Set Static/DHCP ip address in ubuntu 17.10 Server OS.

Set static/DHCP IP address in ubuntu 17.10 server OS.

If you can not set static IP during or after ubuntu 17.10 installation, follow the steps below.

1. We first learn interface object name;

1	lshw -class network

Or

1	ls /sys/class/net

For object name example > enp0s3

2. Open the configuration file;

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sudo vi /etc/netplan/01-netcfg.yaml (or *.yaml) OR (with nano editor) sudo nano /etc/netplan/01-netcfg.yaml (or *.yaml)

edit;

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network: version: 2 renderer: networkd ethernets: enp0s3: #object name dhcp4: no # dhcp v4 disable dhcp6: no # dhcp v6 disable addresses: [10.0.0.11/24] # client IP address gateway4: 10.0.0.1 # gateway adrdess nameservers: addresses: [8.8.8.8,8.8.4.4] #name servers

it is important to empty and tab in .yaml files!!!

3. update network configuration with netplan;

1	sudo netplan apply

if we only want dhcp server;

edit .yaml file;

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network: version: 2 renderer: networkd ethernets: enp0s3: #object name dhcp4: yes # dhcp v4 enable dhcp6: yes # dhcp v6 enable (if you want)

if you encounter an error, for details;

1	sudo netplan --debug generate