RHCSA Exam Prep

Chapter 1. Accessing the Command Line

• Components of a Distribution
• Red Hat Linux Products
• Logging In
• Running Programs
• Interacting with Command Line
• Desktop Environments
• GNOME
• got root?
• Switching User Contexts
• sudo

Lab Tasks

• Login and Discovery
• Switching Users With su

Chapter 2. Managing Files from the Command Line

• Managing Files Graphically
• Drag and drop with Nautilus
• Physical Unix File Structure
• Unix/Linux Filesystem Features
• Navigating the Filesystem
• Displaying Directory Contents
• Directory Manipulation
• File Manipulation
• Deleting and Creating Files
• Filesystem Links

Lab Tasks

• Navigating Directories and Listing Files
• Manipulating Files and Directories

Chapter 3. Configure and Secure OpenSSH Service

• Secure Shell
• OpenSSH Client & Server Configuration
• Accessing Remote Shells
• Transferring Files
• Alternative sftp Clients
• SSH Key Management

Lab Tasks

• Introduction to ssh and scp

Chapter 4. Managing Local Lunix Users and Groups

• User and Group Concepts
• User Administration
• Modifying Accounts
• Password Aging
• Group Administration
• RHEL DS Client Configuration
• System Security Services Daemon (SSSD)

Lab Tasks

• User and Group Administration
• Using LDAP for Centralized User Accounts

Chapter 5. Controlling Access to Files with Linux File System Permissions

• File Ownership
• File and Directory Permissions
• SUID and SGID on files
• SGID and Sticky Bit on Directories
• Changing File Permissions

Lab Tasks

• File and Directory Ownership and Permissions

Chapter 6. Control Access to Files with FACLS

• User Private Group Scheme
• Alternatives to UPG
• File Access Control Lists
• Manipulating FACLs
• Viewing FACLs
• Backing Up FACLs

Lab Tasks

• User Private Groups
• Using Filesystem ACLs

Chapter 7. Manage SELinux Security

• SELinux Security Framework
• SELinux Modes
• SELinux Commands
• Choosing an SELinux Policy
• SELinux Booleans
• Permissive Domains
• SELinux Policy Tools
• SELinux Troubleshooting
• SELinux Troubleshooting Continued

Lab Tasks

• Exploring SELinux Modes
• SELinux File Contexts

Chapter 8. Monitor and Manage Linux Processes

• What is a Process?
• Process States
• Viewing Processes
• Managing Processes
• Tuning Process Scheduling
• System Status “ CPU
• System Status “ I/O
• System Status “ Memory

Lab Tasks

• Process Management Basics

Chapter 9. Installing and Updating Software Packages

• Managing Software
• RPM Features
• RPM Architecture
• RPM Package Files
• Working With RPMs
• Querying and Verifying with RPM
• Managing Software Dependencies
• Using the Yum command
• YUM package groups
• Updating the Kernel RPM
• Dealing With RPM & Yum Digest Changes
• YUM Repositories
• YUM Repository Groups
• Yum Plugins & RHN Subscription Manager

Lab Tasks

• Managing Software with RPM
• Querying the RPM Database
• Using Yum

Chapter 10. Controlling Services and Daemons

• systemd System and Service Manager
• Modifying systemd services
• Systemd Service Sandboxing Features
• systemd Targets
• Using systemd
• Legacy Support for SysV init
• Booting Linux on PCs
• GRUB 2
• GRUB 2 Configuration
• GRUB 2 Security
• Boot Parameters
• Initial RAM Filesystem
• init
• Linux Runlevels Aliases
• Systemd local-fs.target and sysinit.target
• Systemd basic.target and multi-user.target
• Legacy local bootup script support
• System Configuration Files
• RHEL7 Configuration Utilities
• Shutdown and Reboot

Lab Tasks

• Boot Process
• GRUB Command Line
• Basic GRUB Security
• Managing Services With Systemd's systemctl
• Creating a systemd unit file
• Troubleshooting Practice: Boot Process

Chapter 11. Managing Red Hat Enterprise Linux Networking

• IPv4 Fundamentals
• TCP/UDP Fundamentals
• Linux Network Interfaces
• Ethernet Hardware Tools
• Network Configuration with ip Command
• Starting and Stopping Interfaces
• Configuring Routing Tables
• IP to MAC Address Mapping with ARP
• DNS Clients
• DHCP Clients
• Network Diagnostics
• NetworkManager

Lab Tasks

• Network Discovery
• Basic Client Networking
• Introduction to Troubleshooting Labs
• Troubleshooting Practice: Networking

