RED
HAT ENTERPRISE LINUX DIAGNOSTICS AND TROUBLESHOOTING (RH342)
Red Hat Enterprise Linux Diagnostics and Troubleshooting course
(RH342) provides system administrators with the tools and techniques they need
to successfully diagnose, and fix, a variety of potential issues. To solve
problems in various subsystems to diagnose and fix common issues.
COURSE OVERVIEW:
Students
will learn how to apply the scientific method to a structured form of
troubleshooting. This approach is then used troubleshooting various types of
problems, including boot issues, hardware issues, storage issues, RPM issues,
network issues, third-party application issues, security issues, and kernel
issues. At the end of the course students can complete various comprehensive
review labs to test their skills.
COURSE SUMMARY:
ü
Introduction to
troubleshooting
ü
Troubleshoot boot
issues, Identify hardware issues
ü
Troubleshoot storage
issues, Troubleshoot RPM issues
ü
Troubleshoot network
issues, Troubleshoot application issues
ü Deal with security issues, Troubleshoot kernel issues
PREREQUISITES:
ü
Have earned a Red
Hat Certified System Administrator (RHCSA) or have similar experience
ü
It is recommended
that peoples have earned a Red Hat Certified Engineer (RHCE) or have similar
experience
ü
System administration knowledge under Red Hat Enterprise Linux,
including:
Ø
Installation
Ø
Service management (using service and chkconfig, for example)
Ø
Basic system monitoring
(using ps and top and perhaps meminfo and the /proc file system)
Ø
File system management
(using fdisk and mkfs)
Basic troubleshooting (including managing log
files and perhaps using hardware probing tools, such as ethtool and lspci)
COURSE CONTENTS:
Understand
and employ general methods for troubleshooting
Collect system information to aid in troubleshooting
Consult documentation
resources to aid in troubleshooting
Monitor systems for
vital characteristics
Configure systems to
send log messages to a centralized host
Diagnose
and troubleshoot system start up issues
Identify and resolve service failures affecting boot
Regain root control of a system
Troubleshoot boot issues
Identify hardware and hardware problems
Manage kernel modules and their
parameters
Diagnose
and troubleshoot file system issues
Recover corrupted
file systems
Recover mis-configured or broken LVM
configurations
Recover data from encrypted file
systems
Identify and fix iSCSI issues
Resolve package management issues
Resolve package
management dependency issues
Recover a corrupted RPM database
Identify and restore changed files
Troubleshoot
and fix network connectivity issues
Use standard tools to verify network
connectivity
Identify and fix network connectivity
issues
Inspect network traffic to aid
troubleshooting
Diagnose application issues
Identify library dependencies for third-party software
Identify if an application suffers from
memory leaks
Use standard tools to debug an
application
Identify and fix issues related to
SELinux
Identify and fix authentication issues
Identify and fix pluggable authentication module (PAM) issues
Identify and fix LDAP and Kerberos
identity management issues
Gather information to aid third party investigation of issues
Create kernel crash
dumps
Compile and execute System Tap modules
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