ENTERPRISE LINUX SYSTEM ADMINISTRATION (RED HAT™ 7 WITH REF TO SUSE 12) – GTU12

Course Description

linuxThis is an in-depth course that explores installation, configuration and maintenance of Linux systems. The course focuses on issues universal to every workstation and server. Like all GuruTeam courses, the course material is designed to provide extensive hands-on experience. Topics include: installation and configuration; the boot process; user and group administration; filesystem administration, including quotas, FACLs, RAID and LVM; task automation; client networking; SELinux; software management; log files; troubleshooting; and more.

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Duration

5 days

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Target Audience

This course is suitable for novice Linux System Administrators who need to acquire administration knowledge of the key administrative, networking, performance and security tasks required on Linux within the Enterprise.

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Course Prerequisites

Students should already be comfortable working in a Linux or Unix environment. Fundamentals such as the Linux filesystem, process management, and how to edit files will not be covered in class. An understanding of network concepts, and the TCP/IP protocol suite is helpful. These skills are taught in:

If you have any questions or doubts as to whether you meet the pre-requisites for this course, or indeed are wondering which course best suits you, please contact us to discuss your suitability for course attendance.

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Suggested Follow on Courses

There are a number of options of suitable follow-on courses, depending on your business needs. Please contact us for further details.

Supported Distributions

  • Red Hat Enterprise Linux 7
  • Oracle Linux 7
  • SUSE Linux Enterprise 12

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Course Content

1. LINUX KERNEL & DEVICES

  1. Hardware Discovery Tools
  2. Configuring New Hardware with hwinfo
  3. Kernel Hardware Info /sys/
  4. /sys/ Structure
  5. udev
  6. Managing Linux Device Files
  7. List Block Devices
  8. SCSI Devices
  9. USB Devices
  10. USB Architecture
  11. Kernel Modules
  12. Configuring Kernel Components and Modules
  13. Handling Module Dependencies
  14. Configuring the Kernel via /proc/
  15. Console
  16. Virtual Terminals
  17. Keyboard & locale configuration
  18. Serial Ports
  19. Random Numbers and /dev/random

LAB TASKS

  1. Adjusting Kernel Options
  2. Linux Kernel Driver Compilation
  3. Introduction to Troubleshooting Labs
  4. Troubleshooting Practice: Kernel Modules

   2. SYSTEMD OVERVIEW

  1. System Boot Method Overview
  2. systemd System and Service Manager
  3. systemd Targets
  4. Using systemd
  5. Linux Runlevels Aliases
  6. Legacy Support for SysV init

LAB TASKS

  1. Managing Services With Systemd’s systemctl
  2. Creating a systemd unit file

3. GRUB2/SYSTEMD BOOT PROCESS

  1. Booting Linux on PCs
  2. GRUB 2
  3. GRUB 2 Configuration
  4. GRUB 2 Security
  5. Boot Parameters
  6. Initial RAM Filesystem
  7. init
  8. Systemd local-fs.target and sysinit.target
  9. Systemd basic.target and multi-user.target
  10. Legacy local bootup script support
  11. System Configuration Files
  12. RHEL7 Configuration Utilities
  13. SLES12 Configuration Utilities
  14. Shutdown and Reboot

LAB TASKS

  1. Boot Process
  2. Booting directly to a bash shell
  3. GRUB Command Line
  4. Basic GRUB Security
  5. Troubleshooting Practice: Boot Process

4. SOFTWARE MAINTENANCE

  1. Managing Software
  2. RPM Features
  3. RPM Architecture
  4. RPM Package Files
  5. Working With RPMs
  6. Querying and Verifying with RPM
  7. Updating the Kernel RPM
  8. Dealing With RPM & Yum Digest Changes
  9. Yum Plugins & RHN Subscription Manager
  10. YUM Repositories
  11. YUM Repository Groups
  12. Compiling/Installing from Source
  13. Manually Installed Shared Libraries
  14. Rebuilding Source RPM Packages

LAB TASKS

  1. Managing Software with RPM
  2. Creating a Custom RPM Repository
  3. Querying the RPM Database
  4. Installing Software via RPM & Source and Rebuilding SRPMs
  5. Troubleshooting Practice: Package Management

 

5. LOCAL STORAGE ADMINISTRATION

  1. Partitioning Disks with fdisk & gdisk
  2. Resizing a GPT Partition with gdisk
  3. Partitioning Disks with parted
  4. Filesystem Creation
  5. Persistent Block Devices
  6. Mounting Filesystems
  7. Resizing Filesystems
  8. Filesystem Maintenance
  9. Managing an XFS Filesystem
  10. Swap
  11. Filesystem Structures
  12. Determining Disk Usage With df and du
  13. Configuring Disk Quotas
  14. Setting Quotas
  15. Viewing and Monitoring Quotas
  16. Filesystem Attributes

