If you are a Linux system administrator, there will come a time when you need to configure the network on your system. Unlike desktops where you can use dynamic IP addresses, on server infrastructure you'll need to set up a static IP address (at least in most cases).

Assumptions:

IP: 192.168.0.100 Netmask : 255.255.255.0 hostname: vps.tino.org Gateway: 192.168.0.1 DNS Server first: 8.8.8.8 DNS Server 2: 4.4.4.4

Configure Static IP Addresses in RHEL / CentOS / Fedora:

Configuration file:

/etc/sysconfig/network
/etc/sysconfig/network-scripts/ifcfg-eth0

File "ifcfg-eth0" configures for the interface eth0 network card. If your theme is named eth1 ″ then the file you need to edit is “ifcfg-eth1”.

You can check the network cards on VPS with the command:

 ifconfig -a
Hoặc 
ip addr

Configure file: / etc / sysconfig / network

Edit with the command:

# vi /etc/sysconfig/network

Open that file and set:

NETWORKING=yes
HOSTNAME=vps.tino.org
GATEWAY=192.168.0.1
NETWORKING_IPV6=no
IPV6INIT=no

Edit next file:

# vi /etc/sysconfig/network-scripts/ifcfg-eth0

Note: Make sure you open the correct network card configuration file.

Change information:

DEVICE="eth0"
BOOTPROTO="static"
DNS1="8.8.8.8"
DNS2="4.4.4.4"
GATEWAY="192.168.0.1"
HOSTNAME="vps.tino.org"
HWADDR="00:19:99:A4:46:AB"
IPADDR="192.68.0.100"
NETMASK="255.255.255.0"
NM_CONTROLLED="yes"
ONBOOT="yes"
TYPE="Ethernet"
UUID="8105c095-799b-4f5a-a445-c6d7c3681f07"

You just need to edit the following values:

DNS1 and DNS2

GATEWAY

HOSTNAME

NETMASK

IPADDR

Next you configure the DNS resolution server management file.

resolve.confYou can edit it with the software Because or nano

# vi /etc/resolv.conf

  
nameserver 8.8.8.8 # 
nameserver 4.4.4.4 #

Once you have made your changes restart the networking with:

# /etc/init.d/network restart  [On SysVinit]
# systemctl restart network    [On SystemD]

Set static IP addresses in Debian / Ubuntu

To set up an internal static IP address Debian / Ubuntu Open the following file:

# nano /etc/network/interfaces

You can see a line that looks like this:

auto eth0
iface eth0 inet dhcp

Change into:

auto eth0
iface eth0 inet static 
  address 192.168.0.100
  netmask 255.255.255.0
  gateway 192.168.0.1
  dns-nameservers 4.4.4.4
  dns-nameservers 8.8.8.8

Save the file, then edit the following file:

/etc/resolv.conf

edit command:

# nano /etc/resolv.conf

nameserver 8.8.8.8 
nameserver 4.4.4.4

Restart the network on VPS.

# /etc/init.d/network restart  [On SysVinit]
# systemctl restart network    [On SystemD]

Your static IP address is configured.

Conclude:

Now you know how to configure a static IP address on a Linux VPS. If you have any questions or comments, please feel free to post them in the comments below.