Cloud Computing and Internet Infrastructure, Linux, Open Source Tutorials
Introduction In this tutorial we’ll learn how to enable IUS repository on CentOS 7. IUS stands for Inline with Upstream Stable. IUS will update RPM packages once new versions released by upstream developers. IUS will also not replace stock RPM packages or pacakges that shipped with distribution. The goal of IUS project is to provide … Read more
Introduction In this tutorial we will learn how to get EC2 Instance Metadata from an AWS EC2 instance. We will get the metadata using ec2-metadata and ec2 metadata. This is not typo. The tools name is really similar but one of them using dash on its name. Using EC2 Instance Metadata Query Tool (ec2-metadata) Install … Read more
In this tutorial we will test the behaviour of javax.net.ssl.trustStore option.
The objective is to check whether -Djavax.net.ssl.trustStore option append or replace the default java keystore being used by java.
Introduction In this tutorial, we will learn how to install MongoDB 4.4 on Ubuntu 20.04 LTS (Focal Fossa). We will also learn to configure and secure our MongoDB 4.4 installation Prerequisites Ubuntu 20.04 LTS (Focal Fossa) with sudo access. Add MongoDB Public Key First of all, let’s add the MongoDB public key. This key is … Read more
In this tutorial we learn how to use sleep command in Linux. Sleep command can be used to provide delay between two commands invocations.