Performance checks and gradual degradation of distributed systems

 3r33466. 3r3-31. Performance checks and gradual degradation of distributed systems  3r33466.
As always, thanks Fred Hebert and Sargun Dhillon for having read the draft of this article and offered some invaluable advice. 3r311.
 3r33466.
In its 3r3r166. speed report 3r3449. 3r318. Tamar Berkovichi
from Box stressed the importance of performance checks during automatic database failover. In particular, she noted that monitoring the runtime of end-to-end queries, as a method for determining database health, is better than simple echo testing (pinging).
 3r33466.
switches traffic to another node, thereby eliminating the problem. We had to build in some security ...
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OpenVPN with Extended Authentication and Authorization

 3r33984. 3r3-31. The article discusses the configuration of OpenVPN with additional features:
 3r33984.
 3r33984.
 3r33984.
certificates on tokens for primary authentication (for example, Rutoken) 3r-3243.  3r33984.
LDAP backend for secondary authentication (for example, ActiveDirectory) 3r-3243.  3r33984.
Filtering internal resources available to the userx (via iptables)
 3r33984.
 3r33984. The configuration of clients under Linux, Windows and MacOS is also described.
 3r33984. Nyr /openvpn-install , run as root.
 3r33984.
 3r33984. 3r33966. 3r3393939. git clone https://github.com/Nyr/openvpn-install.git
cd ...
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Quick setup of storage Aerodisk Engine

Quick setup of storage Aerodisk Engine . Also, the guys got their YouTube 3r3159. channel with training videos for setting up and working with the system. And even before the new year, Aerodisk launched 3r3133. promo program in which you can buy storage at a discount of up to 60%! The offer, in our opinion, is excellent. 3r33333.  3r33333. 3r33333.  3r33333. This time Aerodisk provided us with the ENGINE N2 storage system in All-flash configuration for self-study and configuration, and we will share this experience. 3r33333.  3r33333. In the framework of our acquaintance with ENGINE, we will make a cycle of 3 articles:
 3r33333. 3r33333...
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mRemoteNG again cake

 3r3197. 3r3-31. mRemoteNG again cake If you are the administrator of several dozen Windows and Linux servers, packs of switches and routers, then without a remote connection manager you can quickly and safely go crazy. 3r3182.  3r3197. 3r3182.  3r3197. 3r3174. TL; DR 3r3-33175. . mRemote, the development of which was abandoned long ago, has gained a new life. If you use RDCMan or Remote Desktop free from Devolutions - try mRemoteNG! 3r3182.  3r3197. 3r311. 3r3185. 3r3182.  3r3197. 3r3174. mRemote [/b] - In the past, a very popular remote connection manager. Unfortunately, its development was abandoned around 2009. Flaws in the interface...
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Storage Class Memory in the storage system - if you need even faster

 3r3174. 3r3-31. Storage Class Memory in the storage system - if you need even faster As you probably remember, HPE has long invested in the topic of new types of data warehousing (of course, The Machine ) And in optimizing access to the repositories (our membership in Gen-Z consortium ). 3r3143.  3r3174. 3r3143.  3r3174. The goal of this movement is to speed up the work of our customers' applications. And the movement is multilevel: while the completely new architecture of the computer systems The Machine (the so-called memory-centric architecture) is being forged, we understand that we need to accelerate now. Let's see it can be done today, and what will HPE have ...
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High availability of MySQL in GitHub

High availability of MySQL in GitHub3r33762. GitHub uses MySQL as the main data repository for everything that is not related to r3r3748. git therefore, the availability of MySQL is key to the normal operation of GitHub. The site itself, the GitHub API, the authentication system and many other features require access to databases. We use several MySQL clusters to handle various services and tasks. They are set up according to the classical scheme with one
chiefly
writable node and its replicas.
Replicas
(the remaining nodes of the cluster) asynchronously reproduce the changes of the main node and provide read access.
3r33737...
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Using optical character recognition in DeviceLock DLP to prevent document leaks

3r3114. One of the basic tasks for DLP systems is the detection of various state identification documents (passports, birth certificates, driving licenses, etc.) in the stream of transmitted data, and the prevention of their unauthorized distribution. 3r3117. 3r33112.  3r3124. 3r3114. Using optical character recognition in DeviceLock DLP to prevent document leaks basically. 3r3117. 3r33112.  3r3124. 3r3114. However, what to do when it comes to document scans? 3r3117. 3r33112.  3r3124. 3r3114. Optical Character Recognition (OCR) for all major languages, including Russian, English, German, Chinese, Japanese, etc. Text can be extracted from scanned documents, photographed ...
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We are raising IDS /NMS: Mikrotik and Suricata with a web interface

 3r3741. 3r3-31. Apparently, I have such a karma: no matter how I undertake the implementation of any service on the open source, I will definitely find a bunch of manuals, each individually in my particular case will not work, the ready solution will not start or dislike it, what else will happen somebody is indigestible, and as a result you have to make your own way to the result.
 3r3741.
 3r3741. This time all the manuals were on ELK5 or even older, but I didn’t really like to install the software of the previous versions. I wanted to take a software with the most promising terms of support: ...
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Generator masks extensions dialplan Asterisk

 3r33576. 3r3-31. The system administrator who works with Asterisk often needs to compile masks for dialplan extensions at intervals of DEF codes. Manually doing it is time consuming, and almost the only one working script , which can be found on the Internet, in fact, not so working. 3r33561.  3r33576. 3r33561.  3r33576. I hope someone will use a small cli generator for go, which I recently had to write in order to update the existing dialplan. 3r33561.  3r33576.
3r33561.  3r33576. Features: 3r33561.  3r33576. 3r33561.  3r33576. 3r318.  3r33576.
filter by region
 3r33576.
filter by operator
 3r33576.
simple o...
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Installing BigBlueButton on Ubuntu ???

Good day, today I decided to write my first post at the end.
3r3198.  3r3208.
I will not tell much about BigBlueButton, further BBB, I will only say that BBB is:
3r3198.  3r3208. 3r3164.  3r3208. 3r3172. Free (GNU Lesser General Public License). 3r3173.  3r3208. 3r3172. For Video-Audio Conferences. 3r3173.  3r3208. 3r3172. For presentations. 3r3173.  3r3208. 3r3172. For webinars.
3r3-3160. 3r3173.  3r3208. 3r33175. 3r3198.  3r3208.
Let's get started
3r3198.  3r3208.
A little background.
3r3198.  3r3208.
In our case, we use Ubuntu ??? x64 and advise you the same)
3r3198.  3r3208.
BBB requires: 3r3201 ...
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