Configure Static IP Address in Ubuntu 20.04.6 LTS

For configuring static IP Address in Ubuntu Server you need to 
make netplan configuration changes in /etc/netplan/ directory.
# cd /etc/netplan/
Now go and edit the configuration file there named 
"00-installer-config.yaml" and add below configuration for
static IP address: (Bold are added lines)
# vi 00-installer-config.yaml
# This is the network config written by 'subiquity'
network:
  ethernets:
    ens33:
      dhcp4: no
      addresses: [192.168.10.165/24]
      gateway4: 192.168.10.2
      nameservers:
              addresses: [192.168.10.2]
  version: 2
Apply added configurations:
# netplan apply	
Verify your configuration using below command:
# ip a
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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:0c:29:28:f3:86 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.165/24 brd 192.168.10.255 scope global ens33
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fe28:f386/64 scope link
       valid_lft forever preferred_lft forever

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