DEV Community: Cloud For Geeks

What is Amazon RDS? Explained through Comics

Cloud For Geeks — Thu, 04 Feb 2021 15:02:27 +0000

💡Amazon RDS - Explained through a comic conversational style

Here comes my new blog post where I've tried my best to explain about Amazon RDS through a comic.
Find out what it is and what are its features in the graphics

🎯 You can read more about this article and view all the graphics here - https://lnkd.in/dBwQ85Q

Let me know your thoughts in the comment section. If you liked my comic tutorial explanation of cloud service then please share and follow my blog for more such tutorials.

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You can view all the graphics here - http://cloudforgeeks.com/what-is-amazon-rds-explained-through-comics/

For more such comic tutorials follow cloudforgeeks.com

AWS Auto Scaling Group Explained – Simplified through comics

Cloud For Geeks — Tue, 05 Jan 2021 15:38:18 +0000

Imagine you want to buy a gift from an e-commerce website for someone on Christmas.

And when you visit the website, it’s DOWN.

Frustrating, isn’t it?

Since it’s a Christmas festival just like you many people are visiting the website for shopping.

This downtime results in customer frustration and loss of business for companies.

Now, the SOLUTION to this problem is…

Auto Scaling Group

Yes guys, in today’s blog we will learn about Auto Scaling concept and why it is so important.

This is a comic conversation tutorial between two guys that will explain you Auto Scaling concept easily.

To view all the graphic and complete tutorial you can view this blog here http://cloudforgeeks.com/aws-auto-scaling-group-explained-simplified-through-comics/

And for more such simple tutorials on cloud technologies, you can visit my blog cloudforgeeks.com

Load Balancer Explained – Simplified through Comics

Cloud For Geeks — Tue, 03 Nov 2020 15:56:19 +0000

Load Balancer Explained in 5 minutes!
You might have heard about Load Balancer many times.

Welcome to this Load Balancer tutorial.

Load Balancing basically means distributing network traffic across multiple servers.

This makes sure that no single server bears all the load on itself.

When the network traffic is balanced, applications run smoothly.

And like always here I’m back with another comic tutorial that will explain Load Balancer in the simplest possible manner.

Cloud providers like AWS and Azure have their own load balancing services like Elastic Load Balancer and Azure Load Balancer.

But before you study those services you need to be clear with your concept of load balancing.

I hope you guys liked this comic tutorial on Load Balancer.

You can find more such comic tutorials on EC2- Explained through Comic and S3- Explained through Comics

Let me know in the comments your thoughts on this post.

Why You Should Use Amazon S3? – Comic Guide

Cloud For Geeks — Tue, 20 Oct 2020 18:22:23 +0000

Amazon S3 Tutorial
AWS S3 is one of the most fundamental service of AWS Cloud.

It’s basically your unlimited and safest cloud storage.

Read this comic style conversation between two guys and get to know why some of the biggest companies in the world are using Amazon S3 for their business and why you should use it too.

By reading this conversation I hope you guys understood why Amazon S3 is backbone of some of the biggest companies in the world.

I hope you guys liked it, I tried my best to put it as casual and as informative as I can.

If you want to read such kind of comic tutorials on some specific cloud service then let me know in the comments.

You can read such comic and informative tutorial on Amazon EC2 here – Amazon EC2 Explained in Comic Way

Let me know in the comments if you guys found this post helpful or if there are any suggestion or questions.

You can read my other blog post here - http://cloudforgeeks.com/

AWS EC2 Explained in Comic Conversation Way

Cloud For Geeks — Fri, 16 Oct 2020 20:34:58 +0000

Here I've explained AWS EC2 which is one the most important and fundamental service of AWS Cloud in a comic conversational way.

I hope you guys liked it and found it useful.

You can view other graphics in the series here - http://cloudforgeeks.com/why-ec2-comic-answer/

Amazon EC2 (Elastic Compute Cloud) For A Complete Beginner

Cloud For Geeks — Thu, 15 Oct 2020 13:49:05 +0000

Amazon EC2 is a service that allows you businesses to run their application in AWS cloud. You can easily set up a virtual machine and perform all your computation on it. In this post, we will teach you the basics of Amazon EC2.

Introduction

EC2 is one of the oldest and fundamental services of AWS. Though everything today is serverless, you still need to know EC2.
EC2 allows you to do the following things :
- Rent virtual machines (EC2 itself)
- Storing data on virtual drives (EBS)
- Distributing load across the machines (ELB)
- Scaling the services using an auto-scaling group (ASG)

Amazon Machine Image – AMI

AMIs are the templates from which virtual servers (EC2 instance) get created.
In simple terms, AMIs are the collection of the operating system, architecture (32-bit or 64-bit) with the softwares that will be running on that operating system.
For example :
- Amazon Linux AMI is the one that comes with a Linux operating system and many packages of the Linux that one might need.
- Windows AMI comes with Windows as its operating system and software one might need.
By choosing AMI you basically decide the software part of your EC2 machine.
You can use a single AMI and launch multiple instances from it.

