:~# netplan apply 
root@Ubuntu1804:~# ip a l eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether c8:cb:b8:02:a9:cb brd ff:ff:ff:ff:ff:ff
    inet 66.66.66.2/24 brd 66.66.66.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::cacb:b8ff:fe02:a9cb/64 scope link 
       valid_lft forever preferred_lft forever

推荐在Ubuntu中也使用NetworkManager，体验比netplan好很多..