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Red Hat Enterprise Linux v7 Differences
Duration
3 Days
Course
OSUN-280
Available Formats
Classroom Training, Online Training
Course Description
Overview
This 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.
Objectives
Audience
- It is intended for system administrators and developers who are comfortable with RHEL6 and wish to update their skills on the new topics.
Prerequisites
- This course requires an advanced knowledge of Red Hat Enterprise Linux System Administration v6 or earlier. These skills are taught in the OSUN-225 'Enterprise Linux Systems Administration' and OSUN-120 'Linux Fundamentals' courses.
Topics
SYSTEMD OVERVIEW
- System Boot Method Overview
- systemd System and Service Manager
- Modifying systemd services
- Systemd Service Sandboxing Features
- systemd Targets
- Using systemd
- Linux Runlevels Aliases
- Legacy Support for SysV init
- Lab Tasks
- Managing Services With Systemd's systemctl
- Creating a systemd unit file
- Introduction to Troubleshooting Labs
- Booting Linux on PCs
- GRUB 2
- GRUB 2 Configuration
- GRUB 2 Security
- Boot Parameters
- Initial RAM Filesystem
- init
- 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
- Booting directly to a bash shell
- GRUB Command Line
- Basic GRUB Security
- Troubleshooting Practice: Boot Process
- udev
- SCSI Devices
- USB Architecture
- Kernel Modules
- Configuring the Kernel via /proc/
- Console
- Virtual Terminals
- Keyboard & locale configuration
- Random Numbers and /dev/random
- Virtual Machine Guest Tools & Drivers
- Virtual Machine Serial Console
- Lab Tasks
- Adjusting Kernel Options
- Troubleshooting Practice: Kernel Modules
- Partitioning Disks with fdisk & gdisk
- Resizing a GPT Partition with gdisk
- Partitioning Disks with parted
- Non-Interactive Disk Partitioning with sfdisk
- Filesystem Creation
- Persistent Block Devices
- Mounting Filesystems
- Resizing Filesystems
- Filesystem Maintenance
- Managing an XFS Filesystem
- Swap
- Configuring Disk Quotas
- Setting Quotas
- Viewing and Monitoring Quotas
- Lab Tasks
- Creating and Managing Filesystems
- Setting User Quotas
- 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 LVM Volumes
- Troubleshooting Practice: LVM
- Linux Network Interfaces
- Ethernet Hardware Tools
- Network Configuration with ip Command
- Configuring Routing Tables
- Starting and Stopping Interfaces
- Network Manager
- Hardware and System Clock
- Lab Tasks
- Network Discovery
- Basic Client Networking
- Multiple IP Addresses
- Interface Aggregation
- Interface Bonding
- Network Teaming
- Lab Tasks
- Multiple IP Addresses Per Network Interface
- Troubleshooting Practice: Networking
- System Logging
- systemd Journal
- systemd Journal's journalctl
- Secure Logging with Journal's Log Sealing
- gnome-system-log
- Rsyslog
- /etc/rsyslog.conf
- Lab Tasks
- Using the systemd Journal
- Setting up a Full Debug Logfile
- Remote Syslog Configuration
- Remote Rsyslog TLS Configuration
- Determining Service to Process Mapping
- Real-time Monitoring of Resources — Cgroups
- RHEL7 Rescue Environment
- File Sharing via NFS
- NFSv4+
- SAN Multipathing
- Multipath Configuration
- Multipathing Best Practices
- Approaches to Storing User Accounts
- Controlling Login Sessions
- PAM Module Types
- PAM Order of Processing
- Fine Grained Authorizations with Polkit
- FirewallD
- iSCSI Target Implementations
- iSCSI Target Node Preparation & targetcli
- iSCSI Target Administration
- iSCSI Target Defining Storage Objects
- iSCSI Target LUN Administration
- iSCSI Target Network Portal Configuration
- iSCSI Target Security
- iSCSI Target Examples
- Lab Tasks
- Recovering Damaged MBR
- Cgroup for Processes
- NFS Server Configuration
- iSCSI Initiator Configuration
- Multipathing with iSCSI
- Application Management Landscape
- Application Isolation
- Resource Measurement and Control
- Container Security
- Container Security
- Open Container Initiative
- Docker Ecosystem
- Docker Ecosystem (cont.)
- Lab Tasks
- Container Concepts runC
- Container Concepts Systemd
- Installing Docker
- Docker Architecture
- Starting the Docker Daemon
- Docker Daemon Configuration
- Docker Control Socket
- Creating a New Container
- Listing Containers
- Viewing Container Operational Details
- Running Commands in an Existing Container
- Interacting with a Running Container
- Stopping, Starting, and Removing Containers
- Copying files in/out of Containers
- Inspecting and Updating Containers
- Lab Tasks
- Installing Docker
- Managing Containers
- Configure a docker container to start at boot.
- Pre-Installation Considerations
- Hardware Compatibility
- Multi-OS Booting
- Partition Considerations
- Filesystem Planning
- Selecting a Filesystem
- Anaconda: An Overview
- Anaconda: Booting the System
- Anaconda: Common Boot Options
- Anaconda: Loading Anaconda and Packages
- Anaconda: Storage Options
- Anaconda: Troubleshooting
- FirstBoot
- Kickstart
- Network Booting with PXE
- A Typical Install
- Lab Tasks
- Linux Installation
- Automating Installation with Kickstart
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