DEV Community: Emmanuel Essien

KUBERNETES CLUSTERS

Emmanuel Essien — Sat, 15 Feb 2025 14:21:07 +0000

Introduction

Kubernetes also known as K8s is a powerful, open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications. It provides a highly resilient, scalable, and efficient environment for running cloud-native applications. To understand how Kubernetes operates, it is essential to explore its architecture, which consists of the Control Plane, Worker Nodes, and several interconnected components.

What Is a Cluster?

A cluster is a group of interconnected computers (or nodes) that work together to perform tasks. Each node in the cluster contributes resources like CPU, memory, and storage, allowing the cluster to handle more significant workloads and provide higher availability and fault tolerance.

What Is A Kubernetes Cluster?

A Kubernetes cluster is a group of nodes (computers) that work together to run containerized applications. It provides a flexible and efficient environment for deploying, managing, and scaling applications.

Core Components of Kubernetes Cluster

Control Plane (Master Node)

The Control Plane is responsible for managing the Kubernetes cluster. It makes global decisions about the cluster (e.g., scheduling applications) and ensures the system's desired state is maintained.

2.Worker Nodes (Node Components)

Worker nodes are responsible for running application workloads.

3.Pods: The smallest and simplest unit in Kubernetes. A pod represents a single instance of a running process in your cluster and can contain one or more containers.

What is MicroK8s?
MicroK8s is an option for deploying a single-node Kubernetes cluster as a single package to target workstations and Internet of Things (IoT) devices. Canonical, the creator of Ubuntu Linux, originally developed and currently maintains MicroK8s.

How To Create Kubernetes Cluster

Several options are available when you're running Kubernetes locally. You can install Kubernetes on physical machines or VMs, or use a cloud-based solution such as Azure Kubernetes Service (AKS).

We are going to explore a Kubernetes installation with a single-node cluster. We also are going to learn how to configure and install a MicroK8s environment that's easy to set up and tear down. Then, you deploy a Kubernetes service and scale it out to multiple instances to host a website.

Install MicroK8s on Linux

The Linux installation of Micro8s involves the few steps. Open a terminal window and execute the commands as in the following instructions:

Install the MicroK8s snap app.

sudo snap install microk8s --classic

You should get this message upon successful installation

2.The next command is to run the status command.

To check the status of the installation, run the microk8s.status --wait-ready command.

3.To install the add-ons, run the following command. sudo microk8s.enable dns dashboard registry

Mine is enabled already.

You're now ready to access your cluster with kubectl.

Explore the Kubernetes cluster

What Is Kubectl?

Kubectl is a command-line tool that lets you interact with a Kubernetes cluster. You can use it to deploy applications, check on your resources, and manage your cluster.

MicroK8s provides a version of kubectl that you can use to interact with your new Kubernetes cluster. This copy of kubectl allows you to have a parallel installation of another system-wide kubectl instance without affecting its functionality.

Execute the snap alias command to create an alias for microk8s.kubectl as kubectl. This step streamlines usage.

Display cluster node information
Check the nodes that are running in your cluster.

MicroK8s is a single-node cluster installation, so only one node is. It is important to note that this node functions as both control plane and a worker node in the cluster. Confirm this configuration by executing the kubectl get nodes command. To obtain information about all the resources in your cluster, execute the kubectl get command.:

This indicates that there is only one node (virtual machine (VM)) in the cluster named emmanuel. that is in Ready state, which that the control plane may schedule workloads on this node.

Let's assume that you need to find the node's IP address. To fetch extra information from the API server, run the -o wide command

Kubernetes uses a concept called namespaces to logically divide a cluster into multiple virtual clusters.

To fetch all services in all namespaces, pass the --all-namespaces:

Now that you can see the services running on the cluster.

Install A Web Server On a Cluster

NGINX (pronounced "Engine-X") is a web server that helps websites and applications run smoothly. It is fast, lightweight, and efficient, making it popular for hosting websites, managing web traffic, and handling multiple users at once.

1.We are to use NGINX for ours. To create NGINX deployment, run the kubectl create deployment command. Specify the name of the deployment and the container image to create a single instance of the pod.

2.To fetch the information about your deployment, run kubectl get deployments

3.The deployment created a pod. To fetch info about your cluster's pods, run the kubectl get pods command

Test the website installation

Test the NGINX installation by connecting to the web server through the pod's IP address.

