Administration Section
In early July 2020, MyOffice released its second major update. In the new version 2020.01.R2, the most noticeable functional changes occurred in the tools for working with email and calendar. Server components of 'MyOffice Mail' were optimized, leading to a threefold increase in the speed of sending emails to 500 or more recipients. Starting from this version, the mail system […]
In this article, I will explain how to set up OpenDaylight to work with networking equipment and also show how to manage this equipment using Postman and simple RESTCONF requests. We will not be working with physical hardware; instead, we will set up small virtual labs with a single router using Vrnetlab on top of Ubuntu 20.04 LTS. I will provide detailed configuration instructions […]
Some time ago, we faced the question of choosing an ETL tool for working with Big Data. The previously used solution, Informatica BDM, did not meet our needs due to its limited functionality. Its use was reduced to a framework for running spark-submit commands. There were not many alternatives on the market capable of handling the volume of data we deal with every day. […]
If you are new to DevOps, check out this guide on creating your first five-stage pipeline. DevOps has become the standard solution for resolving slow, disjointed, or non-functional software development processes. The problem is that if you are new to DevOps and unsure where to start, you may lack an understanding of these methods. In […]
Recently, our company introduced a new product – Dell EMC PowerStore. This is a versatile platform designed for performance, offering multi-dimensional scaling, continuous data reduction (compression and deduplication), and support for next-generation storage media. PowerStore employs a microservices architecture, cutting-edge storage technologies, and integrated machine learning. This is what we want to discuss in detail – information […]
What is the importance of DevOps, what it means for IT professionals, and a description of methods, frameworks, and tools. Much has taken place since the term DevOps became established in the IT world. Considering that much of the ecosystem is open source, it's important to revisit why this started and what it means for a career in IT. What is DevOps Although there is no single […]
Good day, Habr! Task In my organization, we use a mail server based on the Kerio Connect platform, with mail servers installed in different cities serving their users. Initially, there was no distributed structure, as the domains differ at the third level indicating the city of the site. Everything was working fine and everyone was satisfied. One fine day, management set the task to create a shared calendar for […]
Hello everyone! My name is Kirill, and I am the CTO at Adapty. Most of our architecture is on AWS, and today I will share how we reduced our server costs by three times using spot instances in the production environment, as well as how to configure their auto-scaling. We will start with an overview of how this works, and […]
Since 2019, a law on mandatory labeling has been in effect in Russia. The law does not apply to all groups of goods, and the timelines for mandatory labeling vary for different product groups. The first items to fall under mandatory labeling will be tobacco, footwear, and pharmaceuticals, with additional products, such as perfumes, textiles, and milk, to be added later. This legislative innovation has prompted the development of new IT solutions that will allow […]
The translation of the article has been prepared in anticipation of the start of the course “Linux Administrator. Virtualization and Clustering.” DRBD (Distributed Replicated Block Device) is a distributed, flexible, and universally replicable data storage solution for Linux. It mirrors the contents of block devices such as hard drives, partitions, logical volumes, etc., between servers. It creates copies of data on […]
The pandemic has forced each of us, without exception, to acknowledge that the internet is predominantly an information medium and also a vital life support system. After all, many people today are literally fed, clothed, and educated by the internet. The internet is infiltrating our homes, settling in teapots, vacuum cleaners, and refrigerators. IoT, or the Internet of Things, refers to any equipment, such as household appliances, in […]
Structuring Unstructured Data with GROK If you are using the Elastic (ELK) stack and are interested in mapping user logs from Logstash to Elasticsearch, then this post is for you. The ELK stack is an acronym for three open-source projects: Elasticsearch, Logstash, and Kibana. Together, they form a log management platform. Elasticsearch is a search and analytics system. […]