Instance Type

As we have seen AMI defines the software part of your EC2, Instance type defines the hardware part of your EC2 machine.
It is when you choose instance type you define the hardware configuration of your EC2 machines. Hardware configurations involve Memory, vCPUs, instance storage, network performance parameters.
This instance types are categorized on the basis of what kind of requirement you have with your EC2 machines.

Features

Instance: It provides you a virtual environment (instances) for your computing tasks.
AMIs : It comes with set of many preconfigured templates for your instances known as Amazon Machine Images, that saves you the efforts of manually installing operating system and additional softwares and configuring them.
Instance Type : You get a wide range of configurations of CPU, memory, storage and networking capacity for your instances, known as instance types. This allows you to select any power of computation as per your requirement.
Key Pairs : EC2 comes with secure login also. It provides login through key pairs where AWS stores the public key and you store the private key.
Instance Store Volume : By default it provides you storage volume to store your temporary data (data that gets deleted when you stop your instance) known as instance store volume.
Amazon EBS volume : If you want to store your data even after your instance get stopped, EC2 provides you persistent storage volume for your instance known as Amazon EBS volume.
Regions and Availability Zones : To make sure you won’t loose your data, it provides you multiple physical location for your resources,such as instances and Amazon EBS volume, known as Regions and Availability Zones.
Security Group : To prevent any unauthorized access, EC2 comes with security group. This creates a firewall that enables you to specify the protocols, ports and source IP ranges that can access your instances. Only the devices that follow this rules of your firewall can access your instances.
Elastic IP Address : You also get static IPv4 address for dynamic cloud computing known as Elastic IP address.
Tags: You can keep track of all the EC2 instances in your organization by using tags, it gives you the metadata by creating and assigning the tags to instances.
VPC : You can create your EC2 instance in a virtual networks that are logically isolated from the AWS cloud.

Conclusion

EC2 is the one service that changed the computing world. It is the most important service of AWS and very important if you are planning to get certified for AWS. This was just an overview of AWS EC2, I hope you guys like it. Let me know in the comments if you have any question, I’ll be posting more in detailed tutorials on AWS EC2.

AWS Identity Access Management – IAM Overview

Cloud For Geeks — Thu, 15 Oct 2020 13:43:23 +0000

IAM INTRODUCTION :

AWS Identity and Access Management (IAM) is a service that allows you to manage users and their access to AWS.
Your whole AWS security revolves around IAM.
IAM is a global service. It’s not bound to any specific region.
IAM allows you to control
- Identity: who can use your AWS resources (Authentication)
- Access: what resources they can use (Authorization)
When you create AWS account, that very first account is called

as Root account.
When you first start with AWS you get a root access key. Root access key provides complete access to your AWS account and you should never use them.
So you basically need to delete your root access key.
You can set up MFA (Multi-Factor Authentication) for extra security.

IAM FEATURES :

IAM provides you with centralized control of your AWS account.
It provides shared access to your AWS account.
- You can grant other people access to your AWS account.
It allows you to set Granular permissions.
- You can grant specific permission to specific users. For example, you might allow a user access to only some set of services only.
Identity Federation (including Active Directory, Facebook, LinkedIn etc)
- Users can log in by using their company credentials without having an account with AWS.
Multifactor Authentication
- This is two-factor authentication. User not only need to provide password or access key but also code from physical devices such as android or ios smartphone.
Support PCI DSS compliance.
- IAM supports the processing, storage, and transmission of credit card data
Provide application running on EC2 access to AWS resources.
- You can have your application running on EC2 secure access to AWS resource.
IAM integrates with almost every AWS service.
- Since it’s a fundamental or core service that provides security, IAM integrates with almost all AWS services.
Free to use
- IAM is a completely free service to use.

IAM COMPONENTS :

Users

User is an AWS identity.
User is basically a physical person.
This physical person will get an account in IAM.
New users have no permission when first created.

Group

Group basically means a set of IAM users.
Groups are basically defined by their function for example Developers, Admin etc.
Instead of assigning the same permission to every other user individually, you can assign that permission to group and add all the users in that group.
All the users in this group will inherit the permission of the group.

Roles

Role is an IAM identity that has specific permissions.
Role is similar to User.
But it is not associated with a specific person, a role is assumed by anyone who needs it.
Role doesn’t have standard long term credentials such as password, it works on temporary security credentials for a session.
Roles can be assigned to :
- An IAM user in the same account as role in.
- An IAM user in a different account than the role.
- An AWS service such as EC2.
Policies
Policies are JSON documents.
They define what User, Group and Roles can do or cannot do.
Permissions are governed by policies.
AWS provides you with many built-in policies that already have permissions according to use cases. This is the AWS managed policies.
You can also create your own policy as well.

IAM FEDERATION

IAM Federation is a feature which can be used by big enterprises.
Generally, big enterprises have their own repository of users. Using IAM Federation such enterprises can integrate their own repository of users with IAM.
This way users of such enterprises can log in into AWS using their company credentials.
Identity Federation uses the SAML standard

read rest of the tutorial here http://cloudforgeeks.com/aws-identity-access-management-iam-overview/
AWS Identity Access Management (IAM) explained. This article covers IAM fundamentals. Learn AWS IAM and use it in your own AWS account.