A Pod is the smallest unit in Kubernetes that runs your application. Think of a Pod as a box that holds your app.

To find the pod's address, pass the -o wide comand:

Notice that the command returns both the IP address of the node, and the node name on which the workload is scheduled.

To access the website, run wget on the IP listed before

Scale a web server deployment on a cluster

If there is a sudden increase in users accessing your website, causing it to due to the load, you can deploy additional instances of the site in your and distribute the load across instances.

To scale the number of replicas in your deployment, the kubectl scale command. Specify the desired number of replicas and the name of the deployment. To scale the total of NGINX pods to three, run the kubectl scale command:

The scale command allows you to scale the instance count up or down.

To check the number of running pods, execute the kubectl get command, followed by the -o wide command.

Notice that you now see three running pods, each with a unique IP address.

Kubernetes, often abbreviated as K8s, revolutionizes deployment and management ofized applications. Its robust architecture, comprising the Control Plane and Worker Nodes, high availability, scalability and efficient resource management. By understanding the core components and concepts of Kubernetes such as containertration and management, developers and IT professionals can leverage its full potential to build resilient scalable systems

Deploying a Kubernetes cluster, on physical machines, virtual machines, or using a cloud-based solution like Azure Service (AKS), offers flexibility and ease of management. The-by-step guide on installing MicroK8 and deploying applications, such as NGINX, provides a practical approach to getting started with Kubernetes. Scaling applications and managing workloads become seamless tasks, allowing for better handling of increased user traffic and ensuring consistent performance.

As the demand for scalable and resilient systems grows, Kubernetes out as a powerful tool to meet these challenges, empowering organizations to achieve infrastructure goals.

Automate Your Cloud with Terraform and Azure CLI: Step-by-Step Tutorial

Emmanuel Essien — Mon, 20 Jan 2025 23:45:00 +0000

What is Terraform?
Terraform is a tool that helps you create and manage cloud resources like virtual machines, networks, databases, and more using code. Instead of manually clicking through a cloud provider's interface, you write a file describing what you want,and Terraform makes it happen.

Why Use Terraform?

Automation: No need to manually configure resources.
Consistency: The same code can be reused to deploy environments.
Version Control: Store configurations in Git to track changes.
Multi-Cloud Support: Works with AWS, Azure, Google Cloud, and more.

STEPS TO INSTALL,CONFIGURE AND USE TERRAFORM

First step is to install Terraform on our local environment (Linux) to do that we click the link https://developer.hashicorp.com/terraform/tutorials/aws-get-started/install-cli Then we click on Linux and we copy the first code and paste on our environment terminal.

Move to the next code, copy and paste in your environment.

Copy the next code also and do the same.

Do the same also for the next code.

Copy the next two code simultaneously and paste on your terminal in your local environment.

Next we need to verify that we have successfully installed terraform we type terraform -help

What is AZURE CLI

Azure Command-Line Interface is a tool u can use to manage Azure Resources directly from your command line. It is a way to communicate with Azure using text commands instead of clicking around in a web portal.

Why Use Azure CLI?

Efficiency: Quickly perform tasks without navigating through a web interface.
Automation: Easily script and automate repetitive tasks.
Cross-Platform: Works on Windows, macOS, and Linux.

Getting Started

Install Azure CLI: Follow the installation guide for your operating system, for this we are using LINUX operating System https://learn.microsoft.com/en-us/cli/azure/install-azure-cli-linux?pivots=apt copy the code and paste in ur local environment

To Prove that it worked we type the code az login then u will get a url at the end of the page to redirect you to your azure login page

After successfully logging into your Azure account from the URL provided you should get this popping up.

You choose your current subscription if you have multiple.

Next we are going to create a RG (resource group), using the command az create --name (rg name) --location (Preferred location)

If u check your azure account, you will see that u have a created a resource group and location.

CREATING A TERRAFORM / Running Terraform

Initialize: terraform init
Plan: terraform plan
Apply: terraform apply

We are going to create a directory using mkdir (name of the directory) and CD (name of the directory) into the directory.

Next we create a terraform file using our text editor VIM to create and edit the file i am going to name it main.tf

Note: TOUCH command only creates the file, But VIM allows use to create and edit the text file press I to be in insert mode to be able to type in our text file

Next we generate a main.tf file that will deploy a resource group to azure in our text file making sure your azure subscription is added. To save this and exit our text editor we hit Shift column wq

Next we hit the code terraform init this will initialize a working directory containing. It is the first command you run when you start working with Terraform.

