Today we will discuss the principles and models of GitOps, as well as how these models are implemented on the OpenShift platform. An interactive guide on this topic is available at the link. In brief, GitOps is a set of practical methods for using Git pull requests to manage infrastructure and application configurations. Within GitOps, the Git repository is viewed as a single source of information […]
The release of Proxmox Virtual Environment 6.1 has taken place, a specialized Linux distribution based on Debian GNU/Linux, aimed at deploying and managing virtual servers using LXC and KVM, and capable of serving as a replacement for products like VMware vSphere, Microsoft Hyper-V, and Citrix XenServer. The size of the installation ISO image is 776 MB. Proxmox VE provides tools for deploying a fully ready virtual system […]
We have already talked about Tarantool Cartridge, which allows you to develop distributed applications and package them. There’s just one thing left to do: learn how to deploy these applications and manage them. Don't worry, we have everything covered! We have gathered all the best practices for working with Tarantool Cartridge and written an Ansible role that will deploy the package on servers, start the instances, connect them into a cluster, and configure […]
Image: Unsplash When working with email newsletters, unexpected issues may arise. A common situation is when everything was working well, but suddenly the open rates of emails drop sharply, and email service providers start signaling that your newsletters are in the 'Spam' folder. What should you do in such a situation and how to get out of 'Spam'? Step #1. Checking compliance with a number of criteria First of all, you need to perform […]
Nowadays, it is no longer a question of why we need to collect service metrics. The next logical step is to set up alerting for the collected metrics that will notify you of any data deviations in convenient channels (email, Slack, Telegram). In the online hotel booking service Ostrovok.ru, all metrics of our services flow into InfluxDB and are displayed in Grafana, […]
The most notable changes include: The lockdown module, which restricts root user's access to kernel files and interfaces. Details. The virtiofs file system for forwarding specific host directories to guest systems. Interaction follows a 'client-server' model via FUSE. Details. The fs-verity file integrity control mechanism. Similar to dm-verity, but works at the level of Ext4 and F2FS file systems, not block devices. Details. […]
Technology companies and mobile gadget manufacturers have long been advertising various ways to reduce the negative impact of blue light emitted by device screens on users' eyes and overall well-being. In the new version of the popular browser Opera 55 for the Android platform, an updated dark mode is introduced, which will help reduce eye strain when interacting with the gadget. The main […]
The studio The Astronauts, creators of the adventure game The Vanishing of Ethan Carter, has been working on a new project — Witchfire — for over two years. A year ago, the developers stated that the release of this horror shooter about witch hunting would likely not happen until 2020. In the latest update on the official blog, there is no mention of release dates, but the authors shared gameplay snippets from […]
Testing has begun for the first alpha version of the installer for the next major release of Debian — 'Bullseye'. The release is expected in about one and a half to two years. Key changes in the installer include: Mentions of CD and CD-ROM have been replaced with 'installation media'; In apt-setup, the generation of strings in sources.list files for updates related to security issue fixes has been redesigned. The {dist}-updates strings have been renamed to {dist}-security. Separation of blocks in sources.list is allowed […]
The most popular example of Java code published on StackOverflow turned out to contain an error that leads to incorrect results under certain conditions. This code was posted in 2010, has accumulated over a thousand upvotes, and has been copied into many projects, appearing in GitHub repositories around 7,000 times. Notably, the error was not discovered by users copying this […]
The release of the nftables 0.9.3 packet filter has been published, evolving as a replacement for iptables, ip6tables, arptables, and ebtables by unifying the packet filtering interfaces for IPv4, IPv6, ARP, and network bridges. The nftables package includes user space components for the packet filter, while the kernel-level operation is provided by the nf_tables subsystem, which is part of the Linux kernel […]
The specialized Linux distribution CAINE 11.0 has been released, designed for forensic analysis and hidden information retrieval. This live build is based on Ubuntu 18.04, supports UEFI Secure Boot, and comes with Linux kernel 5.0. The distribution allows for the analysis of residual information after a breach on Unix and Windows systems. It includes a wide array of utilities for work. Notably, it features a specialized tool […]