CentOS 7 – right URL as installation source [NetInstall]

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Part of the LFCS certification is to do the certification exam on a specific
Linux distribution. Today, one of the most common is CentOS 7 and sometimes the installation process depending the source you are using is a little confuse.

For this example we used:

  • CentOS-7-x86_64-NetInstall-1804.iso

  • Oracle VM Virtual Box

Please check the following image, shows the basic “errors” about the configuration, we will explain all of them but we will focus on “Installation Source

2018-06-15 18_18_08-CUSCO [Running] - Oracle VM VirtualBox
Image: Installation Summary
Number 1

This example is for VM, the network configuration is “bridge“, so there you just need to click and enable the interface.

Number 2

This is related to where the system/OS will be installed, just need to click and select the disk you created for that, if you know how to use LVM or if you need to create a partition you are able to do that on that section.

Number 3

The installation source is a simple mirror from were the installer can retrieve all the necessary files to successfully install the operating system. You can use the same as the following image, also this image can guide you to succesfully add the installation source.

Mirror: http//mirrors.kernel.org/centos/7/os/x86_64

Note: If that one does not work, you can use any source that feed your needs.

2018-06-15 18_23_59-CUSCO [Running] - Oracle VM VirtualBox
Image: Installation Source
Finally, you just need to select the type of installation (Minimal,Compute Node, Infraestructure Server, etc) that you want to install and wait some minutes until the process is done.

Check the following image,

2018-06-15 18_25_49-CUSCO [Running] - Oracle VM VirtualBox
Image: Software Selection
After that the “Begin Installation” button will be enabled, please click and begin the installation.

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