Next we need to hit terraform plan this helps you preview the changes Terraform will make to your infrastructure before actually applying them.

Terraform Apply is the next code will implement the terraform plan.

You will be asked to confirm by typing Yes

For confirmation head to your azure to confirm that u have successfully created a resource group

DOCKER NEED TO KNOW

Emmanuel Essien — Thu, 19 Dec 2024 23:59:42 +0000

NEED TO KNOW ABOUT DOCKER

Emmanuel Essien ・ Dec 19

#webdev #beginners #cloud #devops

NEED TO KNOW ABOUT DOCKER

Emmanuel Essien — Thu, 19 Dec 2024 23:58:24 +0000

Docker is a platform designed to help developers build, share, and run applications using containers. Docker itself is not a platform as a service; rather, it is a containerized platform.

CONTAINERS
Containers are lightweight, portable units that bundle an application with all its dependencies ensuring it runs consistently across different environment.

BASIC DOCKER CONCEPTS

CONTAINERS: Containers are isolated environments that package your application and its dependencies. They are like lightweight virtual machines but share the host system kernel, making them faster and less resource-intensive
IMAGES: A docker image is a lightweight, standalone, and executable software package that includes everything needed to run an application.
Docker Engine:
This is the core of Docker that allows you to build, run, and manage containers.
Docker File:
A text file with a set of instructions for building a Docker image. For example, it defines the base image, application code, dependencies, and any configuration needed.
Docker Hub:
A cloud-based repository where you can find and share Docker images. It’s like GitHub but for container images.

BASIC DOCKER COMMANDS

FROM:
Defines a base image, it can be pulled from Docker Hub.
(For example, if we want to create a JavaScript application with Node.js as the backend, then we need to have Node as a base image so it can run the Node application.)
RUN:
Executes a command in a new image layer (we can have multiple RUN commands).
CMD:
Command to be executed when running a container.
(It is advised to have only one CMD command. If a Dockerfile has multiple CMDs, it only applies the instructions from the last one.)
EXPOSE:
Documents which ports are exposed.
(It is only used for documentation.)
ENV:
Sets environment variables inside the image.
COPY:
Used to copy your local files/directories to the Docker container.
ADD:
It is a more feature-rich version of the COPY instruction.
• COPY is preferred over ADD.
• The major difference between ADD and COPY is that ADD allows you to copy from a URL as the source, while COPY can only have local ones.

RUNNING DOCKER ON UBUNTU

STEP 1: U need to install docker engine on ubuntu on your VM-Ware Workstation. Open your browser on your VMWare Virtual Machine https://docs.docker.com/engine/install/ubuntu/ scroll till INSTALL USING DOCKER APT REPOSITORY copy the code. Head to terminal on your VMWare Environment make sure you are in root directory using the command sudo su then paste it in your VM Ware workstation

Copy the second code from the website and paste

STEP 2: To Verify that we have successfully installed docker we paste the third code in our environment if it shows HELLO WORLD it means docker has been successfully be installed.

RUNNING NGNIX USING A CONTAINER

We head to a docker hub. We are going to generate a container image.

Search for ngnix

We need to pull the image.to do this we use the command docker pull nginx This will pull it the image from a repository and download it in our local environment.

After downloading the command we need to run the container images. We run the command docker run --detach --all nginx:latest the dash (-d) will run docker in the background.

We run the command docker ps to get the port. This command will give us all the information about the running command.

Another step is to get the IP address we run the command ip addr show

Notice the IP ADDRESS from number 2 in the terminal we have to copy it and paste it our browser add column (:) the port number also, as shown below

This confirms that we have successfully installed the NGINX on the system.

Next we create a directory mkdir (name of directory) and enter into it using CD(name of directory)

To build a docker file we first need to create a text document. First a text editor need to be installed using the command apt install vim

Then we create a text document using vim dockerfile code which will automatically take us to the text editor page as shown below:

Every dockerfile need a parent the first command. The left hand side commands, will be instructions while the right handside will be the name of the parent is. For example from (name of the parent) the first command FROM is the instructions followed by the parent. To exit the text editor we enter escape shift column wq

Next we build the app we created in the text editor using command docker build -t (name of app) .