Chapter 12. Analyzing and Storing Logs

• System Logging
• systemd Journal
• systemd Journal's journalctl
• Secure Logging with Journal's Log Sealing
• gnome-system-log
• Rsyslog
• /etc/rsyslog.conf
• Log Management
• Log Anomaly Detector

Lab Tasks

• Using the systemd Journal
• Setting up a Full Debug Logfile
• Remote Syslog Configuration
• Remote Rsyslog TLS Configuration

Chapter 13. Managing Storage and File Systems

• Partitioning Disks with fdisk & gdisk
• Resizing a GPT Partition with gdisk
• Partitioning Disks with parted
• Non-Interactive Disk Partitioning with sfdisk
• Mounting Filesystems
• Mounting Filesystems
• Persistent Block Devices
• Managing an XFS Filesystem
• Filesystem Table (/etc/fstab)
• Filesystem Creation
• Filesystem Maintenance
• Swap
• Logical Volume Management
• Implementing LVM
• Creating Logical Volumes
• Activating LVM VGs
• Exporting and Importing a VG
• Examining LVM Components
• Changing LVM Components
• Advanced LVM Overview
• Advanced LVM: Components & Object Tags
• Advanced LVM: Automated Storage Tiering
• Advanced LVM: Thin Provisioning
• Advanced LVM: Striping & Mirroring
• Advanced LVM: RAID Volumes

Lab Tasks

• Creating and Managing Filesystems
• Hot Adding Swap
• Creating and Managing LVM Volumes

Chapter 14. Scheduling System Tasks

• Automating Tasks
• at/batch
• cron
• The crontab Command
• crontab Format
• /etc/cron.*/ Directories
• Anacron

Lab Tasks

• Creating and Managing User Cron Jobs
• Adding System cron Jobs

Chapter 15. Mounting Network File Systems

• File Sharing via NFS
• NFSv4+
• NFS Clients
• NFS
• NFS Server Configuration
• Accessing Windows/Samba Shares from Linux
• AutoFS
• AutoFS Configuration

Lab Tasks

• Using autofs
• NFS Server Configuration

Chapter 16. Limiting Network Communication with FirewallD

• Netfilter: Stateful Packet Filter Firewall
• Netfilter Concepts
• Using the iptables Command
• Netfilter Rule Syntax
• Targets
• Common match_specs
• Extended Packet Matching Modules
• Connection Tracking
• FirewallD

Lab Tasks

• Securing Services with Netfilter
• FirewallD

Chapter 17. Virtualization and Kickstart

• Introducing libvirt
• libvirt: Basic Concepts
• libvirt: Storage Architecture
• libvirt: Network Architecture
• libvirt: Graphical Tools
• libvirt: Command Line Tools
• virsh: Basics
• virsh: Common Tasks
• virt-install
• Virtual Machine Guest Tools & Drivers
• libguestfs and guestfish
• Kickstart
• Anaconda: An Overview
• Anaconda: Booting the System
• Anaconda: Common Boot Options
• Anaconda: Loading Anaconda and Packages
• Anaconda: Storage Options
• Anaconda: Troubleshooting

Lab Tasks

• Installing a Virtual Machine

Appendix A. Understand and Use Essential Tools

• Use of Appendix
• Red Hat Online Documentation
• Getting Help Within the Graphical Desktop
• Gathering System Info
• Help from Commands and Documentation
• Getting Help with man & info
• Communication Channels
• File Redirection
• Piping Commands Together
• The gedit Text Editor
• Archives with tar
• Archives with cpio
• The gzip Compression Utility
• The bzip2 Compression Utility
• The XZ Compression Utility
• The PKZIP Archiving/Compression format
• Searching Inside Files
• The Streaming Editor
• Regular Expression Overview
• Regular Expressions
• RE Character Classes
• Regex Quantifiers
• RE Parenthesis
• Text Editing
• Learning Vim
• Basic vi
• Intermediate vi

Lab Tasks

• Help with Commands
• Archiving and Compression
• Pattern Matching with Regular Expressions
• Extended Regular Expressions
• Using Regular Expressions With sed
• Text Editing with Vim

Appendix B. Create, View, and Edit Text Files

• Producing File Statistics
• Replacing Text Characters
• Text Sorting
• Duplicate Removal Utility
• Extracting Columns of Text
• Combining Files and Merging Text
• Comparing File Changes

Appendix C. Comprehensive Review Lab Tasks

• Understand And Use Essential Tools
• Operate Running Systems
• Configure Local Storage and Filesystems
• Users, Groups, and File Permissions
• Maintenance and Recovery