Proxmox VE – Troubleshooting, HA & Service Recovery (PROX3)

Virtualization, Proxmox

This course focuses on troubleshooting outages and recovering Proxmox VE environments. Through practical scenarios, you will work with disk, node and network failures, configuration errors, and the loss of virtual machines or containers. You will learn to assess the impact of a failure, choose an appropriate recovery procedure, and verify that the recovered environment is functioning correctly.

The course also covers configuration protection, virtual machine backups, snapshot management, and HA cluster behavior when one or more nodes fail. Attention is also given to Ceph recovery, loss of access, and issues following system updates.

THIS TRAINING COURSE WILL HELP YOU:

  • Design environments with component failures in mind
  • Back up configuration and virtual machines and prepare for their recovery
  • Distinguish between the uses of backups, snapshots and high availability
  • Troubleshoot node, disk, network and Ceph storage failures
  • Configure monitoring and alerts for early problem detection

WHO SHOULD ATTEND?

  • Administrators with experience in basic Proxmox VE administration
  • Managers responsible for high availability, backup and disaster recovery
  • IT architects and DevOps specialists preparing resilient cluster environments

COURSE LOCATION AND AVAILABLE DATES

Contact us

Need this course in English?

Public courses are usually delivered in Czech, but this course is also available in English. We can arrange private training for your team online, at your premises or in our classrooms, and tailor the content to your needs.

For groups of around 4 or more participants, private training can already be comparable in price to booking individual places on a public course. Send us your requirements and we’ll recommend the best format and provide an exact quote.

Request training in English

Course content:

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  • Design and Architecture of Failure-Resilient Systems
    1. Identifying critical components and individual points of failure
    2. Redundancy of nodes, network connections and storage
    3. Assessing the impact of an outage on service availability
  • Configuration Backup and Recovery
    1. Selecting configuration required to recover the environment
    2. Storing and verifying the usability of configuration backups
    3. Restoring settings and verifying services
  • Virtual Machine Backup and Recovery
    1. Preparing backup jobs and checking their results
    2. Restoring a virtual machine from backup
    3. Verifying configuration, data and functionality after recovery
  • Using Snapshots
    1. Creating snapshots before configuration changes
    2. Reverting to a previous state of the virtual environment
    3. Snapshot limitations and their relationship to backups
  • Network Configuration
    1. Checking network availability and traffic separation
    2. Diagnosing incorrect settings and broken connections
    3. Restoring communication between nodes and virtual environments
  • Storage Configuration
    1. Checking storage availability and status
    2. Assessing the impact of a failure on running virtual machines
    3. Verifying storage connectivity after resolving the issue
  • Working with HA Clusters
    1. Behavior when a single node fails
    2. Multiple-node failure and its impact on quorum
    3. Checking resource recovery and returning nodes to operation
  • Recovery from Individual Component Failures
    1. Recovery after disk failure
    2. Recovery after host failure
    3. Recovery from network failure or incorrect network configuration
    4. Recovery of a lost virtual machine or LXC container
    5. Restoring access after losing a password or second authentication factor
    6. Ceph recovery after disk or node failure
    7. Troubleshooting issues after a system update
  • Notification Settings
    1. Selecting events and configuring alert recipients
    2. Verifying delivery and using alerts when troubleshooting outages
  • System Monitoring
    1. Monitoring node, cluster and storage status
    2. Evaluating events and system logs
    3. Checking the environment after recovery
Recommended previous course:
Proxmox VE – Advanced Management and High Availability (PROX2)
Schedule:
2 days (9:00-17:00)
Price per person:
760.00 € ( 919.60 € incl. 21% VAT)

Training and learning environment

Proxmox VE cluster administration dashboard showing CPU, memory metrics, and eight online nodes.
What hardware infrastructure is used during our hands-on Proxmox courses?Training takes place on our dedicated internal PVE cluster with eight nodes, featuring 3 TB RAM and two FC storage arrays. Course participants work directly within a live, fully configured production environment to experience real-world administration tasks.
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.
Table with sweet pastries, fruit syrups, a water dispenser, and glasses set up for training participants.
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.