Section5 ec2

• Setting up a budget and an alarm for that budget

  1. Go into the billing console

  2. Click on Billing and Cost Management

  3. Activate IAM access to billing information

  4. View cost information

  5. Look at bills and charges by service

  6. Check the free tier usage

  7. Create a budget
• IAM user


  An Identity and Access Management (IAM) user is an entity that you create in AWS to represent the person or application that interacts with AWS resources
• Even with administrative access, an IAM user cannot access billing data by default
• Accessing billing data as an IAM user

  1. Go to the root account

  2. Go to Accounts

  3. Activate IAM access to billing information
• Billing console


  The AWS Billing and Cost Management console, where you can view and manage your AWS costs and billing information
• The billing console shows information such as month-to-date cost, total forecasted cost, and last month's total cost
• Analyzing billing details


  1. Go to the Bills section

  2. Select the month of interest

  3. Scroll down to see the charges by service
• Free tier


  AWS offers a free tier that allows customers to try out certain AWS services for free for a limited time
• Setting up a budget

  1. Go to the Budgets section

  2. Create a budget using a template

  3. Set the budget amount and email notifications
• Setting up a zero spend budget and a monthly cost budget can help avoid unexpected costs
• Amazon EC2


  Elastic Compute Cloud, one of the most popular AWS offerings, allows you to rent virtual machines (EC2 instances)
• Using EC2


  1. Choose operating system (Linux, Windows, Mac OS)

  2. Choose compute power (CPU, RAM, storage)

  3. Choose network (speed, public IP, security group)

  4. Configure with EC2 User Data script
• EC2 instance


  A virtual server running in the Amazon cloud
• Launching an EC2 instance

  1. Choose name and tags

  2. Choose operating system (Amazon Linux 2)

  3. Choose instance type (t2.micro)

  4. Create key pair (EC2 Tutorial)

  5. Configure network settings

  6. Configure storage

  7. Add user data script to launch web server
• User data script is executed only on the first launch of the EC2 instance
• Instance is stopped


  Public IP address may change when instance is restarted
• Private IP address remains the same when instance is stopped and restarted
• Stopping an instance stops billing, but keeps the instance state
• Terminating an instance deletes the instance and associated resources
• EC2 Instance Types


  Different types of EC2 instances that can be used for different use cases, with different types of optimization
• Types of EC2 instances


  • General purpose
  • Compute optimized
  • Memory optimized
  • Storage optimized
• Instance Class


  The first part of the EC2 instance naming convention, e.g. M for general purpose
• Instance Generation


  The second part of the EC2 instance naming convention, e.g. 5 for the 5th generation
• Instance Size


  The third part of the EC2 instance naming convention, e.g. 2XLarge for the size
• General purpose instances


  • Good balance between compute, memory, networking
  • Suitable for diverse workloads like web servers or code repositories
• General purpose instances


  • T2 micro (free tier)
• Compute optimized instances


  • Optimized for compute intensive tasks like batch processing, media transcoding, high-performance web servers, HPC, machine learning, gaming servers
• Compute optimized instance naming

  C5, C6, etc.
• Memory optimized instances


  • High performance for workloads that process large datasets in memory, like databases, distributed caches, BI applications, real-time big data processing
• Memory optimized instance naming

  R series, X1 high memory, Z1
• Storage optimized instances


  • Optimized for high-frequency online transactional processing, relational and NoSQL databases, caching for in-memory databases, data warehousing, distributed file systems
• Storage optimized instance naming

  I, G, H1 series
• t2.micro is part of the AWS free tier, providing up to 750 hours per month
• Website to compare EC2 instance types


  • instancetype.info
• Security groups


  Firewall around EC2 instances that control how traffic is allowed into and out of the instances
• Security groups


  • Only contain allow rules
  • Can reference IP addresses or other security groups
• How security groups work

  1. Create security group around EC2 instance

  2. Security group has inbound and outbound rules

  3. Inbound rules control traffic from outside to instance

  4. Outbound rules control traffic from instance to outside
• Security groups are locked down to region/VPC combination
• Security groups live outside the EC2 instance
• If application is not accessible (timeout)

  It is a security group issue