Introduction to Amazon EC2

Amazon Elastic Compute Cloud (Amazon EC2) may be a web service that gives modifiable, secure cloud computing capacity. it's designed to form it easier for developers to use cloud computing at the size of the online .

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Amazon EC2 is AWS's primary service for providing computing to customers. The instance type defines the virtual hardware that the instance supports. The available instance types vary in vCPU, memory storage, and network performance to deal with almost any workload. An AMI (Amazon machine Image) defines the initial state of the instance software, both the OS and therefore the applications .

There are four AMI sources: AWS Publishing, AWS Market Partner Published AMI with pre-installed software packages , Customer-generated AMIs from existing Amazon EC2 instances, and AMIs uploaded from virtual servers. Instances are often addressed by public DNS name , public IP address, or elastic IP address . To access a Linux instance you'll use the key-pairs created within the AWS console and hook up with the instance through SSH. To access a newly created instance of Windows, you want to also use the key-pairs to decrypt the randomly created local administrator password. Network traffic inside and out of doors an instance are often controlled by a virtual firewall called a security group .

A security group allows rules that block traffic supported address, port, protocol, and source / destination address. Bootstrapping allows you to run a script to initialize your instance with OS applications and configurations . This feature allows instances to be configured on startup. Once an instance is started, you'll change its instance type or, for Amazon VPC instances, the safety groups with which it's associated. The three pricing options for instances are On-Demand, Instance Reserved and Spot . On-Demand has the very best cost per hour, which doesn't require an advance commitment and provides you full control over the duration of the instance.

The Reserved Instances require commitment and supply a reduced overall cost over the duration of the reservation. Spot instances are idle computing capacity that AWS makes available supported customer offer prices . the value savings per hour are often significant, but instances are often closed when the asking price exceeds the customer's current offer . Spot instances are created with block storage which is included within the cost per hour of the instance. the quantity and sort of storage available varies by instance type. this sort of instance should only be used for temporary data or in architectures that provide redundancy, like Hadoop HDFS, because stopping the installation saves the info . Lastly, it should be mentioned that Amazo ... https://www.youtube.com/watch?v=9-q-g9gMyLU