RHEL 7 – new features for administrators Training Course
The "RHEL (Red Hat Enterprise Linux): Upgrading to version 7" training focuses on the process of upgrading from version 6.x to version 7 of RHEL, explaining the capabilities and limitations of this process. The course covers Systemd topics, including managing services with systemctl, basic concepts such as Slices, Services, Targets, and the benefits of journald for log logging. Participants will gain knowledge of system management using new tools such as Tuned, System Storage Manager (SSM), and data storage mechanisms such as LVM/dm_cache and BTRFS with Snapper. Additionally, the training focuses on the topics Linux Container, Docker, Kubernetes, as well as integration with Windows systems via Samba 4, SSSD, and REALMD. During the course, participants will acquire skills in the installation, configuration and management of the RHEL system in the context of new features such as high availability clusters, managed disk spaces using Ceph, as well as Software Defined Storage Clusters mechanisms. The training also covers cloud integration using Ceph, providing knowledge on Ceph cluster configuration, Ceph-RBD, CephFS, Crushmaps, Storage Tiering, and Erasure Coding.
This course is available as onsite live training in Venezuela or online live training.Course Outline
Update to Version 7
- Overview of the update process from RHEL 6.x to version 7
- Capabilities and limitations
Systemd
- SysV vs. Upstart vs. system
- Introduction to Systemd
- Managing services using systemctl
- Basic concepts: Files, Services, Targets
- Targets vs. runlevels, service dependencies
- Systemd and cgroups: resource constraints, CPU allocation, and other resources
- New logging capabilities for journald
- Troubleshooting
System Management with New Tools
- Tuned
- Chronyd vs NTP
- System Storage Manager (SSM)
- Data storage mechanisms: LVM / dm_cache
BTRFS and Snapper
- Introduction to the BTRFS file system
- Redundancy and resizing while the system is running
- Subvolumes and snapshots
- Managing snapshots with Snapper
Linux Container, Docker and Kubernetes
- Introduction to Linux-Container (LXC)
- Advantages and applications
- Technology comparison: Docker, Rocket, and LXD
- Installation, configuration, and administration of the Docker mechanism
- Creating images and managing containers
- Managing Kubernetes containers
Integration with Windows
- Introduction to Samba 4 (S4) version 4.5
- New features of the S4 package
- Samba 4 as an Active Directory domain controller
- Command-line tools, RSAT
- Samba 4 - integration with W2Kx systems - domain, replication, group policies
SSSD and REALMD
- Installation and configuration
- Central authorization of user objects through SSSD
- Integration with Active Directory
- SSSD - overview of capabilities
- SSSD and realmd
New Features in High Availability Management
- New clustering mechanisms - PCS (Pacemaker Configuration System)
- Corosync 2.x / Pacemaker as a replacement for CMAN (Pacemaker)
- CRM and CIB and other cluster resources: LSB, systemd, and OCF
- Primitives, Groups, Group Cloning, and Multi-Resources
- Rules and constraints as elements of cluster configuration
- Managing clusters using PCS and CRM-Shell
- Comparison of PCS and CRM-Shell
- Emergency failover
Managing Disk Space with Ceph
- Introduction to mechanisms: Software Defined Storage Clusters
- Cloud storage managed by Ceph
- Structure and operation
- CEPH 10.x 'Jewel' - integration with systemd
- Configuring a Ceph cluster
- Overview of Ceph-RBD and CephFS
- Overview of mechanisms: Crushmaps, Storage Tiering / Erasure Coding
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Testimonials (1)
The exercises were quite a few and all very useful.
Christian Ortiz - BANXICO
Course - BASH Programming
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