Ubuntu 17.10 Configuring static IP addresses

The default is to dynamically assign IP after the system installation is complete

[email protected]:~$ ifconfigens32: flags=4163<up,broadcast,running,multicast>   mtu 1500        inet 192.168.209.221   netmask 255.255.255.0  broadcast 192.168.209.255         inet6 fe80::20c:29ff:fe9b:2437  prefixlen 64  scopeid 0x20<link >        ether 00:0c:29:9b:24:37  txqueuelen  1000   (Ethernet)         RX packets 632   bytes 78029  (78.0&NBSP;KB)         rx errors 0   dropped 0  overruns 0  frame 0         TX packets 440  bytes 56139  (56.1&NBSP;KB)          tx&nbsP;errors 0  dropped 0 overruns 0  carrier 0  collisions  0lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536         inet 127.0.0.1  netmask 255.0.0.0         inet6 ::1  prefixlen 128  scopeid 0x10

The previous version was modified in/etc/network/interfaces and the new version uses/etc/netplan/*.yaml
[Email protected]:~$ cat/etc/netplan/01-netcfg.yaml# This file describes the network interfaces available on your system# For more information, see Netplan (5). Network:version:2 RENDERER:NETWORKD Ethernets:ens32:dhcp4:yes
Edit Yaml file Configuration IP information
[Email protected]:~$ sudo vim/etc/netplan/01-netcfg.yaml # This file describes the network interfaces available on your s      ystem# For more information, see Netplan (5). Network:version:2 RENDERER:NETWORKD Ethernets:ens32:dhcp4:no Dhcp6:no addresses: [192.168.209.221/24] gateway4:192.168.209.2 nameservers:addresses: [8.8. 8.8, 114.114.114.114]

Execute the command to have the configuration take effect:
[Email protected]:~$ sudo netplan apply

Display Debug Information
[email protected]:~$ sudo netplan  --debug  apply **  (Generate : 2842):  debug: processing input file //etc/netplan/01-netcfg.yaml.. **  (generate:2842): debug: starting new processing pass**  (generate:2842):  DEBUG: ens32: setting default backend to 1**  (generate:2842):  Debug: generating output files. **  (generate:2842):  debug: networkmanager: definition ens32 is not for  us  (backend 1) debug:netplan generated networkd configuration exists,  Restarting networkddebug:no netplan generated nm configuration existsdebug: device ens32 operstate is up, not repluggingdebug:netplan triggering . link rules for ens32debug:device lo operstate is unknown, not&Nbsp;repluggingdebug:netplan triggering .link rules for lo 

Netplan Other parameter directives:
Netplan generate: Use/etc/netplan to generate/run/systemd/network/10-netplan-ens32.network after execution

Netplan Ifupdown-migrate: Attempt to convert from/etc/network/interfaces to Netplan required YAML format, if conversion succeeds it will prohibit the use of/etc/network/interfaces



This article is from the "Network Favorites" blog, so be sure to keep this source http://liyaoyi.blog.51cto.com/442933/1983481
Ubuntu 17.10 Configuring static IP addresses