Docker has revolutionized the way developers build, deploy, and manage applications. Its containerization technology enables consistent environments, resource efficiency, and rapid scalability, making it an essential tool in modern software development and DevOps practices. By reducing dependencies and simplifying deployment processes, Docker bridges the gap between development and production environments.

As organizations continue to adopt cloud-native architectures, understanding Docker and its ecosystem is no longer optional but a necessity for staying competitive in today’s tech-driven landscape. Whether you’re a seasoned developer or a beginner, embracing Docker will undoubtedly enhance your ability to deliver reliable and scalable software solutions.

Dive into Docker, experiment with its capabilities, and unlock its full potential to elevate your development workflow!

NEED TO KNOW ABOUT AZURE APP SERVICES

Emmanuel Essien — Mon, 09 Dec 2024 22:13:57 +0000

What is AZURE APP SERVICE?

Azure App Service is an HTTP-based service for hosting web applications, REST APIs, and mobile backends. It is powerful platform that simplifies application development and deployment. It is cost effective, it has an extensive pricing features and seamless integration it is an excellent choice for developers and businesses looking to modernize their applications.
Azure App Service provides the tools and infrastructure needed to succeed successfully build a simple website or a complex enterprise solution. It is a fully managed platform-as-a-service (PaaS) offered by Microsoft Azure.

Importance of Azure App Service

COST EFFECTIVE: This ensures users can pay for only the resources they use. This is beneficial for small scale businesses and startups.
SECURITY: Azure Active Directory integration and managed firewall ensures robust application security.
EASY TO USE: Deploying your app is simple with tools like visual studio, Azure CLI, or the Azure Portal.
No Need To Managed Servers, Microsoft takes care of the servers for u so u can focus on building your app.

USES OF AZURE APP SERVICE

You Can use Azure App Service with diffrent programming languages like:

.NET
Java
Python
Node.js
PHP
Ruby

This in a nutshell mean you can build your app using the language you know best.

If your app gets more users, you can; Scale Up (make your server more powerful) or Scale Out ( Add more servers to handle more traffic)
Azure App Service works with tools like GitHub and Azure DevOps. This will allow u make updates to your app automatically, so your app always stay current.
You can give your app a custom web address and protect it with SSL certificate to keep user data safe.
Azure App Service runs on servers all over the world.

How To Get Started

Sign in to Azure Portal https://portal.azure.com/#home
The next step is to type App services on the search bar as shown below.

On the App Service page we click on create then select Web App. For the purpose of this tutorial we are going to be creating a web app. (A web application is a web app is simply a program or tool you use on the internet through a web browser like Chrome, Firefox, or Safari. You don’t need to download or install it—just open a browser, go to the app's website, and start using it.)

When creating a web app we need have an active azure subscription. Then we are going to create a resource group.

We will also an empty web app. To do this we give the instance a name.

The next column is how u want to publish it, either by Code/Container. For this tutorial we choose Code.

We are going to be choosing a runtime stack. Choose our operating system either a windows or Linux since the clod provider is going to handling spinning up a VM .

Our Region will be by default chosen for us.

Another crucial step is to pay attention to our App service plan, this plan will be automatically selected for u by the cloud provider. This plan allows the cloud provider know the kind of compute resource users want to use. By Default it will be at standard.

NOTE: This is a Platform As A Service (PaaS) the cloud provider has the duty of providing all the infrastructure.
After following through this steps, u review and create.

Head Over to ChatGPT or any other Developers community to generate code for our App Service we are going to host on the web. For this tutorial, I will be creating a bitcoin app using Html, CSS and JavaScript codes.

After Successful deployment of our Web App we head over to the resource group.

On our Resource Group page we find the Search Bar on the left hand side of the screen and type Advance Tools then hit the Go button

You should get the image below.

To prove that a web app was really created there is a domain URL you will find on the overview of our web app on azure. Click on that and be redirected to show it running status and its content

We also need to understand that Web Service are part of Platform As A Service (PaaS) model. With PaaS, the cloud provider manages underlying infrastructure, including virtual machine. When you create an App Service Plan, it allocates necessary resources such as CPU and memory, which the cloud provider uses to host your web application.

The Next question is;

HOW DO WE UPLOAD CONTENT INTO OUR WEB APP SINCE IT ALREADY HAS A WEB URL AND THE RUNNING STATUS IS CONFIRMED?

Head back to ChatGpt Where we generated the code for our web service app. Then type combine all code in a single file.

