rhel-network-install-setup

The rhel-network-install-setup guide provides essential information for managing networking, troubleshooting, and setting up repositories for offline installation on Red Hat Enterprise Linux (RHEL)

Table of Contents

1.Network Management Commands

• Check Network Interfaces
• View NetworkManager Connections
• Manage Network Connections
• Modify Connections
• Device Information

2.Network Troubleshooting Commands

3.Repository Setup for Offline Installation

• Mounting and Accessing the CD-ROM
• Configure YUM Repositories
• Install and Manage Packages

1. Network Management Commands

Check Network Interfaces

Displays all network interfaces and their IP addresses. ip a or ifconfig

Shows statistics for network interfaces, including RX (received packets) and TX (transmitted packets).

View NetworkManager Connections

Lists all available network connections.

Displays the status of devices managed by NetworkManager.

Manage Network Connections

nmcli con up # Activates a specified connection. nmcli con down # Deactivates a specified connection. Examples:

Activates the connection named "con1".

Deactivates the connection for the "con1" interface.

Turns off networking.

Turns on networking.

Modify Connections

nmcli con add con-name 'home' type ethernet ipv4.addresses 192.168.0.111/24

Modify

Activates the "home" connection

Displays details of the "home" connection

you can modify this by above modify command

Device Information

Shows detailed information about all devices.

Displays detailed information for the "ens160" device.

you don't modify it

Disables the "ens160" device.

Enables the "ens160" device.

2. Network Troubleshooting Commands

ping

The ping command in Linux is used to test the connectivity between your system and another system (host) over a network. When you use ping with an IP address, it sends packets of data to that IP address and waits for a response. This helps you check if the target machine is reachable and measures the time it takes for the packets to travel back and forth

Traces the path to Google, showing each hop and its latency.

3. Repository Setup for Offline Installation

Mounting and Accessing the CD-ROM

Navigate to the cdrom Device

Create a Mount Point and Mount the CD-ROM

Creates a directory for mounting the CD-ROM.

Mounts the CD-ROM to the "/install" directory.

In the case,you don't find BaseOs and AppOs files then mount /dev/sr1 /install

⚠ Note: The mount is temporary and will be lost after a reboot. To persist the files:

Configure YUM Repositories

Opens a file to configure repositories.

vim redhat.repo

Add the following configuration:

Install and Manage Packages

Installs the Nginx web server.

Installs Node.js

Removes Node.js

Note:you can also use subscription method insided of offline repo setup