AWS Classroom Series – 09/May/2021

AWS EC2 instances

• Refer Here
• Instance Families
  • T family: Cheap, moderate baseline performance with the ability to burst to higher performance for short periods of time
  • M family: General purpose with balance ratio of CPU and memory
  • C family: Compute optimized, high CPU performance
  • R family: Memory Optimized with more memory that CPU power
  • D family: Storage optimized, offering huge HDD capacity
  • I family: Storage Optimized, offering huge SSD capacity
  • X family: Extensive capacity with focus on memory up to 1952 GB memory and 128 virtual cores
  • F family: Accelerated computing based of FPGA (Field programmable gate arrays)
  • P,G and CG family: Accelerated computing based on GPUs (graphics processing units)
• In November 2017 AWS announced a new generation of virtualization called as Nitro.
• Nitro combines KVM-based hypervisor with customized hardware (ASICs) aiming to provide a performance that is far better than bare metal machines
• Refer Here for official page on AWS Nitro

Running a Workload in AWS EC2 instance

• For this lab environment lets assume the workload which we need to run is spring-pet clinic
• To run this application, we need java to be installed (java 11)
• Then we need to download the application package Refer Here and run the application using java -jar spring-petclinic-2.4.2.jar
• This application will be using 8080 port for communication
• Approach 1:
  • Create a ec2 instance and execute all of the steps manually

  sudo apt update
  sudo apt install openjdk-11-jdk -y
   wget https://referenceapplicationskhaja.s3-us-west-2.amazonaws.com/spring-petclinic-2.4.2.jar
  java -jar spring-petclinic-2.4.2.jar
  

  • Now navigate to http://<publicip>:8080
• Approach 2: Installing the application automatically during creation
  • Select ubuntu 18 and t2.micro and in the Configure Instance Details page
  • In the Advanced detail section execute the following shell script

  #!/bin/bash
  apt update
  apt install openjdk-11-jdk -y
  cd /home/ubuntu
  wget https://referenceapplicationskhaja.s3-us-west-2.amazonaws.com/spring-petclinic-2.4.2.jar
  java -jar /home/ubuntu/spring-petclinic-2.4.2.jar &
  

  
• In Approach 2 the application is installed while ec2 instance is created.
• If we want to have multiple instances created with the same application, it would be good if we can launch some AMI and directly get this application.
• So we need to understand how to create an AMI with custom applications in it.

Note:

• Linux Sessions Refer Here
• Cloud Essentials Refer Here
• Install AWS CLI Refer Here