Next we head back to the Tab that was opened where we went to the Advance Tool page. Tap on Debug Console, a dropdown option will show with either CMD/Powershell. Select CMD.

After Hitting CMD another page will show up we click on Site.

The we click on the wwwroot this is the root folder of our Web App Service.

Click on the pencil icon which is the second option, allows users to edit the code to our web app service.

We are going to clear this default code and paste the combined code generated from ChatGpt for our web app. Then we hit save.

We head back to our resource group for our app services, tap on the default domain to start our application.

I will also be showing where we can also push our code to other platforms that software developers use. For this purpose we are going to be using the deployment center in azure.

On the Overview Option of our resource group we search for Deployment Center on our Azure Portal. This will list a number of platforms we can push our code to.

Mastering SQlite Commands: A Beginner's Guide

Emmanuel Essien — Sat, 30 Nov 2024 01:01:41 +0000

WHAT IS SQL?

Structured Query Language (SQL) is a programming language used for managing relational databases. A Relational Database is a type of database that organizes data into tables using rows and column. The table below is an example of a relational database

WHAT IS SQLITE?

This is a light weighted, self-contained, and serverless database management system. It is widely used because it is simple, fast, and requires minimal setup.

Below are some SQL commands used on SQLITE.

SQL COMMANDS AND USAGE

INSTALL SQLITE: You can download SQLite from the link https://www.sqlite.org/download.html

After download u need to extract the files from your file manager. U will get three files extracted, as shown below.

OPEN SQLITE after the extraction we need to open the SQLITE3 from the list of extracted file

CREATE A TABLE: Use the command to set up a table to store your data while adding what you want your table to contain the ID number the format for this is INTEGER as it has to do with numbers every other wordings which are not figures will be represented as TEXT or string

CREATE TABLE (name of the table)

Below a table was created named (musicians) note that the ID is INTEGER because of the format will be stored in figures, while the other information are in TEXT, the net-worth format is in figures as such it is INTEGER.
In SQLite and other SQL environments, the semicolon ; tells the database system that the command is complete and ready to be executed.

INSERT INTO Command: This is used to add new data into a table in the database. Below shows how we used the INSERT command to the table lablled MUSICIANS we created above.

After the INSERT INTO command we the phrase VALUES. When u use the INSERT INTO command, you follow it with the VALUES keyword to provide the data for the columns

With the VALUE keyword we can add as many info into our table while using the format

SELECT *: This tells the database to get all the data form a table. The asterisk (*) is a wildcard that means all columns in the table. Example is shown below on how it is used un the table we created in the course of this article named 'Musicians'

.headers on- This makes our results more readable by showing the column names at the top of the data. This is very efficient to understand what column each data represent, especially when working with large tables.

.mode csv This command is especially useful when you want to export the result into a CSV file or view the output in a CSV style. It is widely used for exchanging data between diffrent programs like Excel or google sheets.

In this article, we’ve explored the basics of SQL (Structured Query Language), the essential language for managing and manipulating data in relational databases. From creating and modifying tables to querying and organizing data, SQL provides powerful tools to interact with databases efficiently.

Whether you are managing small-scale projects or handling large datasets, understanding SQL is a valuable skill in today’s data-driven world. Its simplicity and versatility make it the go-to solution for data analysis, application development, and much more.

By mastering SQL, you’ll be equipped to work with databases in virtually any industry and unlock the potential of your data.

Remember, practice is key. So, keep experimenting with SQL commands, try creating your own databases, and soon you’ll be comfortable using SQL to manage data like a pro.

ESSENTIAL COMMANDS - GIT/GIT HUB

Emmanuel Essien — Fri, 22 Nov 2024 16:02:52 +0000

WHAT IS GIT?

GIT is a free and open-source software for version control software for developers. This makes is easier for software developers to collaborate with each other for a coordinated work while developing a source code during software development

WHAT IS GIT HUB?

This is an internet hosting service for software development, unlike GIT that is Locally used only on a remote system. GIT HUB provides services such as; Git plus access control, bug tracking, software feature request, task management, continuous integration.

The following are some steps on how GIT commands are used on GIT BASH system, and some pictorial explanations.

WORKING WITH GIT BASH

1.GIT PUSH: This command is used to upload local repository content to a remote repository. (In Git, a local repository is a version-controlled directory on your local computer where your project files are stored, along with the metadata Git uses to track changes to these files.)

