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LVM Management in CentOS/Red Hat 7 Linux
LVM (Logical Volume Manager) is the recommended partition method for CentOS/Red Hat 7 Linux. Specially, if we work on Mail Server, File Server, FTP Server, Web Proxy Server or any application where disk space changes frequently, the LVM partition is mandatory in this case. In my previous article, I discussed how to install CentOS 7.5 with LVM partitioning. If you are new here or CentOS 7 is not yet installed, I will suggest you to follow my previous article and install CentOS 7 with LVM partitioning and then continue this article. In this article, I will discuss how to manage LVM partitioning in CentOS/ Red Hat 7 Linux with the command line utility. Basic Components and Architecture of LVM Before going to start LVM management with command line tool, we should have basic knowledge on the basic LVM terms and architecture. The following three terms are the basic components of the LVM partitioning. Physical Volume: The underlying physical storage unit of an LVM is a block device such as a partition of a disk or the whole disk. To use the block device for an LVM logical volume, the device must be initialized as a physical volume (PV). Volume Groups: [...]
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How to Properly Downgrade MikroTik RouterOS and Firmware | October 2, 2019
MikroTik RouterOS is in constant development and new features or bug fixes are frequently available, sometimes even monthly. So, it is always recommend upgrading MikroTik RouterOS to a latest and stable version before beginning any configuration. But sometimes you may face that the upgraded version is not working properly according to your demand or you may upgrade to a new version that you don’t want. In this case, you should come back to your workable RouterOS version and firmware. Upgrading RouterOS [...]
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Boost Network Performance with MikroTik FastTrack in RouterOS 7 | October 27, 2025
Network administrators often face the challenge of balancing speed and stability. MikroTik’s FastTrack feature, introduced in earlier RouterOS versions and optimized in RouterOS 7, is a game-changing solution that dramatically enhances performance by reducing CPU load and improving packet handling efficiency. 🚀 What Is MikroTik FastTrack? FastTrack is a special processing method in RouterOS that allows packets from established and related connections to bypass the standard connection tracking process. In simple terms, once a connection is identified as safe and [...]
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MikroTik Port Forwarding using Winbox | July 23, 2018
MikroTik Port Forwarding or Port Mapping is a NAT application that is used to redirect a request from MikroTik IP address and port number combination to a local IP address and port number. For example, if you have a Web Server or FTP Server in your private/local area and want to access this local server from outside of your local area (from internet/public), you can apply MikroTik port forwarding or port mapping and can easily access your Web Server or [...]
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MikroTik Hotspot Configuration with ECMP Load Balancing | September 4, 2021
MikroTik Hotspot is one of the most popular services in MikroTik RouterOS and day be day the demand of Hotspot service is increasing. MikroTik Hotspot can be used in any Airport, Hotel, Restaurant, Campus, Camp, Office or any ISP network. It is also possible to establish a WiFi Broadband Network with the MikroTik Hotspot service. How to configure MikroTik Hotspot was discussed in one of my previous articles. Although MikroTik Hotspot configuration is not so difficult but sometimes we face [...]
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Setting Google as Default Search Engine | September 30, 2015
Google is one of the most popular search engines to any online user. It is said that no online user cannot go a single day without Google search engine. Google search statistics shows that over 40,000 search queries are processed every second by Google. If you have any query about any subject, just type in Google search box and Google will show you billion of results related to your search query within less than a second. So, usually you will want [...]
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How to Create Free SSL/TLS Certificate with OpenSSL | July 23, 2021
SSL/TLS certificate is required to encrypt data sent over internet communication. Without encryption, the sent data can be hacked by the middle man attack. SSL/TLS certificate is usually a pair key, public key and private key, solution where data is encrypted with public key and decrypted with private key. In public communication, public key is required to be signed by a CA (certificate authority) but in private communication, there is no need to be signed by any CA. If we [...]
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NGINX and PHP-FPM: A High-Performance Web Hosting Duo | September 26, 2024
When it comes to hosting high-performance websites or web applications, Nginx and PHP-FPM are often paired together due to their complementary capabilities. NGINX is a highly efficient web server which works seamlessly with PHP-FPM. PHP-FPM is a FastCGI Process Manager for PHP that is used to deliver fast, reliable, and scalable solutions for dynamic content. What is Nginx? Nginx (pronounced as “engine-ex”) is a lightweight, high-performance web server that is widely used for serving static content, load balancing and reverse [...]
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Free Internet Speed Test Online | August 31, 2015
You are here because you want to check your broadband internet speed. Don’t worry, I will show you how to check your internet speed from online absolutely free and fastest way. I will show you top 4 websites link from which your broadband internet speed can be checked so easily. I will also show you how to check bandwidth usage continuously with windows operating system’s utility and a third party software utility. So, keep reading this article and find how [...]
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How to Get Free SSL Certificate from ZeroSSL | June 13, 2020
SSL/TLS certificate is an essential part in today internet communication. Online communication cannot imagine without SSL/TLS certificate. SSL/TLS certificate makes online communication secure by encrypting data transmitted over public internet. So, most of the applications (Web, Email and VPN services) those transmit data over public internet use SSL/TLS certificate to secure communication. SSL/TLS certificate requires to be signed by Certificate Authority (CA). It is possible to create self-signed certificate with SSL certificate creation tools such as OpenSSL. Some router venders [...]
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