ubuntu 16 是通过修改/etc/network/interfaces来配置网络接口信息，ubuntu 18 网络配置工具换成了netplan ，对应的配置文件也换成了/etc/netplan/*.yaml。
ubuntu 16 修改/etc/network/interfaces，按照模版改就可以了：
1 2 3 4 5 6 7 8 9 10 11 # config interfaces for : lo auto lo iface lo inet loopback # config interfaces for : eth0 auto eth0 iface eth0 inet static address xxx.xxx.xxx.xxx(enter your ip here) netmask xxx.xxx.xxx.xxx gateway xxx.xxx.xxx.xxx(enter gateway ip here,usually the address of the router) dns-nameservers xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx
改完了重启对应 的网络接口就行了
1 sudo ifdown eth0 && sudo ifup eth0
ubuntu 18 ubuntu 18 网络配置工具换成了netplan ，配置文件是yaml格式。也是照着模版改就行了：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 network: version: 2 ethernets: ens160: addresses: [] dhcp4: true optional: true ens192: addresses: - 192.168 .0 .8 /24 gateway4: 192.168 .0 .1 nameservers: addresses: - 192.168 .0 .1 - 192.168 .0 .250 search: [] optional: true
改完了执行以下命令刷新配置
除此之外，原来的ifconfig也不是默认安装了（需要可以手动安装sudo apt install net-tools）,它的替代者是ip命令，比如看ip地址信息可以使用ip address，输出如下
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 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: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 00:0c:29:b9:04:bc brd ff:ff:ff:ff:ff:ff inet 192.168.10.135/24 brd 192.168.10.255 scope global dynamic ens160 valid_lft 418191sec preferred_lft 418191sec inet6 fe80::20c:29ff:feb9:4bc/64 scope link valid_lft forever preferred_lft forever 3: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 00:0c:29:b9:04:c6 brd ff:ff:ff:ff:ff:ff inet 192.168.0.228/24 brd 192.168.0.255 scope global ens192 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:feb9:4c6/64 scope link valid_lft forever preferred_lft forever
ip命令的其他参数如下：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 Usage: ip [ OPTIONS ] OBJECT { COMMAND | help } ip [ -force ] -batch filename where OBJECT := { link | address | addrlabel | route | rule | neigh | ntable | tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm | netns | l2tp | fou | macsec | tcp_metrics | token | netconf | ila | vrf | sr } OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] | -h[uman-readable] | -iec | -f[amily] { inet | inet6 | ipx | dnet | mpls | bridge | link } | -4 | -6 | -I | -D | -B | -0 | -l[oops] { maximum-addr-flush-attempts } | -br[ief] | -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] | -rc[vbuf] [size] | -n[etns] name | -a[ll] | -c[olor]}
