The OCRE Project The Open Clouds for Research Environments project (OCRE) aims to accelerate cloud adoption in the European research community. It does so by bringing together cloud providers, Earth Observation (EO) organizations, and the research and education community. Cloud-based services can offer the European research community a wealth of powerful tools. Unfortunately, for many researchers, these are currently out …
Installing phpBB on Ubuntu 20.04
PhpBB stands for “PHP Bulletin Board.” It’s a free flat-forum bulletin board software solution. It’s licensed under the GPL license as free and open-source software. PhpBB can instantly establish a dedicated space for people to gather and communicate. It also supports popular database engines (MySQL, Oracle Database, SQLite, PostgreSQL, etc.), flat message structures, hierarchical sub-forums, user groups, full-text search, plugins, …
Configuring an Iptables Firewall: Basic Rules and Commands
Introduction Iptables is a command-line firewall utility. This means that it is software that allows you to configure a firewall on your system. It is typically available by default on Linux systems. In this guide, we will discuss some of the common rules and commands that go with the iptables firewall. Whenever a connection tries to establish itself with your …
Netcat Utility on Linux: Testing TCP/UDP Connections on a VPS with Netcat
Introduction One of the biggest advantages of using Linux is the plethora of helpful utilities it provides. The in-program features are usually sufficient for most programmers to do their work. This means that most of the time, you will not need to download external programs and software. The built-in tools will provide you enough utility. Among these helpful features is …
Find your favorite cloud hosting platform now on Mist
Cloudsigma has partnered with the open-source multi-cloud management platform Mist to provide users with the ease to manage multiple accounts across regions from a single window. Further, existing Mist users can diversify their multi-cloud and hybrid setups to include the reliability and ease of CloudSigma’s infrastructure. We are currently supporting the following operations with Mist: Get the list of the …
Using Grep and Regex to Search Text Patterns
The grep command is a powerful utility to search for patterns in text. It comes pre-installed in any Linux distro. Here is our tutorial that goes over setting up the LAMP Stack -Linux, Apache, MySQL, and PHP. The name grep stands for global regular expression print. The tool searches for the specified pattern in the input. In principle, it sounds …
How to Configure a Linux Service to Auto-Start After a Reboot or System Crash: Part 2 (Theoretical Explanations)
In this second installment of the two-part tutorial on configuring Linux services to start automatically after a reboot or system crash, we will discuss the init system in detail. You can refer to Part 1 of the series: How to Configure a Linux Service to Auto-Start After a Reboot or System Crash: Practical Examples here. The current tutorial will be …
How to Configure a Linux Service to Auto-Start After a Reboot or System Crash: Part 1 (Practical Examples)
Introduction In computing, things don’t always go as planned. Oftentimes unexpected system crashes prompt system admins to initiate reboots and restart of individual services. Figuring out and restarting every service your application needs to run after a system crash or reboot can be tedious. In this first installment of the two-part tutorial, we will show you how to configure services …
SQLite vs MySQL vs. PostgreSQL: Relational Database Management Systems Compared
Introduction Database management tools are mostly used by the relational data model. This model organizes data into tables consisting of columns and rows. While this model remains dominant in terms of storing and managing worldwide data, there are other data models such as NoSQL and NewSQL out there. In this tutorial we will delve into three of the most widely …
The Nitty Gritty of Networking: Learn about Terminology, Interfaces, and Protocols
Introduction In the modern world of technology, having in-depth knowledge of how networking works has become a requirement. If you are involved in server management, then you definitely need to be aware of how it works. Having detailed knowledge about the inner operations of your service will help you keep your services in line. It will help you employ the …
Installing and Setting up Docker on CentOS 7
Introduction Docker is a platform that makes running and managing application processes in containers easier. It provides a way to separate your applications from your infrastructure. Containers are very similar to virtual machines, but they are more portable, efficient, and easy to use. There are various ways to install Docker on Linux distributions. The most popular and easy way to …
How to Deploy your Virtual Infrastructure at CloudSigma with Terraform
Well, it turns out that I am the one to have the honor of making the following announcement: you can now deploy stuff with CloudSigma using Terraform! Ain’t that awesome?! Allow me to say: yes, it is awesome. One of the products of HashiCorp, Terraform, is a tool for building, changing, and versioning infrastructure safely and efficiently. You can easily deploy your infrastructure …