Linux Troubleshooting

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code.

QLG31

length.

5 days

type.

Instructor-Led

partner.

IBM

price.

$2,750

Linux system administrators can get an in-depth look at common and not so common Linux system problems. Linux system problems explored in this course are frequently encountered with the administration of Linux Systems. Take an approach to troubleshooting with a break-fix philosophy, with 25 percent lecture and 75 percent lab intensive content. Lab exercises contain a pool of over 120 simple and complex real-world troubleshooting scenarios. Lab work is flexible enough to satisfy the expectations of experienced to intermediate administrators through ranked difficulty of scenarios. You will find the approach of this course of structure with flexibility very rewarding. In lab tasks, choose the type of scenarios you would like to tackle, with hints, helps, and solutions to make learning very effective.

This course supports the latest versions of Red Hat Enterprise Linux, Fedora Core, SUSE Linux Professional, and SUSE Linux Enterprise Server

Durham/Raleigh, NC	jun.9.2008 - jun.13.2008	register
Austin, TX	aug.11.2008 - aug.15.2008	register

who can benefit

This is an intermediate course for individuals with Linux system administration experience who need to develop and enhance their system troubleshooting skills.

	Individuals who administer Red Hat Enterprise Linux or SUSE Linux Enterprise Server based systems
	Support engineers

prerequisites

You should have experience using and administering Linux fundamentals, such as an understanding of the Linux filesystem, process management, and the ability to manipulate and edit files. These are considered a must, and are NOT be covered in this course.

To obtain these skills, you should complete:

	Linux Basics and Installation (QLX02) or (LX020)
	Linux System Administration (QLX03) or (LX030)

skills gained

	Understand troubleshooting methodologies and best practices
	Understand and use common tools for assisting in troubleshooting, such as ethereal, tcpdump, strace, Red Hat Package Manager (RPM) queries, vmstat, and netstat
	Troubleshoot network services, such as Lightweight Directory Access Protocol (LDAP), Apache, File Transfer Protocol (FTP), Squid, Samba, Sendmail, Postfix, and Domain Name System (DNS)
	Perform a recovery and rescue of system environments
	Troubleshoot and resolve common system process and file systems errors
	Troubleshoot and resolve graphical interface errors
	Troubleshoot and resolve authentication and user account related errors

ibm education advantage program eligibility:

Yes - IBM Education Pack - online account

related courses, exams and materials

	before related training and products

	LX020 Linux Basics and Installation
	LX030 Linux System Administration I: Implementation

course content details

	Section 1

Troubleshooting methodology

	Section 2: Tools

	common troubleshooting tools
	RPM queries and verification
	src packages and spec files
	strace, ltrace, lsof, and fuser
	ipcs and ipcrm
	vmstat, iostat, mpstat, and sar
	ifconfig, ip, arp, and route
	name resolution
	netstat and rpcinfo
	nmap and nc
	tcpdump and ethereal

	Section 2: Tools - Lab

	exploring and documenting current system configuration state
	troubleshooting techniques with RPM, process related tools, and network related tools

	Section 3 : Rescue environments

	rescue procedures
	recovery examples

	Section 3 : Rescue environments - Lab

	using rescue disk
	using mount and chroot to access hard disk
	reinstalling the Master Boot Record (MBR) with grub-install
	Setting up networking statically
	mounting an NFS share
	installing an RPM using the root option

	Section 4

	Linux boot process
	booting Linux
	boot process troubleshooting
	process management and troubleshooting
	file systems concepts and troubleshooting
	backups concepts and troubleshooting

	Section 4 - Lab

	troubleshooting common system and daemon errors
	restoring files from backup
	booting scenarios: six exercises
	process scenarios: three exercises
	backup scenarios: one exercise

	Section 5

	networking commands review and troubleshooting
	Internet Protocol (IP) aliases versus virtual interfaces
	xinetd concepts and troubleshooting
	Transmission Control Protocol (TCP) wrappers concepts and troubleshooting
	iptables concepts and troubleshooting

	Section 5 - Lab

	iptables scenario: two exercises
	networking scenarios: four exercises
	TCP wrappers scenarios: two exercises
	xinetd scenarios: four exercises

	Section 6

	X11 concepts, troubleshooting, and server operation
	X11 concepts and troubleshooting
	syslog concepts and troubleshooting
	RPM concepts and troubleshooting
	Common UNIX Printing System (CUPS) troubleshooting
	at and cron troubleshooting

	Section 6 - Lab

	at and cron scenarios: four exercises
	CUPS scenerio: two exercises
	RPM scenarios: four exercises
	at/cron scenarios: four exercises
	syslog scenarios: three exercises
	X scenarios: seven exercises

	Section 7

	users and groups troubleshooting
	Pluggable Authentication Module (PAM) concepts and troubleshooting
	filesystem quotas and quotas troubleshooting
	File Access Control Lists (FACL) and Access Control Lists (ACL) for users or groups
	FACLs and troubleshooting

	Section 7 - Lab

	filesystem scenarios: six exercises
	PAM scenarios: four exercises
	quota scenarios: five exercises
	user and group scenarios: five exercises

	Section 8

	DNS concepts and troubleshooting
	Apache concepts and troubleshooting
	FTP concepts and troubleshooting
	Squid concepts and troubleshooting

	Section 8 - Lab

	Apache scenarios: five exercises
	DNS scenarios: four exercises
	FTP scenarios: two exercises
	Squid scenarios: four exercises

	Section 9

	Samba concepts and troubleshooting
	Sendmail concepts and troubleshooting
	Postfix concepts and troubleshooting
	Internet Message Access Protocol (IMAP) and Post Office Protocol (POP) concepts and troubleshooting

	Section 9 - Lab

	IMAP/POP scenarios: three exercises
	Postfix scenarios: five exercises
	Samba scenarios: three exercises
	Sendmail scenarios: four exercises

	Section 10

	Kernel modules and troubleshooting
	logical volume management and creating logical volumes
	Logical Volume Manager (LVM) deployment issues and troubleshooting
	Redundant Array of Independent Disks (RAID) concepts and troubleshooting
	LDAP and LDAP troubleshooting

	Section 10 - Lab

	Kernel module scenarios: three exercises
	LDAP scenarios: three exercises
	LVM scenario: 1 exercise
	Network Information Service (NIS) scenarios: two exercises
	RAID scenario: three exercise