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UNIX and Linux Training









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Linux Optimization and Troubleshooting

COURSE TYPE

Practitioner

Course Number

1901

Duration

4 Days

Enroll

About This Course: As organizations increasingly adopt Linux, they must ensure rapid response time to issues that can affect system availability and cause costly downtime. In this course, you diagnose and correct booting and configuration issues using Red Hat Linux, ensure optimal resource allocation and availability, and apply a series of proven tools and techniques to troubleshoot real-world problems.

You Will Learn How To

  • Troubleshoot Linux with effective tools and techniques
  • Rescue an unbootable system
  • Recover and tune local and remote file systems
  • Optimize Linux application performance
  • Identify and fix network errors and bottlenecks
  • Secure applications with new SELinux policies

Important Course Information

Requirements:

  • Knowledge of Linux at the level of:

Software:

  • This course uses Red Hat Enterprise Linux
  • Concepts taught are applicable to all Linux distributions

Course Outline

  • Introduction to Troubleshooting
  • Investigating different failure modes
  • Reviewing troubleshooting methods
  • Documenting solutions and configurations
  • Booting the System

Starting the boot sequence

  • Fixing kernel load errors
  • Distinguishing BIOS from UEFI requirements

Recreating a working boot environment

  • Rebuilding the RAM drive with correct drivers
  • Recovering the root file system
  • Optimizing and Recovering File Systems

Managing local file system integrity

  • Locating disks and LUNs by path and ID
  • Running fsck on live file systems
  • Selecting the correct file system type

Improving file system performance

  • Detecting incorrect queueing algorithms
  • Tuning the cache for the application load

Finding file system errors in logical volumes

  • Implementing snapshots into the troubleshooting process
  • Remounting corrupt LVM file systems

Extending and resizing live file systems

  • Increasing storage space with online resizing
  • Adding physical and logical volumes effectively
  • Managing Packages and Processes

Rebuilding packages for compatibility

  • Satisfying legacy and foreign RPM dependencies
  • Adapting the spec file and rebuilding the package

Measuring application resource usage

  • Identifying application bottlenecks in disks, processors and memory usage
  • Monitoring system performance
  • iostat
  • rlimit
  • top
  • strace
  • nfsstat
  • vmstat

Allocating resources to applications

  • Setting limits for specific applications
  • Ensuring optimal system performance
  • Troubleshooting the Linux Network Stack

Applying troubleshooting tools

  • Capturing traffic with graphical and command-line tools
  • Working around vendor distribution limitations

Tuning network kernel parameters

  • Pinpointing parameters affecting performance
  • Maximizing network throughput

Adjusting Ethernet drivers

  • Evaluating driver settings for MTU and protocol offload
  • Tailoring kernel modules for various traffic profiles

Restoring network connectivity through the firewall

  • Enabling firewall logging to isolate application failures
  • Extending rules with iptables

Diagnosing Network File System (NFS) errors

  • Gathering statistics to uncover NFS shortcomings
  • Modifying communication buffer settings
  • Auditing and Logging with SELinux and Rsyslog

Fine-tuning SELinux to enable applications

  • Restoring security contexts to re-enable access
  • Translating audit events to policy changes
  • Writing and compiling an SELinux policy

Collecting remote event information with Rsyslog

  • Setting up remote logging of errors and failures
  • Centralizing log collection and analysis

Detecting unauthorized changes with Advanced Intrusion Detection Environment (AIDE)

  • Generating the security database
  • Exposing configuration and file changes
  • Integrating Linux with Active Directory

Authenticating with Lightweight Directory Access Protocol (LDAP)

  • Migrating Pluggable Authentication Modules (PAM) and nsswitch.conf
  • Resolving user and group ID mapping errors

Finding and fixing Kerberos errors

  • Kerberizing user authentication
  • Debugging Active Directory connectivity
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Course Schedule

Attend this live, instructor-led course In-Class or Online via AnyWare.

Hassle-Free Enrollment: No advance payment required.
Tuition due 30 days after your course.

Feb 7 - 10 Rockville, MD/AnyWare Enroll Now

How would you like to attend?

Live, Online via AnyWare
In-Class

Apr 18 - 21 Alexandria, VA/AnyWare Enroll Now

How would you like to attend?

Live, Online via AnyWare
In-Class

Jul 11 - 14 AnyWare Enroll Now

How would you like to attend?

Live, Online via AnyWare

Aug 15 - 18 Alexandria, VA/AnyWare Enroll Now

How would you like to attend?

Live, Online via AnyWare
In-Class

Guaranteed to Run

Bring this Course to Your Organization and Train Your Entire Team
For more information, call 1-888-843-8733 or click here

Tuition

Standard

$2990

Government

$2659

Course Tuition Includes:

After-Course Instructor Coaching
When you return to work, you are entitled to schedule a free coaching session with your instructor for help and guidance as you apply your new skills.

After-Course Computing Sandbox
You'll be given remote access to a preconfigured virtual machine for you to redo your hands-on exercises, develop/test new code, and experiment with the same software used in your course.

Free Course Exam
You can take your course exam on the last day of your course and receive a Certificate of Achievement with the designation "Awarded with Distinction."

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Questions

Call 1-888-843-8733 or click here »

An experienced training advisor will happily answer any questions you may have and alert you to any tuition savings to
which you or your organization may be entitled.

Training Hours

Standard Course Hours: 9:00 am – 4:30 pm
*Informal discussion with instructor about your projects or areas of special interest: 4:30 pm – 5:30 pm


FREE Online Course Exam (if applicable) – Last Day: 3:30 pm – 4:30 pm
By successfully completing your FREE online course exam, you will:

  • Have a record of your growth and learning results.
  • Bring proof of your progress back to your organization
  • Earn credits toward industry certifications (if applicable)
  • Make progress toward one or more Learning Tree Specialist & Expert Certifications (if applicable)

Enhance Your Credentials with Professional Certification

Learning Tree's comprehensive training and exam preparation guarantees that you will gain the knowledge and confidence to achieve professional certification and advance your career.

This course is approved by CompTIA for continuing education units (CEUs). For additional information and to confirm which courses are eligible towards your CompTIA certification, click here.

Earn 23 Credits from NASBA

This course qualifies for 23 CPE credits from the National Association of State Boards of Accountancy CPE program. Read more ...

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