Category Administration
The celebration is Friday, admin, and on their day. With competitions, games and quirks. How it was 8 years ago. Preparations for Admin Day 2011 began several months earlier. I received this letter: Dear ADMINS! “System Administrator Day” is just around the corner! Preparations for the third IT festival ADMINFEST have begun. Traditionally, the IT festival will be held in Rostov-on-Don […]
The translation of the article was prepared for students of the Linux Security course. Interested in developing in this direction? Watch the recording of the broadcast of Ivan Piskunov’s master class “Security in Linux compared to Windows and MacOS” In this article I will talk about the steps to set up a DNS server on RHEL 7 or CentOS 7. For the demonstration, I used Red Hat Enterprise Linux 7.4. Our goal […]
Simple passwords are not secure, and complex ones are impossible to remember. That's why they so often end up on a sticky note under the keyboard or on the monitor. To ensure that passwords remain in the minds of “forgetful” users and the reliability of protection is not lost, there is two-factor authentication (2FA). Due to the combination of owning a device and knowing its PIN, the PIN itself can be simpler and easier to remember. […]
Often companies are faced with the need to install new, more powerful equipment in existing premises. This task can sometimes be difficult to solve, but there are a number of standard approaches that can help you accomplish it. Today we will talk about them using the example of the Mediatek data center. MediaTek, a world-renowned microelectronics manufacturer, has decided to build a new data center at its headquarters. As usual, the project […]
Hello colleagues. Today we offer for your consideration a translation of an article by Tugberk Ugurlu, who undertook to outline in a relatively small volume the principles of designing modern software systems. Here is what the author says about himself in summary: Since it is absolutely impossible to cover in a habro article such a colossal topic as architectural patterns + design patterns as of 2019, we recommend […]
Not long ago, Mail.Ru Cloud Solutions (MCS) and the Dobro Mail.Ru service launched the “Cloud for Charitable Foundations” project, thanks to which non-profit organizations can receive the resources of the MCS cloud platform for free. The Arithmetic of Good charity foundation took part in the project and successfully deployed part of its infrastructure based on MCS. After undergoing validation, an NPO can receive virtual capacity from MCS, […]
When the trees were a little taller, the grass was greener, the sun was brighter, and I was studying at the institute, I had a student social card. I liked it for its functionality and thoughtfulness, but, like all good things, its validity period expired and I had to forget about this blessing of Moscow civilization for an indefinite period of time. It was replaced by Troika, which was partially able […]
Having once deployed a video surveillance system and then scaled it, users often become “hostages” of the installed equipment. Switching from one hardware and services provider to another is expensive. There are many manufacturers on the market who create their own services, adding the next pet to a large zoo of solutions. It’s difficult to “make friends” of different equipment in one project, but we figured out how to do it. Today we will tell […]
TL:DR; A newbie tried Haiku for the first time and thought it was awesome. Especially compared to the desktop environments available on Linux I've already shared my ideas (and frustrations) about #LinuxUsability (part 1, part 2, part 3, part 4, part 5, part 6). In this review, I will describe my first impressions of Haiku, the operating system […]
Medium Summer Meetup is a gathering of enthusiasts interested in information security, Internet privacy, and the development of the Medium network. We meet periodically to discuss the most important issues regarding projects developed by the Community, as well as exchange experiences with fellow enthusiasts. We invite everyone who is interested in information security and privacy on the Internet to participate. Medium Summer Meetup […]
Note Translation: Dailymotion is one of the world's largest video hosting services and therefore a notable user of Kubernetes. In this material, system architect David Donchez shares the results of creating the company's production platform based on K8s, which began with a cloud installation in GKE and ended as a hybrid solution, which allowed for better response times and savings on infrastructure costs. […]
The purpose of this post is to show a debugging technique in debian/ubuntu related to "finding the source" in the system configuration file. Test example: after much mockery of the tar.gz copy of the installed OS and after restoring it and installing updates, we receive the message: update-initramfs: Generating /boot/initrd.img-4.15.0-54-generic W: initramfs-tools configuration sets RESUME=/dev/mapper/U1563304817I0-swap W: but no matching swap device is available. I: The initramfs […]
