Red Hat 7 System Administration - Part 3
Course Code: RHSA3V7
Duration: 5 days
Red Hat 7 System Administration - Part 3 Course Overview
This highly practical instructor led Red Hat 7 System Administration - Part 3 training course is designed to give the delegate practical experience in the areas of networking, security, basics of shell scripting and AWK as well as MariaDB incorporating MySQL commands.
With a strong emphasis on practical hands-on training, this course will teach the essential network, security and shell scripting tasks required on a Red Hat Linux system.
The delegate will learn modern system administration techniques and commands to administer a Red Hat Linux system to an advanced level. The command line is demonstrated and used extensively throughout the course.
Exercises and examples are used throughout the course to give practical hands-on experience with the techniques covered.
Course Objectives
This course aims to provide the delegate with the knowledge to be able to perform more advanced administration of networking facilities, securing the system and the use of scripting on a Red Hat Linux system.
Who will the Course Benefit?
The Red Hat 7 System Administration - Part 3 course is designed for System Administrators and Programmers and other technical IT staff who need to acquire knowledge of the key networking, security and scripting tasks required to administer a Linux system.
This course would also benefit experienced system administrators familiar with Unix and other Linux distributions who wish to gain knowledge to administer Red Hat Linux systems.
Skills Gained
The delegate will learn and acquire skills as follows:
- Creating systemd units
- IPv6 addressing
- Configuring aggregated network links (teaming) and bridging
- Network monitoring with tcpdump and Wireshark
- Wireshark filters and expert information
- SELinux configuration and the primary SELinux commands
- Create SELinux modules
- Configure a secure firewall configuration
- Configure a DNS server
- Configure iSCSI Target and Initiator
- Sudo configuration, Sudoedit and Sudoreplay
- Configure a Kerberos server and client
- Create and convert RAID arrays
- Configure a Postfix mail server
- Understand encryption techniques
- Configure SSH
- Configure HTTP/HTTPS servers
- Managing and exporting containers with Podman
- Containerizing a MariaDB Database
- Version control with Git
- Comparison of online Git repositories
- Managing Git content and branches
- Create interactive scripts
- Create conditional shell scripts and loops to automate tasks
Red Hat 7 System Administration - Part 3 Training Course
Course Introduction
- Administration and Course Materials
- Course Structure and Agenda
- Delegate and Trainer Introductions
Session 1: SYSTEMD UNITS
- systemd Wants and Requires
- Creating systemd service and timer units
- Creating systemd mount units
- Useful systemd related utilities
- Exercise
Session 2: NETWORK MANAGEMENT AND IPV6
- Routing under Linux
- ip suite of programs
- Configuring network cards and Routing
- Configuring the system as a Gateway
- IPv6 Addressing
- Local Network Bridges
- Configure Ethernet Bonding (Link aggregation, teaming)
- Exercise
Session 3: NETWORK MONITORING
- Capturing packets with tcpdump
- Wireshark Introduction
- Filtering with Wireshark
- Filtering IPv6 traffic
- Wireshark Expert Information
- Exercise
Session 4: SELINUX
- DAC vs MAC
- SELinux Policy
- SELinux Contexts
- SELinux Key Commands
- Viewing SELinux Decisions
- SELinux Booleans
- permissive and unconfined Domains
- Exporting SELinux Configuration
- Exercise
Red Hat 7 System Administration - Part 3 Training Course
Session 5: SELINUX MODULES
- SELinux Entities
- Object Classes
- SELinux Modules
- Administering Modules
- Creating Modules with audit2allow
- Writing SELinux Modules
- Type Enforcement File
- Exercise
Session 6: RED HAT FIREWALL
- Firewalld Overview
- Firewalld vs IPTables
- Firewall Zones
- Configuring Firewall
- Creating a Firewall Service
- Configuring Firewall Zones
- Rich Rules
- Exercise
