HARTMANN software group

55187: Linux System Administration Training in Arlington

Enroll in or hire us to teach our 55187: Linux System Administration class in Arlington, Virginia by calling us @303.377.6176. Like all HSG classes, 55187: Linux System Administration may be offered either onsite or via instructor led virtual training. Consider looking at our public training schedule to see if it is scheduled: Public Training Classes
Provided there are enough attendees, 55187: Linux System Administration may be taught at one of our local training facilities.

Answers to Popular Questions:

  
Yes, this class can be tailored to meet your specific training needs.
Yes, we provide Linux Unix consulting services.
Yes, group discounts are provided.
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Course Description

  
This four-day instructor-led course is designed to provide students with the necessary skills and abilities to work as a professional Linux system administrator. The course covers how to administer, configure and upgrade Linux systems running one of the three major Linux distribution families: Red Hat, SUSE, Debian/Ubuntu, how to master the tools and concepts you will need to efficiently build and manage an enterprise Linux infrastructure. It also covers how to use state-of-the-art system administration techniques in real-life scenarios via practical labs. This course prepares the user for the Linux Foundation Certified System Administrator (LFCS) exam, which is also a required component of the MCSA: Linux on Azure Certification.
Course Length: 4 Days
Course Tuition: $2090 (US)

Prerequisites
Knowledge of the basic components of Linux. Familiarity with text editors. Working knowledge of Bash scripting.

Course Outline

  
This module explains how to manage startup and shutdown processes in Linux.
 
Understanding the Boot Sequence
The Grand Unified Boot Loader
GRUB Configuration Files
System Configuration Files in /etc
The init Process
SysVinit Startup
chkconfig and service
Upstart
systemd
Shutting down/Rebooting the System
 
 
Lab: Chapter Labs
 
Boot into non-graphical mode using GRUB
Add a new startup service with System V
Add a new startup services with system
Run Shutdown vs. Halt vs. Reboot
 
 
After completing this module, students will be able to:
 
Manage startup process in Linux.
Manage shutdown process in Linux.
 
 
Module 2: Linux Filetree System Layout
 
This module explains how the Linux Filesystem is organized and points out the key directories and their roles.
 
 
 
Lessons
 
Data Distinctions
FHS Linux Standard Directory Tree
root (/) directory
/bin
/dev
/etc
/home
/lib and /lib64
/media
/mnt
/opt
/proc
/sys
/root
/sbin
/tmp
/usr
/var
/run
 
 
Lab: Chapter Labs
 
Change size of the default directories
Touring the /proc Filesystem
 
 
After completing this module, students will be able to:
 
Describe how the Linux Filesystem is set up.
 
Demonstrate knowledge of how the key directories work.
 
Module 3: Kernel Services and Configuration
 
This module explains how the Linux Kernel is configured, how the modules and utilities work, the function of sysctl and udev and Device Management.
 
 
 
Lessons
 
Kernel Overview
Kernel Configuration
sysctl
Kernel Modules
Module Utilities
Module Configuration
udev and Device Management
 
 
Lab: Chapter Labs
 
Manipulating system tunables with sysctl.
Changing the maximum process ID.
Working with Kernel modules.
Working with udev
 
 
After completing this module, students will be able to:
 
Describe how the Linux Kernel is configured.
Work with Kernel modules.
Manage devices.
Work with udev and sysctl.
 
 
Module 4: Partitioning and Formatting Disks
 
This module explains how to work with disks in Linux by naming, partitioning and sizing them.
 
 
 
Lessons
 
Common Disk Types
Disk Geometry
Partitioning
Naming Disk Devices
Sizing up partitions
Partition table editors
 
 
Lab: Chapter Labs
 
Using a file as a disk partition image
Partioning a Disk Image file
Using losetup and parted
Partitioning a real hard disk
 
 
After completing this module, students will be able to:
 
Partition disks.
Name disk drives.
Size partitions.
Edit partition tables.
 
 
Module 5: Linux Filesystems
 
This module explains how to work with Linux Filesystems, starting with the understanding that Linux treats everything as a file. IT covers Virtual filesystem (VFS), Filesystem Usage and Attributes, Major types (ext4, XFS, btrfs) and how to create, format, mount, swap and repair Filesystems.
 
 
 
Lessons
 
Some Notes About Filesystems
Virtual Filesystem (VFS)
Filesystem Concepts
Disk and Filesystem Usage
Extended Attributes
ext4
XFS
btrfs
Creating and formatting filesystems
Checking and Repairing Filesystems
Mounting filesystems
Swap
Filesystem Quotas
 
 
Lab: Chapter Labs
 
Defragmenting a system.
Modifying Filesystem parameters using tune2fs.
Working with file attributes.
Mounting options.
Managing swap space.
Filesystem quotas.
Working with XFS
Working with btrfs
 
 
After completing this module, students will be able to:
 
Create Filesystems.
Format Filesystems.
Mount Filesystems.
Use swap partitions.
Manage Filesystem quotas.
Repair Filesystems.
 