2.GIT COMMIT -M: This takes a snapshot of your repository at one point in time. The -m flag helps u add a message to the commit

3.GIT ADD: As the name implies it adds a change in the working directory to the staging area. It tells git that u want to include updates to a particular file.

4.GIT REMOTE ADD ORIGIN: This creates a new empty Git repository on your remote server.

PICTORIAL ILLUSTRATION AND HOW TO USE GIT COMMANDS

Make sure you have GIT BASH downloaded or click on the link to download https://git-scm.com/downloads

Click On download for windows for windows users, other options are available for those using other versions of PC.

After your download u open the app it is going to be looking like this

First step is to create an identity by configuring a name and email to Git BASH use the command

git config --global user.name "name"
git config --global user.email "email"

To Confirm We have successfully configure this, we use the list command: git config --list

The next step is to configure your work environment. To do this we need to create a directory. After we are done with creating the directory we enter into it using the CD command.

After done this we need to change the directory to a local GIT REPO so GIT can understand our command so we initialize the directory created earlier. We use the command git init

Then we create an empty document (text file) using touch command. We use the command touch index.html

Next we need to open the text file for editing we use VIM. Use the command** vim (name of the document)**

To be able to edit we need to be in INSERT mode and to do this we hit i on the keyboard. We head to ChatGPT and search sample index.html resume then hit enter a number of codes will be shown the after we type UPDATE RESUME WITH FULL NAME. After making all the necessary changes you copy the html and paste

To save the file we press Escape Button, Shift and Column after that command we press WQ.
The next step is to clone our repo by signing into your GITHUB account click the plus symbol on the top right, then click on new repository, after that on the next page give the repository a name option ADD A README FILE click on it then go ahead to create a REPOSITORY. After succesfully creating a REPO the next page click on the top green option that show code. We are going to copy the URL.

Next is to clone the REPO we created above, to do this we use the command git remote add origin (REPO URL)

The next step is to bring whatever text file we created to the staging area we use a command:GIT ADD INDEX.HTML to prove that the file has been added we are going to use the GIT STATUS command

Next we allow git to take a snapshot and push to git hub we use the command: git commit -m "commit message" the m there means message.

The next step is to push that file to git hub. Use the command git push origin master after that you will be asked to sign into your GIT HUB account

Head over to your repo u created on git hub to accept the pull request from git bash

The next step u click on settings on the left hand side, click on pages now select the branch u deployed it from either MASTER/ MAIN u select master hit save and then refresh the page then a link will be created to show the website

LINUX COMMANDS.

Emmanuel Essien — Thu, 14 Nov 2024 20:02:24 +0000

What Is Linux?

Linux is a computer operating system, it is used to run, study, modify, and redistribute the source code, or even sell copies of their modified code. In fact, one of the most popular platforms on the planet, Android, is powered by the linux operating system.

The Following are the steps to use some Linux commands using an Ubuntu Operating System.

Launch the VMware Workstation from your desktop.

You click on create a Virtual Mahine, Use the Custom Option

The next page is the VM Hardware Capability, so u select the one best suitable for your use. After that u hit next.

You will be directed to the Guest Operating System Installation select the option "I WILL INSTALL THE OPERATING SYSTEM LATER" then click NEXT.

The next page will be "SELECT GUEST OPERATING SYSTEM" this is the operating system that u want to be installed on the virtual machine. By default, it will be "MICROSOFT WINDOWS" for users of Windows OS. Pls do well to change to LINUX Operating System as you will get the version under to be Ubuntu then u click next.

This Shows Us the number of processors we want to assign to the virtual machine as u wish

The next page tells us the memory we want to specify in the virtual machine depending on your workload

Leave the following next settings at the default till u get the SELECT A DISK PAGE here you can customize your disk size. The recommended size for Ubuntu is 20GB you can add additional 5GB to it or as much as u want but it should not be below 20GB press next then finish.

You get to the final page then you hit finish...

You Lunch the VM.

You click the Ubuntu Start Button on the Lower Left, the browse throuh till you get to the terminal option and then you select.

WORKING WITH ROOT

To Use Root the command Is sudo su in your linux terminal or shell. This command will put you in a root environment. The SU command is used to run a function as a difrent user. It is the easiest way to switch or change to the administrative account in the current logged in session.

