To configure a static IP address on Ubuntu Server 24.10, follow these simple steps.
Step 1 : Update and Install net-tools
First, update your server and install the net-tools package, which includes essential networking utilities like ifconfig.
sudo apt updatesudo apt install net-tools
Step 2 : Check Ethernet Interfaces
Use the ifconfig -a command to list all the Ethernet interfaces available on your server. Identify the interface for which you want to set a static IP address (e.g., eth0 or enp0s3).
ifconfig -aStep 3 : Open the Netplan Configuration File
Next, open the Netplan configuration file located at /etc/netplan/50-cloud-init.yaml. Use your preferred text editor (like nano or vim).
sudo nano /etc/netplan/50-cloud-init.yamlStep 4 : Add Static IP Configuration
In the configuration file, modify or add a section for the Ethernet interface to configure a static IP. Here’s an example configuration:
network:
ethernets:
enp1s0:
dhcp4: no
dhcp6: no
addresses: [192.168.1.36/24]
routes:
- to: default
via: 192.168.1.1
nameservers:
addresses: [ "8.8.8.8", "8.8.4.4" ]
version: 2
Step 5 : Apply the Changes
After saving the file, apply the changes to the network configuration by running the following command:
sudo netplan applyStep 6 : Check Connectivity
To verify that the static IP has been successfully applied, ping an external server like Google:
ping google.comCongratulations! You have successfully configured a static IP address on your Ubuntu Server 24.10.
4 Configure the Hostname
The hostname of your server should be a subdomain like “server1.example.com”. Do not use a domain name without a subdomain part, like “example.com” as the hostname, as this will cause problems later with your mail setup. First, you should check the hostname in /etc/hosts and change it when necessary. The line should be: “IP Address – space – full hostname incl. domain – space – subdomain part”. For our hostname server1.example.com, the file shall look like this:
nano /etc/hosts
-------------------------------------------------------
127.0.0.1 localhost.localdmain localhost
192.168.1.5 serv.yazilimyukle.com serv
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
Then edit the /etc/hostname file:
nano /etc/hostname
It shall contain only the subdomain part, in our case:
serv
Finally, reboot the server to apply the change:
systemctl reboot
Log in again and check if the hostname is correct now with these commands:
hostname hostname -f
The output shall be like this:
root@serv:~# hostname
serv
hostname -f
serv.yazilimyukle.com