Crystal Business Center

ул. "Осогово" 40, Sofia, Bulgaria, 1303

Crystal Business Center is located in the central part of Sofia, on the corner of "Osogovo" street. and "Todor Aleksandrov...

Subcategories (13)

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Debian
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Arch Linux
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The Linux Foundation Authorized Courses

Explore Our Courses

Rocky Linux for Administrators

 14 Hours
This instructor-led, live training in Sofia (online or onsite) is aimed at beginner to intermediate-level system administrators who wish to gain the knowledge, practical skills, and confidence to proficiently manage and utilize Rocky Linux in various real-world scenarios and business applications. By the end of this training, participants will be able to:
  • Navigate, install, configure, and manage a Rocky Linux system effectively.
  • Administer system tasks and implement security measures.
  • Understand virtualization and containerization.
  • Implement backup and recovery plans and optimize system performance.
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Linux Foundation - Certified Systems Administrator (LFCS)

 35 Hours
This instructor-led, live training in Sofia (online or onsite) is aimed at system administrators and IT professionals who wish to become proficient Linux system administrators. By the end of this training, participants will be able to:
  • Effectively manage Linux systems and servers.
  • Perform key system administration tasks.
  • Configure and troubleshoot networking in Linux.
  • Implement security measures to protect Linux systems.
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Linux Foundation - Fundamentals of Open-Source IT and Cloud Computing (LFS200)

 28 Hours
This instructor-led, live training in Sofia (online or onsite) is aimed at individuals who want to gain a solid understanding of open-source IT and cloud computing fundamentals. By the end of this course, participants will be able to:
  • Understand the principles of open-source software and its benefits.
  • Navigate and utilize the Linux command-line interface.
  • Comprehend cloud computing concepts and terminology.
  • Explore various cloud deployment models and services.
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Introduction to Linux

 14 Hours
The course answers the questions:
  • How to perform basic operations on the system?
  • Where to find information and how to get help?
  • How does the power?
  • What are the types of files in the system?
  • How simply and quickly solve problems?
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Alpine Linux

 7 Hours
Alpine Linux is a security-oriented, lightweight (80 MB) Linux distribution based on musl libc and BusyBox. Alpine Linux is produced by the makers of Docker and is one of several in the recent proliferation of distros tailored for virtualization, containerization and the cloud. Alpine Linux replaces Ubuntu as the official base image for Docker containers. This training introduces Alpine Linux's architecture and walks participants step-by-step through the setup of Alpine Linux in a live lab environment. By the end of this training, participants will have the knowledge and practice to deploy Alpine Linux as the foundation for running containers in development, test and production environments. Audience
  • DevOps engineers
  • System administrators
  • Software engineers
Format of the course
  • Part lecture, part discussion, heavy hands-on practice
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Introduction to Cumulus Linux

 14 Hours
This instructor-led, live training in Sofia (online or onsite) is aimed at network engineers and network administrators who wish to use Cumulus Linux to implement networking solutions for data centers. By the end of this training, participants will be able to:
  • Build and operate networks for businesses of all sizes.
  • Automate CI/CD workflows, such as NetDevOps processes.
  • Customize and scale networks seamlessly.
  • Implement industry-standard security features with Cumulus Linux.
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DNS and BIND: Setting Up, Managing and Securing Your DNS Server

 14 Hours
In this instructor-led, live training in Sofia, participants will learn the critical features of DNS while carrying out exercises in the setup and configuration of a BIND DNS server on Linux. The course starts with a refresher on key networking principles, then digs into hands-on practice with setup and configuration. Steadily, the discussion and practices move towards more complex topics such as security, availability, debugging and troubleshooting.
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Top 4 Linux/Unix Servers - DNS,Web,Mail and Database

28 Hours
  • Created Linux/Unix Administrators and developers who are interested with getting involved in LInux/Unix Servers
  • Even beginners, who have the basic skill and knowledge on Linux, can catch up with this course just if you follow the instructor's lab and explanation in detail.
  • This course is intended to practice enough Managing Linux Servers and to show it is very easy to understand Linux/Unix servers.
  • This course will be delivered to audience with 40% lectures, 50% labs and 10% Q&A. This five-day course strongly emphasizes lab-based activities.
  • You'll learn how to deploy and manage Top 4 Linux Servers that provide highly useful network services to a mission-critical enterprise environment.
  • It can be deliver on any distribution (Fedora, CentOS are commonly used)
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Running Kubernetes on Fedora CoreOS

