RedHat Enterprise Linux

7 (RHEL 7)By,

Ramola Dhande

RHEL 7 INTRODUCTION

REDHAT:

◦ Worlds most recognized & trusted provider of

Linux.

◦ Open source technology.

◦ Supported hardware architectures:

Intel/AMD 64-bit (x86_64)

IBM POWER

IBM System z

LIGHTWEIGHT APPLICATION

ISOLATION VIA. LINUX

CONTAINERS

Containers enable continuous delivery

Containers in RHEL 7

◦ Supports both :

Host Containers ie. Identical Container

Image-Based Containers ie. Non-Identical Containers

RHEL 7 – Container Host

Linux Kernel

Hardware, VM, Cloud

Host ContainerImage-Based

Container

Containe

r

App A

Containe

r

App B

Containe

r

App C

App B

Runtime

B

App A

Runtime

A

App C

Runtime

C

FILE SYSTEMS

• Most Recommended

• Default file system for RHEL 7

• Best Performance

• Size : 500TB

XFS

• Recommended

• Standard file system for RHEL 6

• Very Robust & Reliable

• Size : 50TB

EXT4

• Still under intensive development

• Useful for local, large-scale use cases

• Includes basic volume management, snapshot support.

BTFS (Brtfs)

EASILY CREATE CUSTOM

INSTALLED IMAGES

RHEL 7 introduces ability to :

◦ Create

◦ Install

◦ Manage

forCustom

Images

Physical Deployment

Virtual Deployment

Cloud Deployment

Install & Manage

Custom Images

using

Anaconda

Kickstart

Automate Custom Images using Kickstart

FEATURESNETWORK MANAGER :◦ Eliminates need to manually configuration network

files.

◦ Flexible interface options with:

GUI

NMCLI

NMTUI

SECURITY FEATURES :

◦ Firewall Service (firewalld) :

Unified firewall management service for

Ipv4 (iptables)

Ipv6 (ip6tables)

Ethernet Bridges (ebtables)

For Managing

Local & Remote

Systems

RHEL AS VIRTUALIZATION HOST

KERNEL BASED VIRTUAL MACHINE

(KVM) :

◦ Inbuilt Virtualization software integrated with

Linux kernel

◦ Can interact directly with kernel

CHOICE OF DESKTOPS

GNOME CLASSIC (DEFAULT)

Familiar

More

traditional

look and

feel

CHOICE OF DESKTOPS

GNOME3 (GNOME SHELL)

ELEGANT

AND

INTUITIVE

USER

INTERFACE

FOCUS ON

END-USER

PRODUCTIVIT

Y

CHOICE OF DESKTOPS

KDE V4.10

AN

ALTERNATIV

E

TO GNOME

FOR USERS

WHO

PREFER

KDE