Server Infrastructure Enterprise Linux Systems Administration

Enterprise Linux Systems Administration

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  • Course Delivery: Virtual Classroom
  • Language: English

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Description

This fiver-day course introduces Linux and UNIX users to the tasks needed to administer their own system. The course begins with administering user accounts and groups, then moves into file, file system, and disk management. Various archiving commands are shown along with backup strategies. Students will learn about process and job scheduling as well as startup and shutdown procedures. The course finishes with security, system tuning, and networking topics. Generic system administration concepts are covered and related to specific vendors’ systems.
 

Course Objectives

  • Overview of System Administration
  • User Administration
  • File System Basics
  • Advanced File System Concepts
  • Disk Management
  • Backups
  • UNIX Processes
  • System Startup and Shutdown
  • UNIX System Security
  • Performance Monitoring and Tuning
  • IP Addressing
  • Configuring TCP/IP
  • The LP Print Service
  • Network Utilities    
  • Kernel Reconfiguration   
  • Overview of NIS
 

Topics Covered

1. Overview of System Administration
  • System Administrator Responsibilities
  • A Brief History of UNIX
  • Evolving Standards
  • Navigating the Documentation

2. User Administration
  • What is a ""user"" in UNIX?
  • The /etc/passwd File
  • Groups
  • The /etc/group File
  • Passwords
  • Adding Users
  • Deleting Users
  • Modifying User Attributes
  • The Login Process
  • /etc/profile and .profile
  • Communicating with Users: /etc/motd
  • Communicating with Users: The wall Command

3. File System Basics
  • The Hierarchy
  • Files
  • Directories
  • Device Files
  • Character and Block Devices
  • The/dev Directory
  • Links
  • Symbolic Links
  • A File System Tour
  • The df Command
  • The du Command
  • The find Command

4. Advanced File System Concepts
  • The Physical File System
  • The Inode File
  • File Storage in Disk Blocks
  • The Superblock
  • The Free List
  • Slices and File Systems
  • File System Types


5. Disk Management
  • Making a File System
  • The mkfs Command
  • Sharing File Systems
  • The mount Command
  • The fstab File
  • The fsck Command
  • The lost+found Directory
  • The prtvtoc Command

6. Backups
  • Backup Strategies
  • Backup Tools
  • The tar Command
  • The cpio Command
  • The dump Command
  • Network Backup Strategies

7. UNIX Processes
  • Overview of Processes
  • Process Space
  • Process Table
  • The fork/exec Mechanism
  • The ps Command
  • Background Processes
  • The kill Command
  • Scheduling Jobs
  • The cron Daemon
  • The at Command
  • The crontab Command
  • Format of cron Files
  • Access to Scheduling Facilities

8. System Startup and Shutdown
  • Run States
  • The init Daemon
  • /etc/inittab
  • The inittab Actions
  • The init Command
  • The rc Scripts
  • Single-User Mode
  • The shutdown Command

9. UNIX System Security
  • Security Overview
  • Physical Security
  • Account Security
  • SUID and SGID Settings
  • File and Directory Permissions
  • Software Security

10. Performance Monitoring and Tuning
  • Performance Issues
  • Methods of Improving Performance
  • Swapping and Paging
  • The sar Utility
  • Using sar
  • The truss Command

11. IP Addressing
  • Basic Network Needs
  • Ethernet Addresses
  • IP Addresses
  • DNS vs /etc/hosts to Resolve IP Addresses
  • Network Addresses
  • Network Classes
  • Broadcast Addresses
  • Subnet Masks

12. Configuring TCP/IP
  • The /etc/hosts File
  • The ifconfig Command
  • The /etc/services File
  • The inetd Daemon
  • The /etc/inetd.conf File
  • Simple TCP/IP Troubleshooting: The ping Command
  • Simple TCP/IP Troubleshooting: The nestat Command

13. The LP Print Service
  • Printing Overview
  • The lp Command
  • The lpstat Command
  • The cancel Command
  • Adding a Printer
  • The lpadmin Command
  • The accept and reject Commands
  • The enable and disable Commands
  • Adding a Networked Printer
  • Other Administrative Commands

14. Appendix A Network Utilities
  • Network Services
  • telnet - Terminal Emulator
  • ftp - File Transfer
  • rcp - Remote Copy
  • rlogin - Remote Login
  • rsh - Remote Commands

15. Appendix B Kernel Reconfiguration
  • Overview of Reconfiguration
  • Kernel Parameters
  • Steps to Reconfigure a Kernel
  • Specific Steps for SVR4

16. Appendix C Overview of NIS
  • What is NIS?
  • Use NISNIS Design and Implementation
  • NIS Maps
  • Configuring NIS

 

Prerequisites

Students should already be comfortable working in a Linux or Unix environment. Fundamentals such as the Linux filesystem, process management, and how to edit files will not be covered in class. An understanding of network concepts, and the TCP/IP protocol suite is helpful. These skills are taught in the GL120 ""Linux Fundamentals"" course.

 

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