 14 Hours
This instructor-led, live training in Sofia (online or onsite) is aimed at DevOps engineers and developers who wish to use Fedora CoreOS to reduce the maintenance and upgrade costs of running  containerized applications on Kubernetes. By the end of this training, participants will be able to:
  • Install and configure Fedora CoreOS.
  • Set up Kubernetes cluster on Fedora CoreOS.
  • Run and manage Kubernetes deployments on Fedora CoreOS.
  • Automatically update Fedora OS with the latest OS improvements, bug fixes, and security updates.
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Go for Systems Programming

 35 Hours
Go (Golang) is an open source programming language developed at Google. One of Go's popular use cases is Linux and Unix systems programming. In this instructor-led, live training, participants will learn the fundamentals of systems programming with Go as they step through hands-on exercises exploring the various features of Go. By the end of this training, participants will be able to:
  • Understand the fundamentals of Go systems programming
  • Set up the Go development environment
  • Write programs in Go
  • Use both the basic and advanced features of Go for Unix and Linux systems programming
  • Understand and use Goroutines
  • Write fast and lightweight code with Go
  • Write low-level networking code with Go
Audience
  • Programmers
  • Developers
Format of the course
  • Part lecture, part discussion, exercises and heavy hands-on practice
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Intermediate Unix

 21 Hours
This course aims to provide its participants with all the necessary tools to acquire the intermediate skills about the Linux operating system, so that they can edit, manage and structure the program in the way that is most convenient for their organization with a thorough intermediate knowledge of the operation of the system.
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LEDE: Set Up a Linux Wireless Router

 7 Hours
The LEDE Project (Linux Embedded Development Environment) is a Linux operating system based on OpenWrt. It is a complete replacement for the vendor-supplied firmware of a wide range of wireless routers and non-network devices. In this instructor-led, live training, participants will learn how to set up a LEDE based wireless router. Audience
  • Network administrators and technicians
Format of the course
  • Part lecture, part discussion, exercises and heavy hands-on practice
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Linux Administration Fundamentals

 21 Hours
Learn core Linux Systems Administration skills in a workshop environment. (Ubuntu or CentOS) Who is this course for: Engineers who want to transition into Linux engineering and administration roles.
Beginners who want to understand how a Linux operating system works and how to manage it.
People looking to prepare for professional certifications such as the LPI level 1 or RHCSA. Description: This course is designed to teach you about the advantages of Linux-based operating systems, their role in enterprise, and how to understand and administer them. Aimed at relative beginners, we will teach you all the skills necessary to manage a small Linux estate. Using a combination of demonstrations and practical exercises, we will guide you through the relevant commands, tools and processes you will need to know to become a successful administrator of a professional Linux environment. The skills to properly run and maintain Linux environments are in very high demand.
If you have little or no experience working with Linux and wish to become a competent administrator quickly, this course will give you all the tools you need to enter the exciting and challenging world of Linux administration. At the end of this course you will:
  • Understand what GNU/Linux is, and its role in modern IT
  • Be able to install a linux distribution from scratch
  • Be able to configure users, groups, storage, and networking of a Linux-based computer
  • Be able to confidently navigate the command line interface (CLI) on any Linux server
  • Understand services, processes, and system resources
  • Install, remove, and configure software.
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Linux Advanced

 14 Hours
This instructor-led, live training (online or onsite) is aimed at intermediate to advanced-level users. Format of the Course
  • Interactive lecture and discussion.
  • Lots of exercises and practice.
  • Hands-on implementation in a live-lab environment.
Course Customization Options
  • To request a customized training for this course, please contact us to arrange.
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Linux Command Line Basics

 7 Hours
Linux is an open source operating system that is popular among developers because of its stability, flexibility, and customizability. In this instructor-led, live training, participants will learn how to use the Linux Command Line and implement basic commands. By the end of this training, participants will be able to:
  • Have a good understanding of the Linux File System and the Linux Command Line
  • Learn how to navigate the Linux File System using Linux commands
  • Learn how to create and manipulate files and directories using Linux commands
  • Create their own Linux commands
Audience
  • Anyone interested in getting started with Linux
  • Windows or Mac users who are interested in switching to Linux
  • Existing Linux users who want to be more effective in using the Linux Command Line
Format of the course
  • Part lecture, part discussion, exercises and heavy hands-on practice
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Highly Available Services with DRBD and Pacemaker