Session 7: DOMAIN NAME SERVER (DNS)
- The DNS/BIND system under Red Hat Linux
- Name Server Hierarchy
- Setting up DNS
- Master/Slave Zones
- Reverse lookup Zones
- Record types and their syntax
- Name Daemon Control Utility (rndc)
- Address Match Lists (acl)
- Configuring a Caching Only Name Server
- DNS in a chroot environment
- Testing a DNS server
- Exercise
Red Hat 7 System Administration - Part 3 Training Course
Session 8: CENTRALISED AND SECURE STORAGE
- iSCSI Overview
- Setting up iSCSI Target and Initiator
- Accessing centralised storage
- Accessing encrypted file systems
- Exercise
Session 9: SUDO
- Running commands with Sudo
- Sudo options and tags
- Sudo logging and replay
- Include statements
- Exercise
Session 10: KERBEROS
- Configuring a Kerberos 5 server
- Configuring a Kerberos client
- Configuring SSH to use Kerberos
- Exercise
Red Hat 7 System Administration - Part 3 Training Course
Session 11: RAID ARRAYS
- Creating RAID arrays
- Converting RAID 5 to RAID 6
- Hot swapping failed drives
- Removing a RAID device
- Exercise
Session 12: POSTFIX MAIL SERVER CONFIGURATION
- Mail commands
- Mail User, Mail Transport and Mail User Agents
- Postfix Configuration
- Configuring a null client using Postfix
- Dovecot - POP and IMAP services
- Exercise
Session 13: SSL, TSL AND WEB SERVICE CONFIGURATION
- Data Security and Encryption
- Public Key Encryption
- Configuring Virtual Hosts : Name And IP Based Access
- Displaying Apache Web Server Information and Status
- Dynamic Virtual hosts
- Configuring HTTPS
- Signed Certificates
- Apache SSL Configuration File
- HTTPS Virtual Hosts
- Exercise
Session 14: CONFIGURING A MARIADB DATABASE
- Install and run a MariaDB container
- Creating a MariaDB Database
- Creating Database Tables
- Perform simple SQL queries on the database
- Exporting the Container
- Exercise
Red Hat 7 System Administration - Part 3 Training Course
Session 15: VERSION CONTROL WITH GIT
- Online Git Repositories
- Cloning a Repository
- Pushing, Pulling and Cloning content
- Creating and Merging Git Branches
- Moving to Points-in-Time
- Git Tags
- Viewing Git Logs
- Exercise
Session 16: SHELL SCRIPTING
- What is a shell script?
- Creating and executing shell scripts
- User interaction
- Command line arguments
- Exercise
Session 17: CONDITIONAL SHELL SCRIPTING
- Decision constructs using the 'if' statement
- Case statement
- Looping constructs: for/while/until
- Automating administrative tasks
- Exercise
APPENDIX A: AWK FUNDAMENTALS
- AWK usage statements
- AWK scripts
- AWK variables
- Pattern matching with AWK
- AWK Operators
- Exercise
- Course technical content is subject to change without notice.
- Course content is structured as sessions, this does not strictly map to course timings. Concepts, content and practicals often span sessions.
Requirements
The delegate should be competent with common command line tools, vi/vim editor, using system and basic SELinux commands. They should also be capable of creating client access to NFS and CIFS, as well as basic networking, firewalls and scheduling automated tasks.
The requirements for this course can be met by either of the pre-requisite courses listed.
Pre-Requisite Courses
Further Learning
Course Reviews
The course was very digestible and the material included exceptionally comprehensive. The lecturer, Mark Holloway, was easy to follow as usual. His understanding of Red Hat Linux is exactly what you want from a trainer and we tested this as often as we could. I always come away thoroughly satisfied and impressed from these training sessions. 'Stayahead' is reliable for giving you the firm grounding in Linux you expect and so much more.
Nicholas - EO Software Engineer
The course covers the necessary topics following on from parts one & two, to have enough knowledge to complete the RHCSA. The pace allows time to investigate the topics fully and I also found that I was able to relate to real life usage in the field.
Peter - System Administrator - Communications
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