GL280 - Red Hat Enterprise Linux v7 Differences

This is a differences course that focuses on the new technologies and features that made their appearance in Red Hat Enterprise Linux v7. It is intended for system administrators and developers who are comfortable with RHEL6 and wish to update their skills on the new topics.

The notable new features covered in this course include the new system and service manager Systemd, the GRUB2 boot manager, new Dracut the reworked and standardized /etc configuration files, UDEV changes, storage enhancements such as Automated Storage Tiering, Thin Provisioning, Device Mapper dm-raid target, and the XFS filesystem. Other new networking features are covered such as the systemd-udev NIC naming scheme, nmcli, and the new Network Teaming system. Additional new management and monitoring tools are covered such as the new polkit javascript authorization system, the new cgroups architecture, FirewallD and the systemd journal, and new advanced input and output modules for rsyslog.

Finally, an overview of the Linux container ecosystem and an excellent introduction to Docker is included in this course.

Version: C01

Prerequisites:

This course requires an advanced knowledge of Red Hat Enterprise Linux System Administration v6 or earlier. These skills are taught in the GL250 "Enterprise Linux Systems Administration" and GL120 "Linux Fundamentals" courses.

Supported Distributions:
Red Hat Enterprise Linux 7
Course Outline:
  1. Systemd Overview
    1. System Boot Method Overview
    2. systemd System and Service Manager
    3. Modifying systemd services
    4. Systemd Service Sandboxing Features
    5. systemd Targets
    6. Using systemd
    7. Linux Runlevels Aliases
    8. Legacy Support for SysV init
    Lab Tasks
    1. Managing Services With Systemd's systemctl
    2. Creating a systemd unit file
    3. Introduction to Troubleshooting Labs
  2. 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. 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
  3. Linux Kernel & Devices
    1. udev
    2. SCSI Devices
    3. USB Architecture
    4. Kernel Modules
    5. Configuring the Kernel via /proc/
    6. Console
    7. Virtual Terminals
    8. Keyboard & locale configuration
    9. Random Numbers and /dev/random
    10. Virtual Machine Guest Tools & Drivers
    11. Virtual Machine Serial Console
    Lab Tasks
    1. Adjusting Kernel Options
    2. Troubleshooting Practice: Kernel Modules
  4. Local Storage Administration
    1. Partitioning Disks with fdisk & gdisk
    2. Resizing a GPT Partition with gdisk
    3. Partitioning Disks with parted
    4. Non-Interactive Disk Partitioning with sfdisk
    5. Filesystem Creation
    6. Persistent Block Devices
    7. Mounting Filesystems
    8. Resizing Filesystems
    9. Filesystem Maintenance
    10. Managing an XFS Filesystem
    11. Swap
    12. Configuring Disk Quotas
    13. Setting Quotas
    14. Viewing and Monitoring Quotas
    Lab Tasks
    1. Creating and Managing Filesystems
    2. Setting User Quotas
  5. LVM
    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
    Lab Tasks
    1. Creating and Managing LVM Volumes
    2. Troubleshooting Practice: LVM
  6. Basic Networking
    1. Linux Network Interfaces
    2. Ethernet Hardware Tools
    3. Network Configuration with ip Command
    4. Configuring Routing Tables
    5. Starting and Stopping Interfaces
    6. NetworkManager
    7. Hardware and System Clock
    Lab Tasks
    1. Network Discovery
    2. Basic Client Networking
  7. Advanced Networking
    1. Multiple IP Addresses
    2. Interface Aggregation
    3. Interface Bonding
    4. Network Teaming
    Lab Tasks
    1. Multiple IP Addresses Per Network Interface
    2. Troubleshooting Practice: Networking
  8. Log File Administration
    1. System Logging
    2. systemd Journal
    3. systemd Journal's journalctl
    4. Secure Logging with Journal's Log Sealing
    5. gnome-system-log
    6. Rsyslog
    7. /etc/rsyslog.conf
    Lab Tasks
    1. Using the systemd Journal
    2. Setting up a Full Debug Logfile
    3. Remote Syslog Configuration
    4. Remote Rsyslog TLS Configuration
  9. Other RHEL7 Changes
    1. Determining Service to Process Mapping
    2. Real-time Monitoring of Resources — Cgroups
    3. RHEL7 Rescue Environment
    4. File Sharing via NFS
    5. NFSv4+
    6. SAN Multipathing
    7. Multipath Configuration
    8. Multipathing Best Practices
    9. Approaches to Storing User Accounts
    10. Controlling Login Sessions
    11. PAM Module Types
    12. PAM Order of Processing
    13. Fine Grained Authorizations with Polkit
    14. FirewallD
    15. iSCSI Target Implementations
    16. iSCSI Target Node Preparation & targetcli
    17. iSCSI Target Administration
    18. iSCSI Target Defining Storage Objects
    19. iSCSI Target LUN Administration
    20. iSCSI Target Network Portal Configuration
    21. iSCSI Target Security
    22. iSCSI Target Examples
    Lab Tasks
    1. Recovering Damaged MBR
    2. Cgroup for Processes
    3. NFS Server Configuration
    4. iSCSI Initiator Configuration
    5. Multipathing with iSCSI
  10. Container Technology Overview
    1. Application Management Landscape
    2. Application Isolation
    3. Resource Measurement and Control
    4. Container Security
    5. Container Security
    6. Open Container Initiative
    7. Docker Ecosystem
    8. Docker Ecosystem (cont.)
    Lab Tasks
    1. Container Concepts runC
    2. Container Concepts Systemd
  11. Docker Fundamentals
    1. Installing Docker
    2. Docker Architecture
    3. Starting the Docker Daemon
    4. Docker Daemon Configuration
    5. Docker Control Socket
    6. Creating a New Container
    7. Listing Containers
    8. Viewing Container Operational Details
    9. Running Commands in an Existing Container
    10. Interacting with a Running Container
    11. Stopping, Starting, and Removing Containers
    12. Copying files in/out of Containers
    13. Inspecting and Updating Containers
    Lab Tasks
    1. Installing Docker
    2. Managing Containers
    3. Configure a docker container to start at boot.
  1. Pre-Installation Considerations
    1. Pre-Installation Considerations
    2. Hardware Compatibility
    3. Multi-OS Booting
    4. Partition Considerations
    5. Filesystem Planning
    6. Selecting a Filesystem
  2. 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
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