LAB TASKS

  1. Creating and Managing Filesystems
  2. Hot Adding Swap
  3. Setting User Quotas

6. LVM & RAID

  1. Logical Volume Management
  2. Implementing LVM
  3. Creating Logical Volumes
  4. Activating LVM VGs
  5. Exporting and Importing a VG
  6. Examining LVM Components
  7. Changing LVM Components
  8. Advanced LVM Overview
  9. Advanced LVM: Components & Object Tags
  10. Advanced LVM: Automated Storage Tiering
  11. Advanced LVM: Thin Provisioning
  12. Advanced LVM: Striping & Mirroring
  13. Advanced LVM: RAID Volumes
  14. gnome-disk-utility
  15. SLES Graphical Disk Tool
  16. RAID Concepts
  17. Array Creation with mdadm
  18. Software RAID Monitoring
  19. Software RAID Control and Display

LAB TASKS

  1. Creating and Managing LVM Volumes
  2. Troubleshooting Practice: LVM
  3. Creating and Managing a RAID-5 Array

7. REMOTE STORAGE ADMINISTRATION

  1. Remote Storage Overview
  2. Remote Filesystem Protocols
  3. Remote Block Device Protocols
  4. File Sharing via NFS
  5. NFSv4+
  6. NFS Clients
  7. NFS Server Configuration
  8. YaST NFS Server Administration
  9. Implementing NFSv4
  10. AutoFS
  11. AutoFS Configuration
  12. Accessing Windows/Samba Shares from Linux
  13. SAN Multipathing
  14. Multipath Configuration
  15. Multipathing Best Practices
  16. iSCSI Architecture
  17. Open-iSCSI Initiator Implementation
  18. iSCSI Initiator Discovery
  19. iSCSI Initiator Node Administration
  20. Mounting iSCSI Targets at Boot
  21. iSCSI Multipathing Considerations

LAB TASKS

  1. Using autofs
  2. NFS Server Configuration
  3. iSCSI Initiator Configuration
  4. Multipathing with iSCSI

8. USER/GROUP ADMINISTRATION

  1. Approaches to Storing User Accounts
  2. User and Group Concepts
  3. User Administration
  4. Modifying Accounts
  5. Group Administration
  6. Password Aging
  7. Default User Files
  8. Controlling Login Sessions
  9. RHEL DS Client Configuration
  10. SLES DS Client Configuration
  11. System Security Services Daemon (SSSD)

LAB TASKS

  1. User and Group Administration
  2. Using LDAP for Centralized User Accounts
  3. Troubleshooting Practice: Account Management

9. PLUGGABLE AUTHENTICATION MODULES (PAM)

  1. PAM Overview
  2. PAM Module Types
  3. PAM Order of Processing
  4. PAM Control Statements
  5. PAM Modules
  6. pam_unix
  7. pam_nologin.so
  8. pam_limits.so
  9. pam_wheel.so
  10. pam_xauth.so

LAB TASKS

  1. Restricting superuser access to wheel group membership
  2. Using pam_nologin to Restrict Logins
  3. Setting Limits with the pam_limits Modules
  4. Using pam_limits to Restrict Simultaneous Logins

10. SECURITY ADMINISTRATION

  1. Security Concepts
  2. Tightening Default Security
  3. SuSE Security Checker
  4. Security Advisories
  5. Fine Grained Authorizations with Polkit
  6. File Access Control Lists
  7. Manipulating FACLs
  8. Viewing FACLs
  9. Backing Up FACLs
  10. File Creation Permissions with umask
  11. User Private Group Scheme
  12. Alternatives to UPG
  13. AppArmor
  14. SELinux Security Framework
  15. SELinux Modes
  16. SELinux Commands
  17. Choosing an SELinux Policy
  18. SELinux Booleans
  19. Permissive Domains
  20. SELinux Policy Tools
  21. SUSE Basic Firewall Configuration
  22. FirewallD

LAB TASKS

  1. User Private Groups
  2. Using Filesystem ACLs
  3. Exploring AppArmor
  4. Exploring SELinux Modes
  5. SELinux File Contexts

