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Reporting Engine in Satellite 6.5: What It Is and Why It Matters

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Red Hat Satellite is a system management solution that simplifies the deployment, scaling, and management of Red Hat infrastructure across physical, virtual, and cloud environments. Satellite enables users to configure and update systems to ensure their efficient and secure operation in compliance with various standards. By automating most tasks related to maintaining system functionality, Satellite helps organizations improve efficiency, reduce […]

From High Ceph Latency to Kernel Patch using eBPF/BCC.

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Linux offers a wide range of tools for debugging the kernel and applications. Most of them negatively impact application performance and cannot be used in production. A couple of years ago, another tool was developed — eBPF. It allows for tracing the kernel and user applications with low overhead and without the need for recompiling programs or loading third-party […]

Redis Stream — reliability and scalability of your messaging systems

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Redis Stream is a new abstract data type introduced in Redis with the release of version 5.0. Conceptually, Redis Stream is a List where you can add records. Each record has a unique identifier. By default, the identifier is generated automatically and includes a timestamp. This allows you to query ranges of records by time or receive new data from […]

Redis Stream is new.

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Does anyone remember Erwise? Viola? Cello? Let's reminisce. When Tim Berners-Lee arrived at CERN, the famous European particle physics laboratory, in 1980, he was hired to upgrade the control systems of several particle accelerators. But the inventor of the modern web page quickly saw a problem: thousands of people constantly came and went at the research institute, many of whom worked there temporarily. "For programmers on […]

Cisco Meeting Server 2.5.2. Cluster in Scalable and Resilient mode with video conferencing recording feature

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In this issue, I will show and explain some intricacies of setting up a CMS server in a fault-tolerant cluster mode. TheoryThere are generally three types of CMS server deployment: Single Combined, which means a single server running all necessary services. In most cases, this type of deployment is only applicable for access by internal clients and in small environments, where scalability limitations […]

An Overview of the Delta Amplon RT UPS

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The Delta Amplon family has a new addition — the manufacturer has introduced a new series of devices with a capacity of 5-20 kVA. The Delta Amplon RT uninterruptible power supplies are characterized by high efficiency and compact size. Previously, this family only offered relatively low-power models, but the new RT series includes single-phase and three-phase devices with capacities up to 20 kVA. The manufacturer positions them for use in […]

A great interview with Cliff Click — the father of JIT compilation in Java.

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Cliff Click is the CTO of Cratus (IoT sensors for process improvement) and the founder and co-founder of several startups (including Rocket Realtime School, Neurensic, and H2O.ai) with multiple successful exits. Cliff wrote his first compiler at the age of 15 (Pascal for TRS Z-80)! He is best known for his work on C2 in Java (the Sea of Nodes IR). This compiler demonstrated […]

Overview of GUI Interfaces for Managing Docker Containers

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Working with Docker in the console is a routine for many. However, there are occasions when a GUI/web interface can be beneficial even for them. This article presents an overview of the most notable solutions available today, whose authors have attempted to offer more convenient (or suitable for specific cases) interfaces for exploring Docker or even managing large installations of it. […]

Cisco Training 200-125 CCNA v3.0. Day 11. Basics of VLAN.

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Before we dive into the basics of VLAN, I would ask all of you to pause this video, click on the icon in the bottom left corner that says Networking consultant, visit our Facebook page, and like it. Then return to the video and click on the King icon in the bottom right corner to subscribe to our official […]

Hyperscale Data Centers: Who Builds Them and How Much Do They Cost

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By the end of 2018, the number of hyperscale data centers reached 430. Analysts predict that this year their number will increase to 500. Work is already underway to construct an additional 132 hyperscale data centers. Together, they will process 68% of the data generated by humanity. These data centers' capacities are needed by IT companies and cloud providers. Photo — Atomic Taco — CC BY-SA Who builds […]

Design of the Virtualized Data Center

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Introduction An information system, from the user's perspective, is well defined in GOST RV 51987 as "an automated system, the result of which is the presentation of output information for subsequent use." If we consider the internal structure, any IS essentially consists of a system of interconnected algorithms implemented in code. Broadly speaking, according to the Turing-Church thesis, an algorithm (and hence the IS) performs a transformation of a set of input […]

How to Choose a Storage Area Network Without Shooting Yourself in the Foot

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Introduction It's time to buy a storage system. Which one to choose and whom to listen to? Vendor A talks about vendor B, while integrator C offers opposing advice and recommends vendor D. In such situations, even an experienced storage architect can feel overwhelmed, especially with all the new vendors and the trendy SDS and hyper-convergence. So, how do you […]

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