 
Module 6: RAID and LVM
 
This module explains how to work with RAID and Logical Volume Management (LVM).
 
 
 
Lessons
 
RAID
RAID Levels
Software RAID Configuration
Logical Volume Management (LVM)
Volumes and Volume Groups
Working with Logical Volumes
Resizing Logical Volumes
LVM Snapshots
 
 
Lab: Chapter Labs
 
Creating a RAID device
Creating Logical Volumes
 
 
After completing this module, students will be able to:
 
Understand, configure and monitor RAID.
Create, resize and utilize Logical Volumes.
Work with LVM snapshots.
 
 
Module 7: Processes
 
This module explains how to work with Linux processes. It begins with an overview of what processes are and how they work before procreding to illustrate how to create, monitor, prioritize and limit processes.
 
 
 
Lessons
 
Programs and Processes
Process States
Execution Modes
Daemons
Creating Processes
Process Limits
Process Monitoring
Signals
niceness
Libraries
 
 
Lab: Installing and Configuring Windows 7
 
Controlling processes with ulimit
Using ps and top
Monitoring process states
Examining signal priorities and execution
 
 
After completing this module, students will be able to:
 
Describe the role of processes in Linux and how they relate to programs.
Identify the different states processes can take.
Monitor and limit processes.
Set process priority using niceness values.
 
 
Module 8: Package Management Systems
 
This module explains how to work with the major package management systems used in Linux distributions. Covers both RPM and DKPG as well as the use of version control systems such as git.
 
 
 
Lessons
 
Software Packaging Concepts
RPM (Red Hat Package Manager)
DPKG (Debian Package)
Revision Control Systems
 
 
Lab: Chapter Labs
 
Using RPM
Rebuilding the RPM database
Using DKPG
Version control with git
 
 
After completing this module, students will be able to:
 
Understand the role and function of package management systems.
Understand and use RPM.
Understand and use DKPG.
Understand the role of revision control systems, particularly git.
 
 
Module 9: Package Installers
 
This module explains how to use the major package installers, including yum, zypper and APT. It also explains the role that package installers play in automating software management and dealing with dependencies.
 
 
 
Lessons
 
Package Installers
yum
zypper
APT
 
 
Lab: Chapter Labs
 
Basic yum commands
Using yum to find information about a package
Managing groups of packages with yum
Adding a new yum repository
Basic zypper commands
Using zypper to find information about a package
Basic APT commands
Using APT to find information about a package
Managing groups of packages using APT
 
 
After completing this module, students will be able to:
 
Describe the role that package installers play in managing the software update process.
Demonstrate proficiency with APT, yum and zipper.
 
 
Module 10: User and Group Account Management
 
This module explains how to work with users and groups in Linux. It also covers how to work with passwords, restricted shells, the root account, Pluggable Authentication Modules (PAM), LDAP and SSH.
 
 
 
Lessons
 
User Accounts
Management
Passwords
Restricted Shells and Accounts
The root Account
Group Management
PAM (Pluggable Authentication Modules)
Authentication Process
Configuring PAM
LDAP Authentication
File Permissions and Ownership
SSH
 
 
Lab: Chapter Labs
 
Working with user accounts
Working with groups
Configuring PAM
Using chmod
 
 
After completing this module, students will be able to:
 
Manage users and groups by adding/deleting/modifying them.
Configure and use LDAP.
Configure on use PAM.
Modify user processes and resources.
Appropriately use the root account.
Use SSH to securely access remote systems.
 
 
Module 11: Backup and Recovery Methods
 
This module explains how to backup data in Linux. It covers the tools that are used for backup and compression as well as for moving and copying files and also for restoring files.
 
 
 
Lessons
 
Backup Basics
cpio
tar
Compression: gzip, bzip2 and xz and Backups
dd
rsync
dump and restore
mt
Backup Programs
 
 
Lab: Chapter Labs
 
Using tar for backup
Using cpio for backup
Using rsync for backup
 
 
After completing this module, students will be able to:
 
Describe the benefits of backup up data.
Demonstrate proficiency with common backup tools.
Demonstrate proficiency with common compression tools.
 
 
Module 12: Networking
 
This module explains how to conduct basic networking in Linux. It covers IP addresses, Hostnames, Network Interfaces, Routing and Name Resolution.
 
 
 
Lessons
 
IP Addresses
Hostnames
Configuring Network Interfaces
Routing
Name Resolution
Network Diagnostics
 
 
Lab: Chapter Labs
 
Static configuration of a network interface
Adding a static hostname
Adding a network interface alias
 
 
After completing this module, students will be able to:
 
Explain how IP addresses function.
Manipulate hostnames.
Configure network interfaces.
Route traffic persistently and non-persistently.
Perform network diagnostics.
 
