Technology Archive

10 Jul 2017

Understanding Linux initrd – Initial RAM Disk

initrd (initial RAM disk) is a temporary root file system that is mounted during system boot to support the two-state boot process. The initrd is bound to the kernel and loaded as part of the kernel boot
10 Jul 2017

How To Deploy a Rails Application with Apache using Phusion Passenger

A passenger is an open source web application server for Ruby. It handles HTTP requests, manages processes and resources, and enables administration, monitoring, and problem diagnosis. A passenger is very easy to use, makes deploying in production
8 Jul 2017

How to Enable TLS Version in mod_ssl on Apache Webserver

mod_ssl combines the flexibility of Apache with the security of OpenSSL. mod_ssl is an Apache module that provides SSL v2/v3 and TLS v1 support for the Apache HTTP Server. SSL 2.0 and SSL 3.0 having lots of
7 Jul 2017

How to Install Ruby 2.4.0 on CentOS/RHEL with RVM

Ruby 2.4.0 is a dynamic, object-oriented programming language.We are using RVM, which stands for Ruby Version Manager. RVM is a command-line tool which allows you to easily install, manage and work with multiple ruby version of Ruby
7 Jul 2017

How to Install Ruby 2.3.3 on CentOS/RHEL with RVM

Ruby is a dynamic, object-oriented programming language.We are using RVM, which stands for Ruby Version Manager. Ruby 2.3.3 provides substantial performance and reliability improvements, includes frozen string literal pragma, safe navigation operator and many others, while maintaining
7 Jul 2017

How to Downgrade PHP 7.1 to 5.6 on Ubuntu

Suppose your system is Ubuntu and PHP 7.1 install on your system. But your application is not supporting PHP 7.1. So you need to downgrade PHP 7.1 to 5.6 without removing the new version. You can simply
6 Jul 2017

How To Generate SSL Certificate Signing Request (CSR) in Linux

A Certificate Signing Request (CSR) is an intermediate form of an SSL certificate that enables a Certificate Authority (CA) to generate a signed SSL certificate and verify the identity of a domain’s owner. A CSR is an
5 Jul 2017

How to Install Ruby 2.2.4 on CentOS/RHEL with RVM

Ruby 2.2.4 is a dynamic, object-oriented programming language.We are using RVM, which stands for Ruby Version Manager. RVM is a command-line tool which allows you to easily install, manage and work with multiple ruby version of Ruby
5 Jul 2017

How to Install Samba 4.3.4 on CentOS/RHEL 7

Samba is a free Open Source software which provides a standard interoperability between Windows OS and Linux/Unix Operating Systems. Major features for Samba4: 1) Support for the ‘Active Directory’ logon and administration protocols that support Windows XP,
4 Jul 2017

Puppet vs. Chef vs. Ansible vs. SaltStack

Puppet, Chef, Ansible, and Salt were all built to make it much easier to configure and maintain more than hundred of servers. It’s not mean that smaller companies won’t take benefit of these tools, as automation and