Red Hat Enterprise Linux 7 (RHEL 7) is the latest version of RHEL from Red Hat, the world's most recognized provider of Linux and open source technology. RHEL 7 supports containers for application isolation and deployment flexibility. It features the XFS file system by default and supports EXT4 and Btrfs as well. RHEL 7 also introduces the ability to easily create, install, and manage custom machine images for physical, virtual, and cloud deployments. Additional features include an improved Network Manager, strengthened security with firewalld, and choice of GNOME, GNOME Shell, or KDE desktop environments.

1. RedHat Enterprise Linux
7 (RHEL 7)
By,
Ramola Dhande

2. 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

3. 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

4. RHEL 7 – Container Host
Linux Kernel
Hardware, VM, Cloud
Host Container
Image-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

5. 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)

6. EASILY CREATE CUSTOM
INSTALLED IMAGES
RHEL 7 introduces ability to :
◦ Create
◦ Install
◦ Manage
for
Custom
Images
Physical Deployment
Virtual Deployment
Cloud Deployment
Install & Manage
Custom Images
using
Anaconda
Kickstart
Automate Custom Images using Kickstart

7. FEATURES
NETWORK 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

8. RHEL AS VIRTUALIZATION HOST
KERNEL BASED VIRTUAL MACHINE
(KVM) :
◦ Inbuilt Virtualization software integrated with
Linux kernel
◦ Can interact directly with kernel

9. CHOICE OF DESKTOPS
GNOME CLASSIC (DEFAULT)
Familiar
More
traditional
look and
feel

10. CHOICE OF DESKTOPS
GNOME3 (GNOME SHELL)
ELEGANT
AND
INTUITIVE
USER
INTERFACE
FOCUS ON
END-USER
PRODUCTIVIT
Y

11. CHOICE OF DESKTOPS
KDE V4.10
AN
ALTERNATIV
E
TO GNOME
FOR USERS
WHO
PREFER
KDE