Summary
This course is designed to give the Linux system administrator an in-depth look at common and not so common Linux system problems. This course takes the approach to troubleshooting with a "break-fix" philosophy, 25% lecture, and 75% 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. Students will find the approach of this course of structure with flexibility very rewarding. Lab tasks let students choose the type of scenarios they would like to tackle, with hints, helps, and solutions to make learning very effective.

Prerequisites
Linux Power User or equivalent, Linux System Administration or equivalent, Linux TCP/IP Services or equivalent

Content

We bring this 5-day course accelerated to 4 days to let you enjoy it at your own speed Day 1 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 Lab 2 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	Day 2 Lab 3 Using rescue disk Using mount and chroot to access hard disk Reinstalling the 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 Lab 4 Troubleshooting common system and daemon errors Restoring files from backup Booting Scenarios: 6 exercises Process Scenarios: 3 exercises Backup Scenarios: 1 exercise
Day 3 Section 5 Networking Commands Review and Troubleshooting IP Aliases vs Virtual Interfaces xinetd Concepts and Troubleshooting TCP Wrappers Concepts and Troubleshooting iptables Concepts and Troubleshooting Lab 5 iptables Scenario: 2 exercises Networking Scenarios: 4 exercises TCP Wrappers Scenarios: 2 exercises xinetd Scenarios: 4 exercises Section 6 X11 Concepts, Troubleshooting, and Server Operation X11 Concepts and Troubleshooting Syslog Concepts and Troubleshooting RPM Concepts and Troubleshooting CUPS Troubleshooting at and cron Troubleshooting Lab 6 at and cron Scenarios: 4 exercises CUPS Scenerio: 2 exercises RPM Scenarios: 4 exercises Syslog Scenarios: 3 exercises X Scenarios: 7 exercises	Day 4 Section 7 Users and Groups Troubleshooting PAM Concepts and Troubleshooting Filesystem Quotas and Quotas Troubleshooting FACL's and ACL's for users and/or groups File Access Control Lists and Troubleshooting Lab 7 Filesystem Scenarios: 6 exercises PAM Scenarios: 4 exercises Quota Scenarios: 5 exercises User and Group Scenarios: 5 exercises Section 8 DNS Concepts and Troubleshooting Apache Concepts and Troubleshooting FTP Concepts and Troubleshooting Squid Concepts and Troubleshooting Lab 8 Apache Scenarios: 5 exercises DNS Scenarios: 4 exercises FTP Scenarios: 2 exercises Squid Scenarios: 4 exercises
Day 4 (accelerated throughout the course) Section 9 Samba Concepts and Troubleshooting Sendmail Concepts and Troubleshooting Postfix Concepts and Troubleshooting IMAP and POP Concepts and Troubleshooting Lab 9 IMAP/POP Scenarios: 3 exercises Postfix Scenarios: 5 exercises Samba Scenarios: 3 exercises Sendmail Scenarios: 4 exercises Section 10 Kernel Modules and Troubleshooting Logical Volume Management and Creating Logical Volumes LVM Deployment Issues and Troubleshooting RAID Concepts and Troubleshooting Lightweight Directory Access Protocol and LDAP Troubleshooting Lab 10 Kernel Module Scenarios: 3 exercises LDAP Scenarios: 3 exercises LVM Scenario: 1 exercise NIS scenarios: 2 exercises RAID Scenario: 3 exercise

Course Materials
Provided courseware

Administrative Information
Course dates:

On Demand

Price 2.690,- € + VAT

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Phone: +32 (0)2 747 47 01

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