Category Administration
Linux Install Fest 05.19 will take place in Nizhny Novgorod on May 18, 2019. The event is held by NNLUG on the basis of the Nizhny Novgorod Radio Engineering College. Today, with the Internet available, it is not difficult to download this or that Linux distribution or find the answer to most questions that arise while working under this OS. However, the public meeting format remains popular among open source [β¦]
A Brief History of fio and etcd The performance of an etcd cluster is largely dependent on the performance of its storage. etcd exports some metrics to Prometheus to provide useful information about storage performance. For example, the wal_fsync_duration_seconds metric. The etcd documentation says that for storage to be considered fast enough, the 99th percentile of this metric must be less than 10ms. If you are planning to launch [β¦]
A small digression: this lr is synthetic. Some of the tasks described here can be done much simpler, but since the task of l/r is to get acquainted with the functionality of raid, lvm, some operations are artificially complicated. Requirements for tools to perform LR: Virtualization tools, for example Virtualbox Linux installation image, for example Debian9 Internet access for downloading several packages Connection via ssh to [β¦]
As electronic gadgets evolved from expensive exotics to mass products, there were more and more opportunities to customize them for yourself. Even the Chinese clone of Casio, which flooded the CIS after perestroika, called βAmerican Watches, by Montanaβ had 16 alarm melodies, which invariably pleased the owners who listened to these melodies every free minute. As soon as phones [β¦]
At its annual developer conference, Microsoft made several rather important presentations. We have chosen two of them. First: the summer build 19H2 of Windows 10 will ship a full-fledged Linux kernel based on version 4.19 dated October 22, 2018 for its own βLinux for Windowsβ subsystem (WSL - Windows Subsystem Linux). Second: in future enterprise builds of Chromium, reincarnations [β¦]
On May 20, we invite everyone who is interested in the topic of Open Source Networking to the third event of the OSN Meetup series this year. Event organizers: Yandex.Cloud and the Russian community of Open Source Networking. About Open Source Networking User Group Moscow Open Source Networking User Group (OSN User Group Moscow) is a community of passionate people who discuss ways to [β¦]
Today we want to talk about some of the latest updates to the Sherlock system [this is a high-performance cluster of Stanford University - approx. per.], which greatly speed up the listing of files in directories with a large number of entries. Unlike regular articles, this is more of an insider's report on how Sherlock is regularly worked on to keep it looking its best for our users. We hope [β¦]
The PIM protocol is a set of protocols for transmitting multicast in a network between routers. Neighborhood relationships are built in the same way as in the case of dynamic routing protocols. PIMv2 sends Hello messages every 30 seconds to the reserved multicast address 224.0.0.13 (All-PIM-Routers). The message contains Hold Timers - usually equal to 3.5*Hello Timer, that is, 105 seconds [β¦]
Good morning, Habr! We have nothing to add to the title of the article in our pre-notification - so everyone is immediately invited to the cat. Read and comment. Mobile development professionals will benefit from the revolution that on-device machine learning can offer today. The point is how much this technology enhances any mobile application, namely [β¦]
A carrier pigeon loaded with microSD cards can transfer large amounts of data faster and cheaper than almost any other method. transl.: although the original of this article appeared on the IEEE Spectrum website on April 1, all the facts listed in it are quite reliable. In February, SanDisk announced the world's first 1TB microSD flash card. She, [β¦]
I would like to tell you about the new CLI tool that I wrote to solve an old problem. The Terraform problem has long been a standard in the Devops/Cloud/IT community. The thing is very convenient and useful for dealing with infrastructure as code. There are a lot of goodies in Terraform as well as a lot of forks, sharp knives and rakes. Terraform is very convenient to do new things [β¦]
Hello, Habr. The first part described some signals that can be received on long and short waves. No less interesting is the VHF band, on which you can also find something interesting. As in the first part, we will consider those signals that can be independently decoded using a computer. For those who are interested in how it works, the continuation is under the cut. IN [β¦]
