Fundamentals of Cloud Computing

let's take a look at the summary of the fundamentals of cloud computing. Cloud services are usually classified by their general use cases that make up an IT infrastructure. You can think of them as lego blocks. One piece of a lego block looks dull and doesn't really mean much. But once you've learned how to fit those blocks on top of each other in a creative fashion, you could build anything that you can think of! Interestingly enough, I've seen someone build a titanic replica out of lego pieces before. And just like those lego blocks, you can create any Cloud architecture that you want in a short span of time by connecting the fundamental blocks together in congruence to your needs.

Some of the fundamental blocks of Cloud Computing are Compute, Storage, Database, Networking, and Security.

Compute

Instead of provisioning your server in a local data center, you can outsource the computing power needed by your server from a cluster of virtual machines in the Cloud. Compute is the processing power required by applications and systems to process data and carry out computational tasks.

The compute capacity of a virtual machine solely depends on the hardware resources attributed to its host computer. The compute resources refer to the CPU, Storage, Memory, and the Network Bandwidth available to the machine where your VM is running. Today, most cloud service providers have done a pretty good job designing a wide selection of preconfigured machines that can accommodate a variety of workloads.

Storage

The main benefit of storing data in the cloud is the convenience of increasing your storage capacity without maintaining and buying more local hard drives. You cannot prevent data corruption from happening in the event of a hard disk failure. In the cloud, your data is stored persistently across logical pools in a physical storage hosted by your cloud service provider. You can store different types of data such as objects, files, and backups.

Database

The database is a system that stores and manages structured and unstructured information. Databases in the cloud are typically managed and offered as a service by a cloud service provider. This means that maintaining and updating the underlying components of your database instance, such as OS updates and software patches, are no longer your responsibility. Databases in the cloud are also scalable and highly available in nature.

Networking

The cloud is a large ecosystem of computers that communicate and integrate with each other to deliver a specific service to customers. Cloud service providers make sure that they always maintain a high speed network connection within their infrastructures to support the needs of their end users. You can use the cloud to provide a global link to distribute your application all over the world.

Security

In the cloud, data is stored in secured remote data center facilities. This means that threats like theft and data breach are unlikely going to happen. As a cloud user, your responsibility is more on data management. The cloud has sets of tools to help you enforce high levels of security. For example, you have control on the encryption and decryption of your data. You can also choose to authenticate and authorize selected users and services to access your applications.

Linux File System Hierarchy

                            

All files on a Linux system are stored on file systems which are organized into a single inverted tree of directories, known as a file system hierarchy. This tree is inverted because of the root of the tree is said to be at the top of the hierarchy, and the branches of directories and subdirectories stretch below the root.

What is a Computer Network

                            

A computer network is a group of computers connected with each other through a transmission medium such as cable, wire, etc. Connected computers can communicate with each other share the recourses (such as hard disk, files, and folders) and access remote devices or another network. A network is a multipurpose connection, which allows a single computer to do more.

What is Linux

                                 

You probably know only Windows, but now you want to use Linux because you read that Linux is better than Windows as it’s more secure and you don’t have to buy a license to use Linux.

Linux has been around since the mid-1990s and has since reached a user-base that spans the globe. Linux is all over the place: It’s in your phones, your thermostats, in your cars, refrigerators, and televisions. It also runs most of the Internet, all the world’s top 500 supercomputers, and the world’s stock exchanges.

Facebook Messenger desktop app launches for Windows and Mac

Facebook has launched a Messenger app for MacOS and Windows so you can video chat on your computer and stay connected with friends and family all over the world.

“Now more than ever, people are using technology to stay in touch with the people they care about, even when physically apart,” Stan Chudnovsky, VP of Messenger at Facebook, said, “Over the past month, we saw more than a 100 percent increase in people using their desktop browser for audio and video calling on Messenger. Now with apps for MacOS and Windows, the best of Messenger is coming to desktop, including unlimited and free group video calls.”

What Is the Best Free Cloud Storage

Cloud storage is a way of storing data online instead of your local computer. It requires an internet connection in order to upload, modify, and share documents, presentations, spreadsheets, images, audio, video, etc. with others.

Yes, there are a number of free cloud storage options available these days While nearly all have premium offerings that provide more space, the free cloud storage offered is usually more than enough for most people.

Here, we list some entirely free packages, as well as big names that offer free.

How to Reset the Forgotten Root Password in RHEL/Centos 8

First, boot into your RHEL/Centos 8 system and select the kernel you wish to boot into. Next, interrupt the booting process by pressing ‘e’ on your keyboard.

On the next screen, locate that begins with kernel= and append the parameter rd.break and press Ctrl + x. On the next screen, ensure that you remount the sysroot directory with read and write permissions. By default, it is mounted with read-only access rights indicated as ro.

Linux Alternatives VirtualBox

VirtualBox is one of the most popular virtualization programs out there. It comes packed with a lot of powerful features and is a free open source program under the GNU General Public License. But while VirtualBox is fantastic, it isn’t the only virtual machine option out there.

1. KVM (Kernel-Based Virtual Machine)

KVM is a platform that uses Linux as the host system and can run other Linux distros, Hackintosh, and Windows. This VM is one of the more popular platforms out there right after VirtualBox and offers a stable and reliable substitute. Not only that, but KVM has been around for a long time and hosts an excellent set of features and customizability.

What is the Benefits of Cloud Computing

Many of you are either aware of or heard about cloud computing. But do you really know what cloud computing is and how it can help you grow your business? The Revolution of cloud technology has given businesses an opportunity to achieve the highest business goals and experience a competitive edge. Big corporates are using cloud platforms for many years. But, now small companies are taking their business model to the next level with the effective use of cloud solutions. Cloud technology has allowed SMEs an opportunity to acquire markets, where a few years back larger organizations were ruling. As most of the business has become on-demand and need-based, it gave the business of every size a significant competitive advantage and allowing them to complete in a much larger market space.