Developers Club geek daily blog

What else influences infrastructure: How to provide quality of installation of equipment

2 years, 7 months ago


We in "Later" are engaged in development of billing for telecom operators (providers of a wire and wireless internet, TV and telephony, trunk and satellite providers) 8 years. And during this time we understood that for increase of level of the rendered services, to the operator it is necessary far not only billing which is basic component of business (without it nothing will be simple to work), and complex automation.

And one of the important elements of this "complex" which are directly influencing quality of services and impression of clients is work of assemblers of the equipment. Such remote workers and quality of their work need to be controlled, and it is possible to make it by means of special software. In our today's material — a story about how we created such product.

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Two-factor authentication of clients of Cisco AnyConnect. FreeRadius and Google Authenticator

2 years, 7 months ago


In the previous article I considered setup of two-factor authentication of users for connection to corporate resources through Cisco AnyConnect based on the Active Directory and Microsoft Azure Multi-Factor Authentication Server (MFAS). Today I suggest you to consider option with use of FreeRadius and Google Authenticator.

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Rutube 2009-2015: history of our iron

2 years, 7 months ago
There passed 7 years since Rutube became part Gazprom Media of Holding and the new stage of development of the project began. In this article we will tell about what we received the project at the end of 2008 and as it changed within 7 years on the hardware. Under a cat you are waited by the fascinating story and many pictures (carefully, a traffic!), therefore stick on the Feature (our office cat) and forward!


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Alloy Discovery: eye of Omniscience of the system administrator

2 years, 7 months ago
The more in a network, the life of the system administrator which besides continually the advanced users installing own equipment, the software and even changing a configuration of "iron" with evil or kind intention try to complicate is uneasier than computers. When computers become too much or they are located too far, there is a need for carrying out periodic audit of a network. There is a set of the utilities capable to carry out or facilitate audit, however poorly what of them solve a problem in a complex and cover all needs of the engineer. The Alloy Software command created the software solution aimed at thorough audit. As, and, above all for what it works, we will tell in a post.

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CloudLITE 2.0, or correction of mistakes of cloud provider

2 years, 7 months ago
In the middle of October we restarted a cloud service of CloudLITE, having changed a platform of provisioning and billing for BILLManager. Today we will tell about what at us changed and why.

Instead of the preface


CloudLITE is the IaaS-service based on VMware allowing to unroll automatically a virtual data-center, to create virtual computers with any OS and configurations and to manage all this economy through the VMware vCloud Director panel.
Service was it at the time of the start in April. Since then CloudLITE already managed to type some cones (without the victims among clients, fortunately), to acquire a stable pool of clients who very much helped us to pay attention to the separate moments and to make corrections to further development of service.

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As Netflix works: Complete overview of a stack of technologies of a cloud service

2 years, 7 months ago
Note of the translator: In our blog we write about creation of a cloud service of imgix much, described a detective story of search of problems with Algolia project SSD disks, and today we present to yours adapted translation of article of the creator of the blog Scale Scale Chris Ueland in which the detailed overview of a stack of the Netflix technologies is presented.



Overview of interesting features of scaling Netflix


The Netflix company was founded in 1997 by Mark Rendolf and Read Hastings in Skots-Velli, the State of California, and at the initial stage in it there were 30 employees working on 925 movies and series on a subscription. Today Netflix is the leading world network of Internet television servicing more than 69 million clients from 50 countries who enjoy every month viewing of TV series and movies of the general lasting more than ten billion hours. The company is very open and spreads a lot of information in the Network. We collected all most interesting and decided to share it.

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What expects DPC the industry in the future

2 years, 7 months ago


How the DPC the industry in 10-15 years will look?. Regularly many IT specialists ask the matter and do not miss an opportunity to regularly voice the thoughts concerning the future of server farms.

Poll on the subject "DPC of 2025 — Studying of Opportunities"

"DPCs of 2025 — studying of opportunities" reported to Emerson Network Power in the report results of poll on a subject which concerns the near future of data-centers. More than 820 specialists in the field of DPC from around the world took part in this poll. During poll of respondents asked to share the thoughts of how data-centers will look in 10 years. There is a wish to note that the polled specialists did not predict expansion of scenarios of "the supernatural nature of an origin" (as in anti-Utopia from the cult film trilogy "Matrix" where data-centers received the electric power thanks to the huge fields consisting of "people batteries").

And so …

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New data-center of Intel: high performance and extreme density of placement of the equipment

2 years, 7 months ago

New 60U are resistant in a new data-center of Intel

The Intel company sets up records of overall performance of the data-center, having created racks of new type on own project. New server racks, having height in 2,7 meters, are a key element in data-centers of the company, allowing to increase density of placement of the equipment and to increase efficiency of use of resources, including the electric power.

Internal requirements of the company are serviced by about 59 data-centers worldwide. The total quantity of servers in these data-centers makes 130 thousand. Now the company transformed the former enterprise for production of semiconductors to a highly effective data-center. There is it in Santa Clara, California.

The former factory became field laboratory of the company where the innovations concerning data-centers are tested. This data-center can soon become one of the most powerful in the Silicon Valley as Intel is going to bring object power to 30 MW within 5 years.

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Different counters for automation of office: repatters, curtains, lighting and so on

2 years, 7 months ago


Hi! Now I will show a heap of toys which help to make life at office better. For example, not to fight because of repatters and at first sight to understand its loading. I will tell what rake happens how to do correctly in advance and what to do if in advance did not leave, and it is necessary to improve very cheap office space already tomorrow.

Let's begin with booking systems a repatter and informing on what there now occurs. Traditionally it is here such screens plates as it is given above on a photo. Ours at office with a touchscreen, a calendar and still a heap of features, normal — just the monitor and web service to it looking in the intranet of the company.

There are 3–5 normal industrial solutions of the series "put and do not touch for years" are vendors of AMX, Crestron, Extron and others. Actually, it is top brands, and they have all solution stack: video routing (it is necessary for those situations when on a panel the video call to the manager is clicked), switching, display.

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Solar energy for date-tsetrov

2 years, 7 months ago
General curiosity was initiated by news from the Apple company about construction of a new data-center worth about 2 billion dollars which will receive energy only from renewable sources. It means to provide with energy the area more than 100 thousand sq.m. The project is one of the most expensive. The considerable part of power supply will be made by solar energy of the local company Salt River Project which has production volume about 70 MW.



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