Install Vagrant on Ubuntu OS 18.04 and create first vagrant virtual environment

Vagrant is an open source command line tool for building and managing virtual machine environments. By default Vagrant can provision machines on top of VirtualBox, Hyper-V and Docker but many other providers such as Libvirt (KVM), VMware and AWS can be installed via the Vagrant plugin system.

Vagrant is mostly used by developers to easily set up a development environment, that matches the production environment. In this blog post, we’ll discuss how to install Vagrant on Ubuntu 18.04 Operating System. We’ll be using the VirtualBox provider, which is the default provider for Vagrant.
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Install and Configure Liquibase for Database CI/CD

In previous post, we discussed about the problem of Database deployment and use Liquibase for Database CI/CD purposes. We also discussed the basics of how liquibase works behind the scenes. Now the next step is to install and configure liquibase. The steps here are for Windows OS but Liquibase being a cross-platform tool, the same can be repeated on any major Operating System.

Install Java

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Mount a Windows NTFS Disk in Linux

Almost all of the Windows OS disks use NTFS as a filesystem. It has been there since long time. However it is proprietary to Microsoft and is therefore not open sourced. By default, you’ll not be able to mount NTFS disk in the linux distributions like CentOS, RHEL etc. However it is possible to install a driver that allows us to do this so that we can read and write data to an NTFS disk.

In this blog post, we’ll see how to do the same. For the demo purpose we’ll be mounting a NTFS disk, inside CentOS.
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Install Jenkins in offline mode on CentOS / RHEL

There are times when you would need to do an offline installation of the Jenkins. This may be to meet certain requirements of the workplace that you are operating in. I came across this issue some time back and internet is woefully out of articles for proper steps on this one. In this blog post, we’ll learn how to do an offline installation of Jenkins.

Install OpenJDK Java

First, we need to check what version of java is installed on the machine using:
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Use OpenSSL to work with SSL Certificates, CSR and Private Keys

OpenSSL is a robust, commercial-grade, and full-featured toolkit on the Linux that can be used for a large variety of tasks related to Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is also a general purpose cryptography library. It is licensed under an Apache-style license, which basically means that you are free to get and use it for commercial and non-commercial purposes subject to some simple license conditions.

It is already installed out of the box on the most linux distributions or available in the trusted package repositories. OpenSSL has been kind of standard in the open source domain to work with SSL and TLS protocols. If for some reason, it is not already installed, you can install it by using your distribution specific commands. Continue reading “Use OpenSSL to work with SSL Certificates, CSR and Private Keys”