ubuntu20.04 set static ip address (including different versions)

Because Ubuntu20.04 manages the network through netplan, which is slightly different from the previous version, Ubuntu18.04 seems to need to edit /network/interfaces to set up a static network

Because I installed a virtual machine, first I changed it to bridge mode

Next edit the file:

sudo vim /etc/netplan/01-network-manager-all.yaml

Modify the content of the file to:

I have always wondered, should I modify it for different ip addresses?

But because I haven’t reached that level yet, it’s not very clear. It should be possible to modify.

But there is no problem directly typing the following code into the file

Enter: wq save and exit, then enter

sudo netplan --debug apply

Can

Now that the static ip is set, you can check the current ip address through ifconfig.

12. x version

$ cat /etc/network/interfaces
 auto lo
 iface lo inet loopback
 
 auto eth0
 iface eth0 inet static
 address 20.20.20.102
 netmask 255.255.255.0
 gateway 20.20.20.102
 dns-nameservers 20.20.20.2

14. x version

$ cat /etc/network/interfaces
 auto lo
 iface lo inet loopback
 
 auto eth0
 iface eth0 inet static
 address 20.20.20.102
 netmask 255.255.255.0
 gateway 20.20.20.102
 dns-nameservers 20.20.20.2
 
$ cat /etc/NetworkManager/NetworkManager.conf
 [ main]
 plugins=ifupdown,keyfile,ofono
 dns=dnsmasq
 
 no-auto-default=00:0C:29:D7:43:29,[ifupdown]
 managed=true

16. x version

$ cat /etc/network/interfaces
 auto lo
 iface lo inet loopback
 
 auto ens32
 iface ens32 inet static
 address 20.20.20.102
 netmask 255.255.255.0
 gateway 20.20.20.102
 
$ cat /etc/NetworkManager/NetworkManager.conf
 [ main]
 plugins=ifupdown,keyfile,ofono
 dns=dnsmasq
 
 no-auto-default=00:0C:29:D7:43:29,[ifupdown]
 managed=true
 
$ cat /etc/resolv.conf
 nameserver 127.0.1.1
 nameserver 20.20.20.2

**18. x version: **

1、 First check the network card name

$ ip a / ifconfig

2、 cp a yaml file, change the name

$ sudo cp /etc/netplan/*.yaml /etc/netplan/NIC name.yaml

3、 Modify the content of the yaml file as follows:

# Let NetworkManager manage all devices on this system
network:
 version:2
 renderer: NetworkManager
 ethernets:
 NIC name:
 dhcp4: no
 addresses:[ip/prefix]
 gateway4: gateway
 nameservers:
 addresses:[dns]

4、 start up

$ sudo netplan apply

5、 verification

$ ip a / ifconfig

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