how to do it yourself
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Back to blog The site is unavailable – it is a rare but unpleasant error, which can occur for a number of reasons. Below we will consider how to diagnose and correct the situation with the help of handy tools, software, and utilities.
Zabbix is a free status tracking system for various computer network services, servers, and network equipment. The creator of this product is Alexei Vladyshev, and Zabbix LLC is currently engaged in its development. Data storage within this system is possible on the basis of MySQL, PostgreSQL, SQLite, or Oracle Database. Later in the article, we will tell you more about Zabbix, as well as provide a detailed guide on installation and configuration.
SWAP is an important mechanism that provides reasonable management of virtual server memory by moving some data from RAM to SSD. The technology is relevant in cases where the system needs so much RAM that the server does not have physically. Activating swapping allows you to put the data that is least frequently used in a special partition on the drive.
A virtual private server is an isolated environment with its own operating system and dedicated capacity, simulating a full-fledged physical server. That is, VPS is just a part of the physical server, which, nevertheless, has all its attributes:
On the Internet, all information is transmitted in the form of small blocks of data – the so-called packets. The packet itself consists of the start bits, header, trailer, and payload – each such block with data is transmitted along a specific route, which, in turn, is determined by the router. The network route is "laid" based on the information received from the routing tables according to the routing protocols and instructions of the network administrator.
Regularly updating the CMS is important not only because of the new features and capabilities introduced by developers with the release of patches and versions but also for security reasons. The thing is that there are necessarily some vulnerabilities in any software – hackers are not always aware of them, and developers themselves sometimes face surprises. If a vulnerability has been discovered, with a conscientious approach to the development process, an update will be released shortly after that, eliminating the "gap in defense". Well, the sooner you, as a CMS user, receive this update, the lower the risk that attackers will be able to take advantage of the vulnerability to extract benefits.
One of the most difficult plugins in terms of configuration is W3 Total Cache. At the same time, it is extremely useful for all WordPress sites, as it significantly increases the speed of the resource, reduces its loading time, and reduces the overall server load. After spending a little time studying this material, you will be able to figure out how to configure the W3 Total Cache caching plugin for WordPress.
During the initial configuration of the server, one of the most important steps is the installation of PHP extensions – they are needed for most CMS, including the popular WordPress, Magento, and Laravel. In this article, we will tell you which PHP scripts must be installed and how to do it through the console. We will install it on Ubuntu 20.04, but the syntax of the commands described below can be adapted to any other Linux system.
Sites manually written in HTML are characterized by increased performance and stability. Of course, provided that an experienced and attentive IT specialist writes the code. Such a site is ideal for placing static and materials in small volumes when it is not supposed to make regular changes to the content. HTML sites do not have a control panel, and web pages are edited manually – this creates certain inconveniences for "dynamic" projects, such as online stores, online service storefronts, news sites, etc.
The era of the free Internet is coming to an end – governments of different countries are gradually establishing control over providers in order to restrict citizens' access to certain sites. When it comes to criminal and immoral content that can really harm society, such restrictions are justified. But in recent years, cases of blocking sites for ridiculous reasons have become more frequent – for example, because the domain belongs to an unfriendly state.