Linux Troubleshooting (GL314) Tanfolyam
Tanfolyamkód:
Tanfolyam hossza:
Képzés nyelve:
40 tanóra
Magyar, igény esetén angol
A képzés díja:
375 500 Ft + Áfa
Tanfolyam időpontok és jelentkezés
Zártcsoportos képzésre jelentkezem
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Jelentkezés időpont nélkül
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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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