Enterprise Linux System Administration

Course: LNXADM

Duration: 5 Days

Level: I

Course Summary

The Enterprise Linux System Administration class is an in-depth course that explores installation, configuration and maintenance of Linux systems. The course focuses on issues universal to every workstation and server. The course material is designed to provide extensive hands-on experience.

Topics include: installation and configuration; the boot process; user and group administration; filesystem administration, including quotas, FACLs, RAID and LVM; task automation; client networking; SELinux; software management; log files; troubleshooting; and more.

The course covers both RedHat and SuSE Enterprise distributions, and students can choose to use either distribution during hands-on sessions.

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Topics Covered In This Course

Linux Hardware Discovery, Interaction, and Control

Hardware Discovery Tools
Configuring New Hardware with hwinfo
Hardware and System Clock
Console
Virtual Terminals
Serial Ports
SCSI Devices
USB Devices
USB Configuration
Common UNIX Printing System
Defining a Printer
Managing Optical Media
Tape Drives
Tape Libraries
Managing Linux Device Files
Kernel Hardware Info - /sys/
/sys/ Structure
udev
Kernel Modules
Configuring Kernel Components and Modules
Handling Module Dependencies
Configuring the Kernel via /proc/

Boot Process and SysV Init

Booting Linux on PCs
GRUB Configuration
Boot Parameters
Initial ramdisk
/sbin/init
System Init Styles
Linux Runlevels
/etc/inittab
/etc/rc.d/rc.sysinit
SUSE /etc/init.d/boot
Runlevel Implementation
System Configuration Files
Configuration Utilities
Novell's Configuration Utilities
Typical SysV Init Script
The /etc/rc.local File
The /etc/init.d/*.local Files
Managing Daemons
Controlling Service Startup
Shutdown and Reboot

Software Maintenance

Managing Software
RPM Features
RPM Architecture
RPM Package Files
Working With RPMs
Querying and Verifying with rpm
Updating the Kernel RPM
Managing Software Dependencies
Using the YUM command
Using the Zypper command
YUM package groups
Zypper Services and Catalogs
Dealing With RPM & YUM Digest Changes
Configuring YUM
Yum Plugins
YUM Repositories
Compiling/Installing from Source
Manually Installed Shared Libraries
Installing Source RPM Packages

Filesystem Administration

Partitioning Disks with fdisk
Partitioning Disks with parted
Filesystem Creation
Mounting Filesystems
Filesystem Maintenance
Persistent Block Devices
Resizing Filesystems
Swap
Two Types of Disk Space
Determining Disk Usage With df and du
Configuring Disk Quotas
Setting Quotas
Viewing and Monitoring Quotas
Filesystem Attributes
Backup Software
Backup Examples

LVM & RAID

Logical Volume Management
Implementing LVM
Creating Logical Volumes
Manipulating VGs & LVs
Advanced LVM Concepts
system-config-lvm
SLES Graphical Disk Tool
RAID Concepts
Array Creation with mdadm
Software RAID Monitoring
Software RAID Control and Display

Remote Storage Administration

Remote Storage Overview
Remote Filesystem Protocols
Remote Block Device Protocols
File Sharing via NFS
NFSv4
NFS Clients
NFS Server Configuration
Implementing NFSv4
AutoFS
AutoFS Configuration
Accessing Windows/Samba Shares from Linux
SAN Multipathing
Multipath Configuration
Multipathing Best Practices
iSCSI Architecture
Open-iSCSI Initiator Implementation
iSCSI Initiator Discovery
iSCSI Initiator Node Administration
Mounting iSCSI Targets at Boot
iSCSI Multipathing Considerations

User/Group Administration

User and Group Concepts
User Administration
Modifying Accounts
Group Administration
Password Aging
Default User Files
Controlling Logins
Manual DS Client Configuration
system-config-authentication
SLES Graphical DS Client Configuration
System Security Services Daemon (SSSD)

Pluggable Authentication Modules (PAM)

PAM Overview
PAM Module Types
PAM Order of Processing
PAM Control Statements
PAM Modules
pam_unix.so
pam_unix2.so
pam_nologin.so
pam_limits.so
pam_wheel.so
pam_xauth.so

Security Administration

Security Concepts
Tightening Default Security
SuSE Security Checker
Security Advisories
File Access Control Lists
Manipulating FACLs
Viewing FACLs
Backing Up FACLs
File Creation Permissions with umask
User Private Group Scheme
Alternatives to UPG
AppArmor
SELinux Security Framework
SELinux Modes
SELinux Commands
Choosing an SELinux Policy
SELinux Booleans
Permissive Domains
Graphical SELinux Policy Tools