 
Module 13: Firewalls
 
This module explains how to work with firewalls in Linux. It covers both command line tools and GUI tools as well as firewalld. Zones and source management are discussed, as is service and port management.
 
 
 
Lessons
 
Firewalls
Interfaces
firewalld
Zones
Source Management
Service and Port Management
 
 
Lab: Chapter Labs
 
Installing firewalld
Examining firewall-cmd
Adding services to a zone
Using the firewall GUI
 
 
After completing this module, students will be able to:
 
Describe the role and function of firewalls.
Understand the most commonly use tools.
Describe the function of zones.
Implement services on zones.
 
 
Module 14: Local System Security
 
This module explains how to secure systems against both internal and external threats. It covers how to identify risks and provides guidance on how to decide what protection is appropriate. Finally, it covers the basic types of security available (physical, filesystem, and security modules e.g. SELinux).
 
 
 
Lessons
 
Local System Security
Creating a Security Policy
Updates and Security
Physical Security
Filesystem Security
Linux Security Modules
 
 
Lab: Chapter Labs
 
Using SELinux
Security and mount options
Using umask
Usint setuid and scripts
 
 
After completing this module, students will be able to:
 
Describe the sources of threats to system security.
Understand the components important to creating a security policy.
Demonstrate basic familiarity with SELinux.
 
 
Module 15: Basic Troubleshoot and System Rescue
 
This module explains how to conduct troubleshooting in Linux as well as likely sources of issues. It covers basic concepts in system rescue and recovery and how to identify corrupted filesystems.
 
 
 
Lessons
 
Troubleshooting Overview
Things to Check: Networking
Boot Process Failures
Filesystem Corruption and Recovery
Virtual Consoles
Rescue Media and Troubleshooting
System Rescue and Recovery
 
 
Lab: Chapter Labs
 
Preparing to use Rescue/Recover media
Recovering from a corrupted GRUB configuration
Recovering from a password failure
Recovering from partition table corruption
Recovering using the install image
 
 
 
After completing this module, students will be able to:
 
Describe the common sources of corruption/performance issues.
Identify the cause of system issues.
Recover a system after some of the most common types of issues.

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Linux Unix Uses & Stats

Linux Unix is Used For:
Desktop Mainframe Computers Mobile Devices Embedded Devices
Difficulty
Popularity
Year Created
1991/1971
Pros
Performance:
Linux supports many efficient tools and operates them seamlessly. Because it's architecture is lightweight it runs faster than both Windows 8.1 and 10. 
 
Security:
Because Linux is an open-source software,  anyone can contribute code to help enhance the users’ experience i.e., adding features, fixing bugs, reducing security risks, and more.
 
 
Software Development:
The terminal in Linux is a *wild card*. You can do almost anything with it. This includes software installation, application and server configurations, file system management, and etc.
 
Large-scale:
Open-source projects benefit from having an attentive community. As a result, Linux is more secure than Windows. Instead of installing anti viruses to clean malware, you just have to stick to the recommended repositories. 
 
Efficient: 
Developers have the convenience of running servers, training machine learning models, accessing remote machines, and compiling and running scripts from the same terminal window. 
 
Free: 
Linux is free (you can put it on as many systems as you like) and you can change it to suit your needs.
Cons
Learning Curve: 
Linux is not for everyone, there is a learning curve in switching to Ubuntu. To actually learn Linux efficiently would take a user one to several years.
 
No Tech Support:
Unlike Windows, there isn’t a dedicated tech support, so getting help for things is up to you. 
 
Designer Compatabilty:
Linux is not as user friendly as Windows or as ‘straight out of the box design’ As an example for design choices, Adobe hasn’t released any of its products to Linux users. So it’s impossible to run them directly. The Ubuntu alternative is a free software called GIMP. 
 
Gaming Capabilities: 
Most games aren’t available in Linux. But that’s not to say you can’t make it happen, it's just not as easy.   
Linux Unix Job Market
Average Salary
$85k-$105k
Job Count
n/a
Top Job Locations

New York City
Boston
San Francisco 
Complimentary Skills to have along with Linux Unix
The following are types of jobs that may require Linux skills.  The top 15 job titles on Dice.com that mention Linux in their postings are:
- DevOps Engineer
- Software Engineer
- Java Developer
- Systems Engineer
- Systems Administrator
- Senior Software Engineer
- Network Engineer
- Python Developer
- Linux Systems Administrator
- Software Developer
- System Administrator
- Linux Administrator
- Linux Engineer
- Senior Java Developer
- C++ Developer

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