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Questions and Answers

  • CentOSLinuxQuestions and AnswersRHELUbuntu

    How to Check Disk Performance (IOPS and Latency) in Linux?

    April 30, 2021

    In this article we will discuss how to check the performance of a disk or storage array in Linux. IOPS (input/output operations per second) is the number of input-output operations…

  • CentOSLinuxQuestions and AnswersRHELUbuntu

    Fix: Linux Boots into “Welcome to Emergency”

    March 19, 2021

    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…

  • CentOSLinuxQuestions and AnswersRHEL

    Configuring Network Settings on RHEL/CentOS

    February 15, 2021

    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,…

  • CentOSLinuxQuestions and AnswersRHEL

    Configuring Software RAID on Linux Using MDADM

    January 11, 2021

    MDADM 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…

  • CentOSLinuxQuestions and AnswersRHEL

    Install and Configure OpenVPN Server on Linux CentOS/RHEL

    December 31, 2020

    In 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…

  • CentOSLinuxQuestions and AnswersRHELUbuntu

    Compress, Defrag and Optimize MariaDB/MySQL Database

    November 3, 2020

    In 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.…

  • CentOSLinuxQuestions and AnswersRHEL

    Configuring High Performance NGINX and PHP-FPM Web Server

    October 23, 2020

    PHP-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…

  • CentOSLinuxQuestions and AnswersRHEL

    Install and Configure PostgreSQL on CentOS/RHEL

    October 19, 2020

    In this article we’ll install PostgreSQL 11 on Linux CentOS 7, perform the basic configuration, consider the main configuration file parameters and performance tuning methods. PostgreSQL is a popular free…

  • CentOSLinuxQuestions and Answers

    CentOS: How to Set Date, Time, TimeZone and NTP Synchronization

    October 12, 2020

    In this article, we’ll show you how to set time, date, timezone, synchronize time with an NTP server and fix typical issues in CentOS Linux.

  • CentOSLinuxQuestions and AnswersRHEL

    How to Mount Google Drive or OneDrive in Linux?

    August 16, 2020

    In this article we’ll consider how to connect free cloud storages like Google Drive or OneDrive in Linux CentOS. You can use them to backup data or just to exchange…

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Recent Posts

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Popular Posts
  • How to Configure MariaDB Master-Master/Slave Replication?
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