Docker is an open source project which allows the creation and distribution of applications inside containers, which are standardized environments that can be easily replicated, independently from the host system. While in Red Hat Enterprise Linux 7 Docker was officially…
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Introduction: Git is a distributed revision control system with an emphasis on speed, data integrity, and support for distributed, non-linear workflows. Git is commonly used for source code management (SCM) and has become more used than old VCS systems like…
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Crontab is used for running specific tasks on a regular interval. Crontab is very useful for routine tasks like scheduling system scanning, daily backups etc. Crontab executes jobs automatically in the backend on a specified time and interval. In this…
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Asterisk is an open source framework for building communications applications. Asterisk turns an ordinary computer into a communications server. Asterisk powers IP PBX systems, VoIP gateways, conference servers and other custom solutions. It is used by small businesses, large businesses,…
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If you have set up MySQL replication, you probably know this problem: sometimes there are invalid MySQL queries which cause the replication to not work anymore. In this short guide I explain how you can repair the replication on the…
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In this tutorial we are going to learn How to Install KVM on CentOS 7 / RHEL 7. Here are some definitions of some important components. Virtualization is the ability to create a virtual copy of the physical hardware to…
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What is HTTP The HTTP (Hypertext Transfer Protocol) is an application-level protocol for distributed, collaborative, hypermedia information systems. HTTP is used to deliver data between web servers and web clients, HTTP is a TCP/IP protocol which means that it’s a…
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Linux Systems have three options to clear cache without interrupting any processes or services. Follow the steps how to clear memory cache in Linux. 1. Clear PageCache Only sync; echo 1 > /proc/sys/vm/drop_caches What it does: Frees page cache (cached…
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Nagios is a free and open-source computer software application that monitors systems networks and infrastructure. Nagios offers monitoring and alerting services for servers switches applications and services. It alerts users when things go wrong and alerts them a second time…
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Prerequisites For this whole installation and configuration setup of WordPress, the server must have a LAMP server installed as I described in this tutorial How To Install LAMP Stack On Ubuntu 16.04 Xenial Xerus before you proceed. Now let’s begin…
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