 7 Hours
The primary objective of this practical course is to introduce the Linux high-availability stack (Pacemaker, DRBD) to system administrators. During the training, each participant will build a two-machine cluster that offers a simple highly-available service (such as PostgreSQL or NFS) on a virtual IP address. Also, uses of DRBD not related to high availability are considered.
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Network Security in Linux

 14 Hours
During the course, participants will learn:
  • What is denial of service attacks, Flooding, Sniffing, MIM?
  • How to break from the network to the server?
  • How to watch packets on the network (also running on switches)?
  • Do you watch any combination of the world?
  • How to monitor the network?
  • How to configure a firewall?
  • How to use encrypted connections?
  • How to create tunnels?
  • How to log packets?
  • How to scan ports?
  • How to reduce the number of unnecessary services on the server?
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Linux for Network Engineers

 14 Hours
This instructor-led, live training in Sofia (online or onsite) is aimed at network engineers who wish to use Linux for network engineering. By the end of this training, participants will be able to:
  • Set up Linux services for networking.
  • Replace switches with Linux switches.
  • Use Linux commands to manage processes.
  • Configure an SDN to automate network maintenance.
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Linux System Administration

 21 Hours
This Linux System Administration training course is designed for IT professionals who wish to learn core Linux System Administration skills. Using a combination of demonstrations and practical exercises, this course will guide participants through the relevant commands, tools and processes needed to become a successful administrator of a professional Linux environment. Participants will learn how to
  • Setup, maintain and troubleshoot a Linux system
  • Manage users on a Linux system
  • Set up and install server software (web server, ftp server, vnc server, etc.)
  • Deploy and monitor a production system
  • Implement basic system security
Audience
  • IT professionals on the path to becoming a Linux system administrator or network administrators
  • Beginners who want to learn how to manage a Linux system.
Format of the Course
  • Interactive lecture and discussion
  • Lots of exercises and practice
  • Hands-on implementation in a live-lab environment
Course Customization Options
  • Linux is available in different flavours (Debian/Ubuntu, CentOS/Fedora/Red Hat, Suse, etc.).
  • This training can be customized for any flavor. Please contact us to arrange.
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Linux Network Programming

 14 Hours
This course is addressed to junior software developers. After the course completion, the trainees will be able to understand the architecture of well-known web servers such as Apache or Nginx, and implement their own network programs. The course is 67% lectures, 33% hands-on exercises.
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Virtualization with QEMU, KVM and Libvirt

 14 Hours
This practical course contains topics addressed to system administrators, developers, embedded developers and ordinary desktop users (including managers) who would like to have an introduction to virtualization in general. After this course, administrators will be able to create private clouds for use in production, and developers will be able to test their code on multiple operating systems without needing a second PC or a non-x86 board. We understand that the set of topics presented in this course covered a wide range of subjects that might not be applicable for all customers. When booking this course, please specify what you wish to achieve using QEMU or KVM, and we will customize it by reallocating time from less relevant topics to the ones that would be important for you.
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RHEL 7 – nowe cechy dla administratorów

 28 Hours
The 'RHEL (Red Hat Enterprise Linux): Upgrading to 7' training focuses on the process of upgrading from 6.x to RHEL 7, covering Systemd, management tools, and new features. Participants will acquire skills in the area of Linux Container, Docker, Kubernetes, integration with Windows systems, as well as high availability clusters and Software Defined Storage Clusters using Ceph.
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RHEL 8 for Linux Administrators

 35 Hours
RHEL 8 Linux administration course
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UNIX/Linux Shell Scripting

 14 Hours
This 2 day course gives an introduction to the writing of UNIX Shell scripts using the Korn and Bash shells and to the more advanced features of UNIX including the batch editor sed and the text file processing language awk. Although based on the Solaris version of UNIX running on a desktop PC, the principles learnt may be applied to all other versions of UNIX including Linux, AIX, HP-UX and SCO. The course takes the format of a workshop, with a mix of lecture, working examples and practical exercises. Although the content may be customised, at least 1 day is normally needed to cover the core elements. Full course notes are provided along with sample script files and free software tools for use in accessing a UNIX server.
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Linux LPI LPIC-1 Exam 101 Preparation