11. BASIC NETWORKING

  1. IPv4 Fundamentals
  2. TCP/UDP Fundamentals
  3. Linux Network Interfaces
  4. Ethernet Hardware Tools
  5. Network Configuration with ip Command
  6. Configuring Routing Tables
  7. IP to MAC Address Mapping with ARP
  8. Starting and Stopping Interfaces
  9. NetworkManager
  10. DNS Clients
  11. DHCP Clients
  12. SUSE YaST Network Configuration Tool
  13. Network Diagnostics
  14. Information from ss and netstat
  15. Hardware and System Clock
  16. Managing Network-Wide Time
  17. Continual Time Sync with NTP
  18. Configuring NTP Clients
  19. Useful NTP Commands

LAB TASKS

  1. Network Discovery
  2. Basic Client Networking
  3. NTP Client Configuration

12. ADVANCED NETWORKING

  1. Multiple IP Addresses
  2. Configuring a DHCP server
  3. IPv6
  4. Interface Aggregation
  5. Interface Bonding
  6. Network Teaming
  7. Interface Bridging
  8. 802.1q VLANS
  9. Tuning Kernel Network Settings

LAB TASKS

  1. Multiple IP Addresses Per Network Interface
  2. Configuring IPv6
  3. Troubleshooting Practice: Networking

13. LOG FILE ADMINISTRATION

  1. System Logging
  2. systemd Journal
  3. systemd Journal’s journactl
  4. Secure Logging with Journal’s Log Sealing
  5. gnome-system-log
  6. Rsyslog
  7. /etc/rsyslog.conf
  8. Log Management
  9. Log Anomaly Detector
  10. Sending logs from the shell

LAB TASKS

  1. Using the systemd Journal
  2. Setting up a Full Debug Logfile
  3. Remote Syslog Configuration
  4. Remote Rsyslog TLS Configuration

14. MONITORING & TROUBLESHOOTING

  1. System Status – Memory
  2. System Status – I/O
  3. System Status – CPU
  4. Performance Trending with sar
  5. Determining Service to Process Mapping
  6. Realtime Monitoring of Resources — Cgroups
  7. Troubleshooting Basics: The Process
  8. Troubleshooting Basics: The Tools
  9. strace and ltrace
  10. Common Problems
  11. Troubleshooting Incorrect File Permissions
  12. Inability to Boot
  13. Typos in Configuration Files
  14. Corrupt Filesystems
  15. RHEL7 Rescue Environment
  16. SUSE Rescue Environment

LAB TASKS

  1. System Activity Reporter
  2. Cgroup for Processes
  3. Recovering Damaged MBR

A. PRE-INSTALLATION CONSIDERATIONS

  1. Pre-Installation Considerations
  2. Hardware Compatibility
  3. Multi-OS Booting
  4. Partition Considerations
  5. Filesystem Planning
  6. Selecting a Filesystem

B. INSTALLING RHEL7

  1. Anaconda: An Overview
  2. Anaconda: Booting the System
  3. Anaconda: Common Boot Options
  4. Anaconda: Loading Anaconda and Packages
  5. Anaconda: Storage Options
  6. Anaconda: Troubleshooting
  7. FirstBoot
  8. Kickstart
  9. Network Booting with PXE
  10. A Typical Install

LAB TASKS

  1. Linux Installation
  2. Automating Installation with Kickstart

C. INSTALLING SLES12

  1. YaST Install Program Interface
  2. Network Installation
  3. SLP for SUSE Linux Installation
  4. Installation Choices
  5. Kernel Crash Dump Configuration
  6. Network Booting with PXE
  7. Creating AutoYaST2 Files
  8. Using AutoYaST2 files
  9. linuxrc Automation
  10. Installation Diagnostics
  11. After The First Reboot
  12. A Typical Install

LAB TASKS

  1. SUSE Linux Enterprise Server Installation
  2. Automating Installation with AutoYaST

D. MANAGE VIRTUAL MACHINES

  1. Virtualization: What and Why?
  2. Introducing libvirt
  3. libvirt: Basic Concepts
  4. libvirt: Storage Architecture
  5. libvirt: Network Architecture
  6. libvirt: Graphical Tools
  7. libvirt: Command Line Tools
  8. virsh: Basics
  9. virsh: Common Tasks
  10. virt-install
  11. Virtual Machine Guest Tools & Drivers
  12. libguestfs and guestfish

LAB TASKS

  1. Installing a Virtual Machine

E. BACKUPS

  1. Backup Software
  2. Managing Optical Media
  3. Tape Libraries
  4. Backup Examples

LAB TASKS

  1. Using rsync and ssh for Backups
  2. Using tar for Backups
  3. Using cpio for Backups
  4. Creating ISO Images for Backups
  5. Using dump and restore for Backups

 

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