Red Hat Enterprise Linux 7(New Features, Changes, Capabilities)

Linux Training Overview

This course presents all of the major changes introduced into Red Hat Enterprise Linux (RHEL), version 7, organized by functional groups. Hands-on commands and lab exercises will be a large part of the class; every participant will have their own running server.

This course is the second preparation course for the RHCSA certification examination.

Systems: Red Hat Enterprise Linux Version 7 (all update levels)

Linux Training Prerequisites

It is assumed that the participant is familiar with Red Hat Enterprise Linux 6, in the capacity of a user/programmer, operator, system and/or network administrator.

Linux Training Course duration

This course normally requires two (2) days, approximately 65% lecture with hands-on commands and 35% lab time.

Linux Training Course Objectives

Each participant will be able to use RHEL 7 new features techniques and commands to understand the differences between previous versions, changes in administrative operations, security considerations, file systems, and networking.

Linux Training Course outline

Fundamentals Environment
  • RHEL 7 system overview
  • graphical environment (GNOME Classic)
  • BASH and Korn shell changes
  • interpreted languages: Python, Perl
  • documentation differences
    • man index caches
    • info, pinfo
  • wheel group in /etc/sudoers
  • systemd timers
Installation and Software Packaging
  • RHEL 7 installation (changes)
  • in-place upgrade from RHEL 6 to RHEL 7
  • subscription-manager
  • yum command (additions)
System Time Setup
  • using chrony (compared to NTP)
System Startup
  • GRUB 2
    • control file and directory locations
    • compilation mechanism
    • single user mode
    • forgotten root password (mode)
    • kernel command line keywords (changes)
  • systemd concepts and definitions
    • services, sockets
    • targets (compared to run-levels)
    • systemctl utility
    • journalctl utility
  • SysV compatability support
  • shutdown types (changes)
Networking
  • interfacing naming (changes)
  • control tools
    • Network Manager
    • nmtui, nmtui-edit, nmtui-hostname
    • nmcli
  • profile creation
  • services startups (changes)
  • firewalld and related tools
File Systems
  • partitioning tools
    • fdisk (changes)
    • partprobe (changes)
  • default filesystem type of xfs
    • xfs utilities
    • xfs dynamic change capabilities
  • using nofail option in /etc/fstab
  • changes in ext* file system types
  • LIO kernel target subsystem
    • targetcli tool
Miscellaneous Features
  • mapping of device (link) to persistent names
    • (GRUB) kernel option (udev.alias=1)

  • Pluggable Authentication Modules (PAM)
    • documentation (changes)
    • control file (changes)
  • UID / GID upper limit values
  • changes in base UID value

  • additional fields in file inode structure
  • file system caching changes
  • swap space requirements
  • changes to the /tmp directory
    • /tmpfiles.d control files
  • changes to the /run directory

  • Kickstart configuration (changes)

  • swap space requirements
  • teaming compared to bonding network adapters
  • changes to the /tmp directory
    • /tmpfiles.d control files
  • changes to the /run directory
  • new logging files and daemons
  • /etc/hostname (and related files)
    • hostnamectl (utility)
  • ncat (replaces netcat)

  • 32-bit application support

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