Pull to refresh
227.49
Rating

System administration *

For user to be satisfied

Show first
Rating limit
Level of difficulty

Modern Micro-Service Architecture: Key Challenges for System Analysts

Reading time 9 min
Views 1.1K
Иннотех corporate blog System administration *Server Administration *Microservices *
Translation

We're continuing to explore micro service architecture. In today's blog Alexander Solyar, Lead system architect at Innotech, describes the main challenges analysts are facing while working with micro services. He also shares a number of effective solutions and recommendations.

Read more
Total votes 3: ↑3 and ↓0 +3
Comments 0

Modern Microservice Architecture: Design Principles

Reading time 7 min
Views 2.4K
Иннотех corporate blog System administration *Server Administration *Microservices *
Translation

First mentions of micro service architecture application go back to the previous decade. Today this approach became the industry standard. Alexander Solyar, Lead software architect at Innotech, dives into details, shares professional insights and practical rules for working with micro services .

Read more
Total votes 3: ↑3 and ↓0 +3
Comments 1

An Antidote to Absent-Mindedness, or How I Gained Access to an OpenShift Node without an SSH Key

Reading time 6 min
Views 4.7K
Иннотех corporate blog System administration **nix *DevOps *Openshift *
Translation

Typically when a Node falls out of the OpenShift cluster, this is resolved by simply restarting the offending element. What should you do, however, if you’ve forgotten the SSH key or left it in the office? You can attempt to restore access by using your wit and knowledge of Linux commands. Renat Garaev, lead developer at Innotech, described how he found the solution for this riddle and what was the outcome.

Read more
Rating 0
Comments 0

IaC Development Life Cycle

Reading time 7 min
Views 1.3K
Deutsche Telekom IT Solutions corporate blog System administration *IT Infrastructure *DevOps *Systems engineering *

IaC Development Life Cycle


idlc
This is the translation of my speech at T-Meetup: DevOps Life Cycle.


I believe that you have heard about SDLC (Systems development life cycle). Is it possible that the same things are applicable for the IaC?

Read more →
Total votes 1: ↑1 and ↓0 +1
Comments 0

Load test of WebRTC recording on AWS

Reading time 7 min
Views 1.5K
Flashphoner corporate blog System administration *Working with video *IT Infrastructure *DevOps *

Do you remember how just a few years ago it was a disaster to lose a camera at the end of a vacation? All memorable pictures and videos then disappeared along with the lost device. Probably, this fact prompted the great minds to invent cloud storage, so that the safety of records no longer depends on the presence of the devices on which these records are made.

Read more
Rating 0
Comments 0

WebRTC face to face video chat. Load test

Reading time 5 min
Views 1.2K
Flashphoner corporate blog System administration *Working with video *IT Infrastructure *DevOps *

We continue to review variants of load tests. In this article we will go over the testing methodology and conduct a load test that we will use to try and determine the number of users that could watch and stream at the same time, meaning the users will simultaneously publish and view the streams.

Read more
Rating 0
Comments 0

Load testing for WebRTC mixer

Reading time 11 min
Views 834
Flashphoner corporate blog System administration *Working with video *IT Infrastructure *DevOps *

This article is a continuation of our series of write-ups about load tests for our server. We have already discussed how to compile metrics and how to use them to choose the equipment, and we also provided an overview of various load testing methods. Today we shall look at how the server handles stream mixing.

Read more
Total votes 1: ↑1 and ↓0 +1
Comments 0

New features of the hybrid monitoring AIOps system Monq

Reading time 10 min
Views 843
Gals Software corporate blog IT systems testing *System administration *IT Infrastructure *Software


In one of the previous articles, I’ve already written about the hybrid monitoring system from Monq. Almost two years have passed since then. During this time, Monq has significantly updated its functionality, a free version has appeared, and the licensing policy has been updated. If monitoring systems in your company start to get out of control, and their number rushes somewhere beyond the horizon, we suggest you take a look at Monq to take control of monitoring. Welcome under the cut.
Read more →
Total votes 9: ↑9 and ↓0 +9
Comments 0

Using a headless browser for WebRTC load tests

Reading time 6 min
Views 2.4K
Flashphoner corporate blog System administration *Working with video *IT Infrastructure *DevOps *

In the previous article we went over a load test whose data could be used to choose a load-appropriate server. In the course of the testing, we would publish a stream on one WCS, and we would pick up that stream several times using a second WCS. The acquired results could be used as a basis for decisions on server operability.