Navigating The File System

This command pwd tells us the file directory path you currently are in type pwd in your terminal or shell.

The Next command is ls command ls means list. This command lists directory.

By default, Ubuntu provides a list of directory as highlighted in the picture.

ls -l in your terminal or shell. This command list directory files and contents with detailed information.

r means read
w means write
x means execute
xr group

The next command is CD this command means change directory or to enter into a directory for example to change our directory to MUSIC DIRECTORY

To go back to the previous directory type Cd

Same command applies if you want to enter any directory(pictures,downloads,public etc.)

Exit command takes you back to the Ubuntu Directory then you enter the sudo su command to enter root

File And Directory Operations

touch (name of textfile) this command create a new, empty file in your terminal or shell(this is our text file). For example i created an empty file named Odogwuexchange

mkdir Command this creates a new directory example: mkdir (name of directory)

To enter into a directory we use the cd command that is cd name of directory

PLS NOTE CD TAKES TO A PREVIOUS DIRECTORY

cp command this copies files or directories, that is cp (file name) (destination)

cat Command this command display the content of a file NOTE: To type something inside the text file we use a text editor, by default VIM is ubuntu text editor. We are going to update the system being a first time user the command is apt update then you install VIM first if you have not already done so the command is: apt install vim

After the Update then u install the VIM using the code apt install vim

Then After the installation we can now use the CAT command but first we need to type a document inside the text file since we have installed VIM text editor. To do this we need to type: vim (name of the Document you created using TOUCH command)

Before typing on the text document page, you first press I which means insert then you can proceed to typing.**

SHIFT AND COLUMN COMMAND After you are done typing we have to save it. To do this we press the ESC button on your keyboard. After this we press shift and column: at the same time,you will get the column key below the page as indicated below.

wq command After this we hit W which means to save the text document hitting Q will take us out of the text document as shown below It will save and take you back to the directory

Now we can use the CAT Command to view what we have in our text document without opening the text editor. All we need to do is type cat (name of the text document) as shown below

RM command, this command will help you to delete a file by using rm (filename) in the picture I created multiple text files and I am going to list them using LS command, then I am going to use the RM command to delete

rmdir (directory) command this lets the user to remove an empty directory. Type rmdir (name of directory) in the picture below notice how i created two directories(john, glory) and I used the rmdir command to delete the directory

Less(filename) command: This allow users to view contents of a textfile one screen at a time and then Q takes you back as shown below.

To view all the commands done on the terminal you type history

This are the few Basic Linux Command.

Create A Storage Account

Emmanuel Essien — Sat, 26 Oct 2024 09:03:19 +0000

This Article Shows Steps On How To Crate A Storage Account On The Azure Portal.

The Steps Are Outlined Below:

On the resource menu, or from the Home page, select Storage accounts. The Storage accounts pane appears

On the command bar, select Create. The Create a storage account pane appears.

Select a Subscription.
Select A Storage Name Each storage account has a name. The name must be globally unique within Azure.
Select the region Select a location near to you from the dropdown list.
Select The Services You Want To Store On The Storage Account. There are a list of services that the user can choose from.
Select The Performance Determine whether you want to have premium performance for block blobs, file shares, or page blobs in your storage account
Select The Redundancy this allows the data in your Azure storage account is always replicated to ensure durability and high availability.

Then you Review and Create

Azure Virtual Machine

Emmanuel Essien — Thu, 24 Oct 2024 13:13:53 +0000

What Is Azure Virtual Machine?

One essential part of Microsoft Azure's Infrastructure as a Service (IaaS) portfolio are Azure Virtual Machines (VMs). You can run apps and services in the cloud thanks to their scalable computing resources. Here are a few salient characteristics and advantages:

On-Demand Computing: You can scale virtual machines (VMs) up or down in response to demand.
Customizable: To suit your unique requirements, select from a range of operating systems (Windows, Linux) and configurations.
Flexible Pricing: For long-term savings, pay only for the compute resources you use, with the option to reserve instances.
Azure Service Integration: VMs can be effortlessly integrated with other Azure services, including Azure Networking, Azure Storage, and Azure Active Directory.
High Availability: To guarantee that your apps are always accessible, Azure provides solutions for load balancing and redundancy.
Security Features: Network security groups, Azure Security Center, and other integrated security tools and services are offered by Azure.
Global Reach: For improved performance and compliance, install virtual machines (VMs) across several Azure regions globally.

