In my work I sometimes come across a problem when Linux is booted with the “Welcome to emergency mode” message. Most often, this problem occurs after an emergency power outage on…
CentOS
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CentOSKVMLinuxQuestions and AnswersRHELVirtualization
Install and Configure KVM Hypervisor on CentOS/RHEL
March 17, 2021In this article we’ll look on how to install and configure the KVM hypervisor on a server running Linux RHEL or CentOS. We will show how to create a virtual…
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In this article we’ll consider how to configure network on Linux CentOS/RHEL 7/8 and set network interfaces using configuration files, discover basic network configuration tools, etc. It is a relevant topic,…
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In this article we’ll show how to configure ICMP-based network device monitoring using ping in Zabbix. It is the easiest and the most popular task of agentless monitoring, when you…
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CentOSLinuxQuestions and AnswersRHEL
Configuring Software RAID on Linux Using MDADM
January 11, 2021MDADM is a tool that allows to create and manage software RAIDs on Linux. In this article we’ll show how to use mdadm (multiple disks admin) to create RAID array…
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CentOSLinuxQuestions and AnswersRHEL
Install and Configure OpenVPN Server on Linux CentOS/RHEL
December 31, 2020In this article we’ll consider the installation and configuration of an OpenVPN server running Linux CentOS/RHEL (7/8) and show how to join two remote computers (or offices) behind NAT into…
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Active DirectoryCentOSLinuxUbuntu
Zabbix: Single Sign-On (SSO) Authentication in Active Directory
December 17, 2020In this article we will consider a step-by-step configuration of a transparent SSO (Single Sign-On) authentication for Zabbix 4.0 (or newer) in Active Directory using Kerberos.
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CentOSLinuxUbuntuWindows Server 2016
Zabbix Installation and Basic Configuration Guide
November 23, 2020Zabbix is an enterprise-level open-source monitoring system. Currently, Zabbix is one of the most popular and powerful free monitoring systems. Due to its simple installation and configuration, Zabbix may be…
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CentOSLinuxQuestions and AnswersRHELUbuntu
Compress, Defrag and Optimize MariaDB/MySQL Database
November 3, 2020In this article we will explore some methods of table/database compression and defragmentation in MySQL/MariaDB, that will help you to save space on a disk a database is located on.…
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CentOSLinuxQuestions and AnswersRHEL
Configuring High Performance NGINX and PHP-FPM Web Server
October 23, 2020PHP-FPM (Fast Process Manager) is a separate implementation of FastCGI to run PHP scripts. You can use a combination of NGINX web server (processing static) and PHP-FPM to build a…