Some would (justly) have concerns regarding the possible biases in such a test — after all, one of our servers was used to test another one of our servers. Could it be that we were using a specially optimized code that skewed the results in our favor?

Read more
Total votes 1: ↑1 and ↓0 +1
Comments 0

Choosing a server for 1000 WebRTC streams

Reading time 9 min
Views 1.5K
Flashphoner corporate blog System administration *Working with video *IT Infrastructure *DevOps *

In any project, a great deal of importance is placed on the selection of server hardware and WebRTC streaming is no exception. One of the key principles of such a selection is balance – the hardware should be powerful enough to handle the streams with no drops in quality, but not too powerful so as to waste resources. So, how does one choose the right server?

Read more
Total votes 3: ↑3 and ↓0 +3
Comments 0

Application performance monitoring and health metrics without APM

Reading time 8 min
Views 1.2K
IT systems testing *System administration *IT Infrastructure *Web services testing *Service Desk *
Translation

I have already written about AIOps and machine learning methods in working with IT incidents, about hybrid umbrella monitoring and various approaches to service management. Now I would like to share a very specific algorithm, how one can quickly get information about functioning conditions of business applications using synthetic monitoring and how to build, on this basis, the health metric of business services at no special cost. The story is based on a real case of implementing the algorithm into the IT system of one of the airlines.

Currently there are many APM systems, such as Appdynamics, Dynatrace, and others, having a UX control module inside that uses synthetic checks. And if the task is to learn about failures quicker than customers, I will tell you why all these APM systems are not needed. Also, nowadays health metrics are a fashionable feature of APM and I will show how you can build them without APM. 

Читать далее
Rating 0
Comments 0

How to Disable Password Request or Account Password in Windows 10, 8 or 7

Reading time 6 min
Views 10K
Hetman Software corporate blog System administration *
Tutorial
Read this article to learn how to disable password request when booting Windows 10, 8 or 7. How to remove an account password and have Windows boot automatically and right to the desktop screen, without having to enter logins and passwords.

image
Read more →
Total votes 4: ↑0 and ↓4 -4
Comments 0

How to Recover Data from RAID 5, 1, 0 on Linux

Reading time 5 min
Views 4.6K
Hetman Software corporate blog Configuring Linux *System administration *Data recovery *
In this article, you will find a detailed tutorial on data recovery from RAID 0, 1 or 5. The array we have been testing was built on Linux, and the methods described here will help you recover your files even if one or several disks break down.

image
Total votes 2: ↑1 and ↓1 0
Comments 0

Linux Switchdev the Mellanox way

Reading time 7 min
Views 2.1K
Qrator Labs corporate blog System administration *Network technologies *Network hardware
This is a transcription of a talk that was presented at CSNOG 2020 — video is at the end of the page



Greetings! My name is Alexander Zubkov. I work at Qrator Labs, where we protect our customers against DDoS attacks and provide BGP analytics.

We started using Mellanox switches around 2 or 3 years ago. At the time we got acquainted with Switchdev in Linux and today I want to share with you our experience.
Total votes 18: ↑18 and ↓0 +18
Comments 0

The magic of Virtualization: Proxmox VE introductory course

Reading time 8 min
Views 2.3K
Selectel corporate blog System administration *

Today, I am going to explain how to quickly deploy several virtual servers with different operating systems on a single physical server without much effort. This will enable any system administrator to manage the whole corporate IT infrastructure in a centralized manner and save a huge amount of resources.
Read more →
Total votes 9: ↑9 and ↓0 +9
Comments 0
1

Authors' contribution