In this tutorial, we'll give you step by step instructions on how to change your server's IP address on Ubuntu. Remember that you need to be root user or have root privileges to perform this commands.
Now, open up the /etc/network/interfaces file. We're going to use vi, but you can choose the editor of your choice.
1. Confirm your current IP address:
ifconfig eth0
You should have an output like this:
eth0 Link encap:Ethernet HWaddr 00:16:3C:2A:76:60 inet addr:10.10.10.39 Bcast:10.10.10.63 Mask:255.255.255.224 inet6 addr: fe80::216:3cff:fe2a:7660/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3287516 errors:0 dropped:0 overruns:0 frame:0 TX packets:1961807 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1048333886 (999.7 MiB) TX bytes:2596365984 (2.4 GiB)
Pay special attention to the values of inet addr, Bcast and Mask. This reflects your current IP addressing.
2. Replace the values with the new IP address
You need to edit the eth0 interface in order to change the IP address and the corresponding networking values.
sudo vi /etc/network/interfaces
Edit the values of address, gateway, netmask
auto eth0
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.1
Save and close the file
3. Restart the network service:
sudo /etc/init.d/networking restart
4. Confirm the changes:
ifconfig eth0
You should see the inet addr, Bcast and Mask values updated.
Thank you!
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