In my job I have to create several virtual machines every month (each for a new project). We need a static ip to access our web application in browser even if Wi-Fi is not available (mostly while traveling or at the client site) .

Our OS, Software and Version

VirtualBox Version 6.0.0 r127566 (Qt5.6.2)
Download Windows hosts: htps //w w.ゃぃr 짠 l보 x. 오 rg / uuki / Dow wu a ds

CentOS-7-x86_64-Minimal-1810.iso
Download: ぢ tp : /// 음 ct. 전혀 s. rg/전과 s/7/이소 s/x86_64/전과 S-7-x86_64-미니마l-1810. 이소

Windows 10

Let's see how to setup Static IP on CentOS with Oracle VM VirtualBox.

Step 1: Before Creating a New Virtual Machine

Before we start, we need to check the 'DHCP Server' is enabled or not for 'VirtualBox Host-Only Ethernet Adapter'. If it is not available, you can create it. Select Network via Tools (Three Line Menu). Now you can see 'VirtualBox Host-Only Ethernet Adapter' Properties. (If it is not available, you can create it.) See (or check) the Adapter and DHCP Server settings as given in the following picture. Make a note of Lower Address Bound and Upper Address Bound values.

Step 2: Create Virtual Machine

Please follow the steps as per the images.













Important: Before first-start, please enable the Network Adapter 2 - Attached to 'Host-only Adapter and Select the Name 'VirualBox Host-Only Ethernet Adapter' (see Image 7)

Step 3: Start Virtual Machine

Select start-up disk CentOS-7-x86_64-Minimal-1810.iso -> Start

Install CentOS 7

What language would you like to use during the installation process?
Choose default and click on Continue.

Click Installation Destination and Select 'Local Standard Disks' and Done.

Now you can see 'Begin Installation' button highlighted in Blue color, click on it.

Click on Root Password and set it (click on Done)

Once CentOS 7 installation process finished, click on 'Reboot' button.

Step 4: Configure a Static IP on CentOS

Login with 'root' user.

Edit ifcfg-enp0s3 file as per the following code. (In vi editor, use 'i' for insert, 'esc' key to enter command mode and 'wq' for save and quit)

vi/etc/sysconfig/network-scripts/ifcfg-enp0s3

ONBOOT=yes
USERCTL=no

Edit ifcfg-enp0s8 file as per the following code. (Note. IPADDR value should be in between Lower Address Bound and Upper Address Bound values)

vi/etc/sysconfig/network-scripts/ifcfg-enp0s8

BOOTPROTO=none
ONBOOT=yes
IPADDR=192.168.56.141
PREFIX=24

Restart network

systemctl restart network

Test with the ping command, try it in a Windows Command Prompt window (CMD).

Microsoft Windows [Version 10.0.17763.253]
(c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\tutorial>ping 192.168.56.141

Pinging 192.168.56.141 with 32 bytes of data:
Reply from 192.168.56.141: bytes=32 time=1ms TTL=64
Reply from 192.168.56.141: bytes=32 time<1ms TTL=64
Reply from 192.168.56.141: bytes=32 time=1ms TTL=64
Reply from 192.168.56.141: bytes=32 time=1ms TTL=64

Ping statistics for 192.168.56.141:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 1ms, Average = 0ms

Bonus Tip

Disable firewall on CentOS.

systemctl stop firewalld.service && systemctl disable firewalld.service

Disable SELINUX
vi/etc/sysconfig/selinux

# SELINUX=permissive
SELINUX=disabled

Reboot your virtual machine!

Happy Coding!
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