Administration Section
Hello everyone. Friends, we are sharing with you the translation of an article prepared specifically for students of the 'Data Engineer' course. Let's go! Apache Beam and DataFlow for real-time pipelines Today's post is based on a task I was recently working on at my job. I was really excited to implement it and describe the work done in a blog post format, as it gave me the opportunity to dive into data engineering, […]
Privilege escalation is the use of the current account's rights by an attacker to gain additional access, typically at a higher level within the system. Although privilege escalation can result from the exploitation of zero-day vulnerabilities, or from sophisticated hackers conducting targeted attacks, or from cleverly disguised malware, it most often occurs due to […]
Hello everyone. I work as a lead system administrator at OK and am responsible for the stable operation of the portal. I want to share how we established the process of automatically replacing disks, and then how we excluded the administrator from this process and replaced them with a bot. This article is somewhat of a transliteration of my presentation at HighLoad+ 2018 on building the disk replacement process. First, a little […]
The ETL component of the data warehouse often takes a back seat to the warehouse itself and receives less attention than the main database or front-end component, BI, and report generation. However, from the perspective of filling the warehouse with data, ETL plays a key role and requires no less attention from administrators than the other components. My name is Alexander, and I currently administrate ETL at Rostelecom, and […]
One morning, I came across an article about a verifiable random number generator on the Waves platform blockchain. The overall picture was clear, but the method of specific implementation was not. There were codes, signatures, what goes where and why? After several consultations with the oracle's author, I managed to combine the logic of the draw (implemented in PHP) with the algorithm for generating a random number. When the tournament/round started […]
The gaming market is estimated at $140 billion. With each passing year, the market expands, new companies find their niche, and established players evolve. One of the most actively developing trends in gaming is cloud gaming, where a powerful PC or next-gen console is not required to launch a new title. According to analytics agency IHS Markit, last year gaming services […]
Welcome to the series of quick guides on Kubernetes. This is a regular column featuring the most interesting questions we receive online and during our training sessions. Answering is Kubernetes expert. Today's expert is Daniele Polencic. Daniele works as an instructor and software developer at Learnk8s. If you would like to have your question answered in the next post, please reach out to […]
On May 27-28, the industry exhibition and a series of professional conferences "Russian Internet Technologies 2019" took place in Moscow. Selectel traditionally supported the event and acted as its partner. Today, we will briefly talk about what stood out for guests and participants. The company Ontiko, the organizer of the festival, made every effort to create a comfortable and convenient space for both guests and […]
Part One. Introduction Part Two. Configuring Firewall and NAT rules Part Three. Configuring DHCP Part Four. Configuring routing Part Five. Configuring load balancers Today, we will look at the VPN configuration capabilities offered by NSX Edge. In general, we can divide VPN technologies into two key types: Site-to-site VPN. IPSec is most commonly used to create a secure tunnel […]
You may have the best open-source project, but without good documentation, there's a chance it will never take off. Good documentation in the office will save you from answering the same questions repeatedly. It also ensures that people can understand the project if key employees leave or roles change. […]
Remember I wrote on Habr and on my Telegram channel about the details of payments in favor of the traffic police and the bailiffs that became publicly available for users of the websites oplatagibdd.rf, paygibdd.ru, gos-oplata.ru, shtrafov.net, and oplata-fssp.ru? Just don’t laugh; this is no joke — the same server containing the same system data has once again been exposed to the entire world. […]
We present an overview of the recent updates in 3CX. There's a lot of exciting information — stay tuned! 3CX v16 Update 1 We recently released another update, 3CX v16 Update 1. This update includes new chat features and an updated communication widget for your site, 3CX Live Chat & Talk. Additionally, Update 1 introduced a new Call Flow Service that adds […]