Basic CentOS Linux Commands – Before learning the tools of a CentOS Linux Administrator, it is important to note the philosophy behind the Linux.

Installing Wireguard VPN Server in Centos 8. Site-to-site VPN

WireGuard is a free open source software application and communications protocol that implements VPN techniques for creating secure point-to-point connections in routed or bridged configurations. Setting up the main server Add EPEL and Elrepo repositories $ sudo dnf -y install epel-release elrepo-release Checking if the correct driver is connected $ sudo lsmod | grep 8021q… read more »

Installing Prometheus on Centos 8, NGINX Basic Auth

Prometheus is a free software application used for event monitoring and alerting. It writes metrics in real time to a time series database built using an HTTP request model, with flexible requests and real time alerts. Installing Prometheus Add the system user prometheus $ sudo useradd -M -s /bin/false prometheus Create the necessary directories for… read more »

Install Munin on CentOS 7

Munin is a web-based resource monitoring tool that can help analyze resources and utilization of servers and services. It offers monitoring and alerting services for servers, switches, applications, services. Munin has a master / slave architecture in which master connects to all slaves at regular intervals and requests their data, which is then stored in… read more »

Ansible. Выполнение специальных команд

В первой части серии Ansible вы познакомились с Ansible и научились его устанавливать. В этом руководстве вы узнаете, как управлять статическим инвентарем в Ansible. Вы также разберетесь с различными настройками конфигурации Ansible. Кроме того, вы изучите несколько модулей Ansible и сможете запускать команды Ansible Ad-Hoc.   Создание пользователя Ansible Несмотря на то, что вы можете использовать пользователя root… read more »

Set SELinux context label for Podman custom graphroot directory

I want to set up a custom directory to store container data created with Podman. How can I change the file type (and its content) of the directory to the context type used by Podman? On systems running SELinux, all processes and files are marked in a way that represents security-related information. If you try… read more »

How to set timers, alarms and stopwatches in CentOS 8

In this article, I will show you how to set timers, alarms and stopwatches on your CentOS 8 system. We will perform these steps in two different ways. First, using: Graphical user interface Terminal In the GUI we will use the GNOME Clocks utility, in the command line we will use the timer and sleep… read more »

Install CachetHQ on CentOS 7

In this tutorial, we will show you how to install CachetHQ on a CentOS 7.1 VPS with MariaDB, PHP-FPM 5.6, and Nginx. CachetHQ is an open source system built on top of Laravel 5. This tutorial should work on other Linux VPS systems, but was tested and written for CentOS 7 VPS. Login to your… read more »

Ansible. Introducing Ansible

In this Ansible article series, you will learn all the skills you need to manage and automate IT infrastructure operations with Ansible. What is Ansible? Ansible is an open source configuration management, software provisioning, and application deployment tool that makes it easy to automate application deployment and IT infrastructure operations. Ansible is very lightweight, easy… read more »

Installing Slack on CentOS 8.0

Slack is a collaboration software that is used to communicate between various members of a company’s team. It has various work areas where teams are connected and can make decisions in a common shared environment. This allows users to organize conversations using different channels. The channel is used for group discussions, and team members can… read more »

How to install Arduino IDE on CentOS 8

Arduino IDE stands for Arduino Integrated Development Environment. Arduino is used to create electronic devices that interact with the environment using actuators and sensors. The Arduino IDE contains an editor that is used to write and download programs to the Arduino board. Before starting to create projects via Arduino, the user needs to configure the… read more »