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Tanfolyam hossza:
Képzés nyelve:
40 tanóra
Magyar, igény esetén angol
A képzés díja:
375 500 Ft + Áfa

Tanfolyam időpontok és jelentkezés

Zártcsoportos képzésre jelentkezem

Amennyiben munkatársaiddal zárt csoportos képzésen veszel részt és kaptál a tanfolyam időpont kódot, itt tudod leadni jelentkezésedet.

Jelentkezés időpont nélkül

Ha egyik időpont sem felel meg neked, de érdekel a tanfolyam, kérünk, hogy add le jelentkezésedet időpont nélkül! Új időpont felvételekor értesíteni fogunk.

The course is based on the idea that the best way to learn troubleshooting is to perform troubleshooting. 

This course is designed to give Linux administrators experience with both common and uncommon system problems.

This course is designed for intermediate to advanced users. Students should have already taken the U8583S "Linux Fundamentals", H7091S "Enterprise Linux Systems Administration", and H7092S "Enterprise Linux Networking Services",or have equivalent knowledge. A short refresher for each topic will be presented, but will not be discussed in depth.

Supported distributions:

  • Red Hat Enterprise Linux 7
  • SUSE Linux Enterprise 12

Approximately 25% of class time is spent on lecture, leaving 75% for intensive lab content. Class starts with a discussion of effective troubleshooting techniques. Tools and topics are gradually introduced over the course of the week, which students apply in self-paced labs. Students can choose from over 120 scenarios organized by topic and difficulty. Because each scenario is independent of the others, students can choose scenarios according to their interests and experience. Each scenario is designed to help students develop deeper understanding while exploring the problem. All scenarios include optional hints designed to reflect a realistic troubleshooting process, while only gradually revealing the solution. Students find the flexibility and challenge of this course very rewarding.

 

  

1. TROUBLESHOOTING METHODOLOGY

 The Troubleshooting Mindset
 Evaluating Possible Solutions
 Identifying and Implementing Change
 Define and Follow Policies
 Working with Others
 Finding Documentation
 Finding Help Online

 

2. TROUBLESHOOTING TOOLS

 Common Troubleshooting Tools
 RPM Queries
 RPM Verification
 SRPM and spec Files
 Hardware Discovery Tools
 Configuring New Hardware with hwinfo
 strace and ltrace
 lsof and fuser
 ipcs and ipcrm
 iostat, mpstat, and vmstat
 Using hdparm to Measure
 Troubleshooting with the ip command
 Name Resolution
 ss/netstat and rpcinfo
 nmap
 Netcat
 tcpdump and wireshark
 Lab tasks
 Determining the System's Configuration
 Troubleshooting with rpm
 Process Related Tools
 Network Tools

 

3. RESCUE ENVIRONMENTS

 Diagnostic/Recovery Runlevels
 Rescue Procedures
 Recovery: mount & chroot
 Recovery Examples
 Recovery: Network Utilities
 Lab tasks
 Recovery Runlevels
 Recovering Damaged MBR
 Recover from Deleted Critical Files

 

4. TOPIC GROUP 1

 Linux Boot Process
 System Boot Method Overview
 systemd System and Service Manager
 Using systemd
 Booting Linux on PCs
 Troubleshooting With GRUB 2
 Boot Process Troubleshooting
 Troubleshooting: Linux and Init
 Process Management
 Process Management Tools
 Troubleshooting Processes: top
 Filesystem Concepts
 Filesystem Troubleshooting
 Backup Concepts
 Backup Troubleshooting
 Backup Troubleshooting
 Lab tasks
 Troubleshooting Problems: Topic Group 1

 

5. TOPIC GROUP 2

 Networking Tools
 Linux Network Interfaces
 Networking Commands Review
 NetworkManager
 Networking Troubleshooting
 Networking Troubleshooting
 Virtual Interfaces/IP Aliases
 Network Teaming
 Xinetd Concepts
 Xinetd Troubleshooting
 TCP Wrappers Concepts
 TCP Wrappers Concepts
 TCP Wrappers Troubleshooting
 Netfilter/iptables Concepts
 Netfilter/iptables Troubleshooting
 Lab task 1 Troubleshooting Problems: Topic Group 2

 

6. TOPIC GROUP 3

 X11 Concepts
 X11 Server Operation
 X11 Troubleshooting
 Rsyslog Concepts
 System Logging
 systemd Journal
 systemd Journal's journactl
 Secure Logging with Journal's Log Sealing
 Syslog Troubleshooting
 RPM Concepts
 RPM Troubleshooting
 Common Unix Printing System (CUPS)
 CUPS Troubleshooting
 CUPS Troubleshooting
 at & cron
 at & cron Usage
 at & cron Troubleshooting
 Lab tasks 1 Troubleshooting Problems: Topic Group 3

 

7. TOPIC GROUP 4

 Users and Groups
 Users and Groups Troubleshooting
 PAM Concepts
 PAM Troubleshooting
 Filesystem Quotas
 Quotas Troubleshooting
 File Access Control Lists
 FACL Troubleshooting
 SELinux Concepts
 SELinux Troubleshooting
 SELinux Troubleshooting Continued
 LAB TASKS 1 Troubleshooting Problems: Topic Group 4

 

8. TOPIC GROUP 5

 Kernel Modules
 Kernel Modules Troubleshooting
 Logical Volume Management
 Creating Logical Volumes
 LVM Deployment Issues
 VG Migration, PV Resizing & Troubeshooting
 Software RAID Overview
 RAID Troubleshooting
 Multipathing Overview
 SAN Multipathing
 Multipath Configuration
 Multipathing Best Practices
 LDAP and OpenLDAP
 Troubleshooting OpenLDAP
 NIS and NIS+ (YP)
 NIS Troubleshooting Aids
 LAB TASKS 1 Troubleshooting Problems: Topic Group 5

 

9. TOPIC GROUP 6

 DNS Concepts
 DNS Troubleshooting
 DNS Troubleshooting
 Apache Concepts
 Apache Troubleshooting
 Apache Troubleshooting
 FTP Concepts
 FTP Troubleshooting
 Squid Concepts
 Squid Troubleshooting
 LAB TASKS 1 Troubleshooting Problems: Topic Group 6

 

10. TOPIC GROUP 7

 Samba Concepts
 Samba Troubleshooting
 Postfix Concepts
 Postfix Troubleshooting
 Postfix Troubleshooting
 Sendmail Concepts
 Sendmail Troubleshooting
 IMAP & POP Concepts
 IMAP/POP Troubleshooting
 LAB TASKS 1 Troubleshooting Problems: Topic Group 7

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