Azure virtual machines are perfect for a number of purposes, such as enterprise application running, development and testing environments, and application hosting.

Creating and connecting to an Azure Virtual Machine involves several steps. Here’s a simplified guide to help you through the process:

Step 1: Sign in to Azure Portal
Go to the Azure Portal.
Sign in with your Microsoft account.

Step 2: Search For Vitual Machine On the Search Bar Or you go to PORTAL Menu and click to open.

Step 3: After Opening the Virtual Option, U click on Create on the left hand side of the screen

Step 4: Once you have an Active Subscription you select.
Step 5: You also Create a New Resource Group
Step 6: Create A Virtual Machine Name

Step 7: Choose A Region from the list of regions Azure Provides

Step 8: Set Ur Security Type To Be Standard

Step 9: Choose An Operating Syetem Image For your VM

Step 10: Take Note of the size. How big u want the storage of your VM to be depending on the workload

Step 11: We Need To Create Our Username and Password. By default Azure Uses password to be password123#

Step 12: Select Inbound Ports By default, access to the virtual machine is restricted to sources in the same virtual network, and traffic from Azure load balancing solutions.

Step 13: You Review And Create

Step 14: You go to resource

Step 15: You Click On Connect To Lunch the VM

Step 16: By Default, we are going to connect to the VM using RDP. To do this we need to first need to Download The RDP so we can Launch the VM

Step 17: After Downloading The RDP file then we can open and connect to launch the VM

What does Azure Service Health differ from Azure Advisor?

Emmanuel Essien — Thu, 03 Oct 2024 09:44:26 +0000

Azure Service Health is about monitoring the current state of Azure services, while Azure Advisor focuses on providing actionable recommendations to improve and optimize your use of Azure resources.

• What are some benefits of Azure Resource Manager Templates (ARM)

Infrastructure As A Code: ARM templates allow you to define your infrastructure in a JSON format, enabling consistent and repeatable deployments.
Consistency: Using templates ensures that resources are deployed in a consistent manner across different environments (development, staging, production).
Automation: This is a Simplified Deployment, templates can be used in conjunction with Azure DevOps or other CI/CD tools to automate the deployment process, reducing manual intervention and errors.
Version Control: Templates can be stored in source control systems (like Git), allowing for version tracking and collaboration among teams.
Cost Management: ARM templates can help in estimating costs based on the resources specified, aiding in budgeting and financial planning.
Security: You can incorporate Azure policies to enforce compliance and security standards directly in your ARM templates.

About Microsoft Azure intro

Emmanuel Essien — Thu, 03 Oct 2024 08:51:33 +0000

Introduction To Microsoft Azure

Microsoft Azure ( Windows Azure) is Microsoft's public cloud computing platform. It provides a broad range of cloud services, including compute, analytics, storage and networking. Users can pick and choose from these services to develop and scale new applications or run existing applications in the public cloud.

There are different concepts to this. Microsoft Azure is a cloud computing platform and service created by Microsoft, offering a wide range of cloud services including computing, analytics, storage, and networking. Users can choose and configure these services to meet their needs, whether building new applications or running existing applications in the cloud.

Key Features:

1.  Compute: Azure provides virtual machines, app services, and container services for running applications.
2.  Storage: It offers scalable storage solutions, including Blob Storage for unstructured data, Azure Files for file shares, and Cosmos DB for NoSQL databases.
3.  Networking: Services like Virtual Network, Load Balancer, and Azure CDN help in managing connectivity and performance.
4.  Analytics: Azure includes tools for big data and machine learning, such as Azure Synapse Analytics and Azure Machine Learning.
5.  Security: Features like Azure Active Directory and security center help protect data and manage identities.
6.  Integration: Azure supports integration with various development tools and frameworks, making it versatile for developers.

Where Microsoft can be used:

• Web Applications: Deploy and manage websites and web applications easily.
• Mobile Applications: Backend services for mobile apps.
• Data Backup and Recovery: Secure cloud-based data backup solutions.
• Machine Learning: Build, train, and deploy machine learning models.

Getting Started:

To begin with Azure, users can sign up for a free account, which provides access to various services for a limited time and budget. Microsoft also offers extensive documentation and learning resources to help new users familiarize themselves with the platform.

Overall, Azure enables businesses to scale resources, innovate rapidly, and reduce infrastructure costs while providing a robust set of tools for developers and IT professionals.