Linux – Red Hat Cluster Suite (LNX6)

Unix-like systems, Linux - administration

This course introduces the Red Hat Cluster Suite with focus on its high availability features for building resilient services. You will learn core cluster concepts, deployment scenarios, and essentials for running reliable production clusters.

Hands-on labs cover installation, configuring iSCSI and shared storage, fencing methods, resource management and failover. You will practice diagnostics, quorum and network bonding to design and operate production-ready HA clusters.

THIS TRAINING COURSE WILL HELP YOU:

  • Deploy and configure Red Hat Cluster Suite
  • Configure shared storage and iSCSI clients
  • Implement fencing and resource failover
  • Manage quorum, diagnose and resolve cluster issues

WHO SHOULD ATTEND?

  • Linux system administrators and operators
  • IT engineers responsible for production services
  • Storage and network administrators managing HA systems
  • DevOps and platform engineers deploying cluster services

COURSE LOCATION AND AVAILABLE DATES



Private training

This course is not scheduled as a public course.
It is delivered exclusively as customised training. The content, duration, date, and delivery format are tailored to the customer's requirements and can also be provided in English.

Request customised training

Course content:

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  • Introduction to clusters
    1. Principles, cluster types, and common use cases
    2. Overview of HA (high availability) clusters
    3. Introduction to the Red Hat Cluster Suite implementation
  • Requirements for base installation and system configuration; hardware and infrastructure recommendations for reliable production operation (power, network, shared disk arrays)
  • Install and bring the cluster framework online on the first node
    1. Verify basic functionality
    2. Configure the iSCSI client and connect shared iSCSI NAS storage
    3. Expand the setup to a two-node cluster
    4. Verify cluster framework operation
    5. Assemble and finalize the cluster
  • Configure resources to evict non-responsive or faulty nodes from the cluster
  • Fencing
    1. Remote power control of a node
    2. Isolate a node from the shared disk array
  • Example installation and configuration of services in a cluster (WWW, SQL, NFS), including active/hot‑standby and active/active modes, and static load distribution (service affinity)
  • Diagnostics and handling common operational and failure states
    1. Starting services
    2. Stopping and migrating services between nodes
    3. Starting and stopping the entire cluster
    4. Handling cluster failure or split‑brain and reacting to service failures
    5. Network connectivity issues
    6. Shared disk array problems
  • Demonstration and discussion of communication options between nodes and quorum configuration
    1. Backup network links for node communication
    2. Use of a quorum disk for extended node health checks and to prevent total cluster failure on network loss
  • Shared disk space management
    1. Use of LVM in a cluster environment (CLVM) and cluster file systems GFS/GFS2
    2. Use of LVM in a cluster environment (CLVM) and cluster file systems GFS/GFS2
    3. Using LVM for HA shared storage (LVM mirror across two iSCSI arrays)
  • Use of multiple I/O paths to the disk array to increase availability and throughput (multipath I/O)
  • Considerations for clusters with more than two nodes
  • Discussion of replacing shared external storage with real‑time replication of local disks (DRBD)
  • Ethernet network configuration. Teaming/bonding — combining multiple NICs to increase reliability and/or throughput
Prerequisites:
Basic Linux system operation and administration skills.
Recommended previous course:
Linux – Basic Administration (LNX1)
Schedule:
3 days (9:00-17:00)

Training and learning environment

IT classroom with desks, computer monitors, and a projection screen at the front.
What does the environment for in-person IT courses look like?We hold training courses in our own classrooms equipped with modern computer equipment for each participant and a large projection screen. Each workstation is fitted with a powerful computer for seamless practical exercises, and the environment supports a calm, friendly atmosphere during training.
IT classroom with desks, computer monitors, and a projection screen at the front.
Do I need to bring my own laptop to the classroom IT course?Our training rooms are fully equipped, so you do not need to bring your own laptop. A modern computer with all necessary hardware and software is ready for you at your workstation.
Sample ICT Pro certificate of successful completion of an IT training course.
Will you receive an official certificate after completing an IT course?Yes, upon successful completion of the training course, you will receive an official ICT Pro certificate confirming your participation and acquired technical skills. You can use it to verify your qualifications or add it to your professional profile.
Exterior view of the COMGUARD office building on Sochorova Street in Brno.
Where can you find our training center in Brno?The premises of the ICT Pro training center are located on the 1st floor of the COMGUARD building at Sochorova 38 in Brno. Positioned on the border of Žabovřesky and Komín, the location is easily accessible by both car and public transport.
Exterior view of the Opatov Park office building in Prague, Chodov.
Where can you find our training center in Prague?The premises of the ICT Pro training center are located on the 1st floor of the Opatov Park building at Líbalova 1, Prague 11 – Chodov. The location provides a comfortable environment for your education with convenient access.
Fully equipped kitchenette with a coffee machine, microwave, sink, and shelves with cups and glasses.
What facilities and refreshments are available to you during training breaks?Our training centers feature a fully equipped kitchenette for a comfortable break during your courses. The facilities include a coffee machine, microwave, kettle, and a wide selection of drinks and snacks.
Coffee station featuring an automatic coffee machine, yellow and white cups, glasses, and syrups.
What beverage refreshments are available during your course?A beverage station with a coffee machine, teas, syrups, and water is at your disposal throughout the entire training session. You can enjoy a coffee or another drink of your choice anytime during breaks.
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What light refreshments are provided for you during the courses?During course breaks, participants can enjoy light sweet snacks, pastries, and fruit syrups to mix their own drinks. Fresh water dispenser and plates are also available for your convenience.
Wicker baskets filled with packaged savory snacks, sweet biscuits, and snack bars.
Should I bring my own snacks to ICT Pro training?There is no need to. A wide selection of savory snacks, sweet biscuits, and snack bars is available for you during breaks. Boost your energy for all-day focus right inside the training center premises.
Outdoor wooden terrace with green surroundings by the glass building of the training center.
Can you spend training breaks in the fresh air?Yes, an outdoor terrace is available at our training center. During breaks between learning sessions, you can relax in the fresh air in a pleasant green environment.
Spacious outdoor wooden terrace with seating and views of the surrounding area.
Where can you relax during course breaks?Our training center features a spacious outdoor terrace with seating options. During breaks between learning sessions, you can step outside to relax and recharge in the fresh air.