This course will teach the commands and methods needed to perform
troubleshooting networking, security, and performance issues on
a functioning RHEL5 system. The course will also use a problem
solving approach in the lab exercises to teach system administrators
a methodology of: discovery, analysis, tools, and solution in each
area that is covered.
This course is the equivalent to Red Hat course 142.
Systems: Red Hat Enterprise Linux Version 5 (all update levels)
Linux Training Prerequisites
It is assumed that the participant has successfully completed the
Red Hat Linux Essentials (RH 033) and RHEL5 Systems Administration
Essentials (RH 131) courses, or has equivalent system time
as a user and a working systems administrator
Linux Training Course duration
This course normally requires three (3) days, approximately 60%
lecture, and 40% lab time.
Linux Training Course Objectives
On completion of this course, a systems administrator should be able to
use a methodology to analyze and solve problems with system components,
along with usage of tools to proactively identify issues as they occur (or
before they occur).
Linux Training Course outline
Review of System Concepts for System Administrators
System administrator functions
Using the root account
root access via sudo
Using the RHEL5 administrative graphical interfaces
Manipulating root account history files
Installing and using webmin for remote administration
Overview of Troubleshooting Techniques
methodologies
available tools
in RHEL5 distributions
third party
freeware
system-specific ( "home-grown" )
Startup Time Issues and Resolutions
review of boot time components
troubleshooting GRUB problems
building GRUB recovery boot media
alternate methods of booting
single user mode
recovery or installation media
fixing problems with filesystem structures
resolving issues with LVM boot file systems
RHEL5 Hardware Configuration
location of key files and descriptions
tools to manipulate hardware configuration files
understanding hardware discovery and drivers
diagnostic tools to test hardware components
RHEL5 Software Configuration
location of key files and descriptions
tools to manipulate configuration files
Networking Troubleshooting Considerations
review of networking hardware / software components
techniques to manually configure network interfaces
software IP configuration / testing using ifconfig
testing areas and tools
network connectivity
server configuration (files)
DNS, VSFTPD, DHCPD, SAMBA
available tools
Security Issues
review of security in all major component areas
impact of selected security level
default from installation
SELinux
via "hardening" tools
PAM
security role in RHEL5
functional areas
files and configuration
resolving issues with PAM controls
security monitoring / troubleshooting tools
Application Troubleshooting
writing utilities to sense problems
physical memory usage
paging file
disk and network I/O bandwidth
Resources for Troubleshooting Information
on-line searchable repositories
available diagnostic tools (summary)
Red Hat support options
Please contact your training representative for more details on having this course delivered onsite or online