 14 Hours
This course has been created for someone preparing for the LPI certification 101 Exam. It is conducted as a series of lectures intertwined with simple exercises.
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Linux LPI LPIC-1 Exam 102 Preparation

 14 Hours
This course has been created for someone preparing for the LPI certification 102 Exam. It is conducted as a series of lectures intertwined with simple exercises.
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Linux LPI LPIC-2 Exam 201 Preparation

 14 Hours
This course has been created for someone preparing for LPI certification. It is conducted as a series of lectures intertwined with simple exercises.
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Linux LPI LPIC-2 Exam 202 Preparation

 14 Hours
This course has been created for someone preparing for LPI certification. It is conducted as a series of lectures intertwined with simple exercises.
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Introduction to Snap Packages

 7 Hours
This instructor-led, live training in Sofia (online or onsite) gives an intro into the features and highlights of Snap and draws comparisons with other similar Linux packaging systems and container software. By the end of this training, participants will be able to:
  • Set up a Snap package.
  • Build, and release their own Snap packages.
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Ubuntu Server Overview

 21 Hours
This course has been created for managers, system architects, existing Unix or Windows administrators or anyone who wants to know what Ubuntu Server operating system has to offer. This course in most cases answers the question WHAT Ubuntu Server can do for you, rather than HOW to do things. If you are interested in the HOW question then please have a look at our Administration of Linux System training course. This course always covers the newest release of Ubuntu.
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Testimonials (15)

file permissions

Angel - Vodacom
Course - Linux Command Line Basics

I liked that we also had to do exercises with each new thing learned

Daria
Course - Intermediate Unix

The trainer's flexibility during the training (adapting the training to the group, taking into account questions and explaining a specific issue) and outstanding industry biscuits.

Piotr Sumionka - INTEGRALE IT Sp. z o.o
Course - Linux Kernel for System Administrators

Machine Translated

The trainer has a vast knowledge of the courses, I like how he explains the details about each lab exercises, and also whenever there are issues or errors that arise in lab exercises, he always managed to resolve and troubleshoot it.

Cayle Ronie T. Rama - Questronix Corporation
Course - Red Hat Enterprise Linux (RHEL) Administration

- adapting to all course participants - cool, illustrative examples

Katarzyna - Rossmann SDP Sp. z.o.o
Course - Introduction to Linux

Machine Translated

The right person in the right place, the presenter was brilliant, he presented the issues in an accessible way, explained them in detail, looked for solutions to problems, the pace of work was adequate to the issues discussed, plus perfect diction and a radio voice that made the presenter very easy to listen to. It was clear that this topic was his passion, he talked about it with great passion and commitment

Magdalena - Aplitt Sp. z o.o.
Course - Linux System Administration

Machine Translated

Very well structured and delivered information, a lot of practical exercises to help the knowledge transfer, the trainer responded to every question and helped everyone.

Catalin - DB Global Technology
Course - Linux Administration Fundamentals

Trainer's practical knowledge and references to it

Patryk - Bibby Financial Services
Course - Ubuntu System Administration

Machine Translated

Practical examples and wider context given.

James - Mitsubishi Electric R&D Centre Europe BV (MERCE-UK)
Course - IoT Programming with Python

Tyler is very knowledgable and shared his valuable experience in Lustre administration with us.

Zhenping Liu
Course - Lustre File System for Admins

Everything was interesting

Paweł Jaworski - Euro-net sp. z o.o.

Machine Translated

The trainer was very interactive and steadily paced.

Carolyn Yaacoby - Yeshiva University
Course - Raspberry Pi for Beginners

Wojciech and NobleProg focused the itinerary to feet my needs.

christopher Connelly - NEETRAC / GA TECH
Course - UNIX/Linux Shell Scripting

The extra informations not in the official docs

Sayf Eddine HAMMEMI - SCALITY SA
Course - Go for Systems Programming

I mostly enjoyed the learn about Regexp on Linux.

DIdier Mauricio Sanabria Pinzon
Course - Linux LPI LPIC-1 Exam 101 Preparation

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