Process Administration

Automating Tasks
at/batch
cron
The crontab Command
crontab Format
/etc/cron.*/ Directories
anacron
Viewing Processes
Managing Processes
Tuning Process Scheduling
Process Accounting
Enabling Process Accounting
Setting Resource Limits via ulimit

Basic Networking

IPv4 Fundamentals
TCP/UDP Fundamentals
Linux Network Interfaces
Ethernet Hardware Tools
Network Configuration with ip Command
Configuring Routing Tables
IP to MAC Address Mapping with ARP
Starting and Stopping Interfaces
NetworkManager
DNS Clients
DHCP Clients
system-config-network{tui,cmd}
SUSE YaST Network Configuration Tool
Network Diagnostics
Information from netstat
Managing Network-Wide Time
Continual Time Sync with NTP
Configuring NTP Clients
Useful NTP Commands

Advanced Networking

Multiple IP Addresses
Configuring a DHCP server
Enabling IPv6
Interface Bonding
Interface Bridging
802.1q VLANS
Tuning Kernel Network Settings

The X Window System

The X Window System
X Modularity
X.Org Drivers
Configuring X Manually
Automatic X Configuration
Automatic X Configuration - SLES
Xorg and Fonts
The X Font Server
Installing Fonts for Modern Applications
Installing Fonts for Legacy Applications
The X11 Protocol and Display Names
Display Managers and Graphical Login
Starting X Apps Automatically
X Access Control
Remote X Access (historical/insecure approach)
Remote X Access (modern/secure approach)
XDMCP
Remote Graphical Access With VNC and RDP
Specialized X Servers

Log File Administration

System Logging
Syslog-ng
Rsyslog
/etc/rsyslog.conf
Log Management
Log Anomaly Detector

Monitoring & Troubleshooting

System Status - Memory
System Status - I/O
System Status - CPU
Performance Trending with sar
Troubleshooting Basics: The Process
Troubleshooting Basics: The Tools
strace and ltrace
Common Problems
Incorrect File Permissions
Inability to Boot
Typos in Configuration Files
Corrupt Filesystems
Rescue Environment
SUSE Rescue Environment

Pre-Installation Considerations

Pre-Installation Considerations
Hardware Compatibility
Multi-OS Booting
Partition Considerations
Filesystem Planning
Selecting a Filesystem

Installing RHEL6

Anaconda: An Overview
Anaconda: Booting the System
Anaconda: Common Boot Options
Anaconda: Loading Anaconda and Packages
Anaconda: Storage Options
Anaconda: Troubleshooting
FirstBoot
Kickstart
A Typical Install

Installing SLES11

Installation Choices
DVD-ROM Install Media
Network Installation
SLP for SUSE Linux Installation
Local Hard Drive Installation
The linuxrc Program
Install Program Interface
Installation Diagnostics
Language/Keyboard Selection and EULA
Installation Mode
Clock and Time Zone
Desktop Selection
Server Base Scenario
The YaST Installer Design
Disk Partitioning
Boot Loader Configuration
Software Package Selection
Kernel Crash Dump Configuration
Confirmation and File Installation
Setting the Root Password
Hostname and Domain Name
Network Configuration
SLES Services Configuration
Adding a User Account
Release Notes
Final Installation Hub
Installation Complete and AutoYaST2 "Cloning"
Using AutoYaST2 files
Creating AutoYaST2 Files
linuxrc Automation

Xen Virtualization

Virtualization: What and Why?
What is Xen?
Xen Architecture
Xen Deployment Options and Considerations
Xen Networking
Live Migration of Xen Virtual Servers
xend Configuration
Guest Config Files
The xm Command
Common xm Usage
Xen Configuration Tools

Linux Kernel Compilation

Why Compile?
Getting Kernel Source
Preparing to Compile
Configuring Kernel Compilation Options
Available Kernel Compile Options
Compiling the Kernel
Install Compiled Kernel Modules
Installing the Kernel
Tips and Tricks

Recommended 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.

Training Style

Combination of lecture sessions and hands-on practice.

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Every student attending a Verhoef Training class will receive a certificate good for $100 toward their next public class taken within a year.

You can also buy "Verhoef Vouchers" to get a discounted rate for a single student in any of our public or web-based classes. Contact your account manager or our sales office for details.

Schedule For This Course
There are currently no public sessions scheduled for this course. We can schedule a private class for your organization just a couple of weeks from now. Or we can let you know the next time we do schedule a public session.

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