CMSC389L

Week 15

Infrastructure as Code

Friday, December 8, 2017

CloudFormation + Thumbnailer Demo
CMSC389L Recap
Final Evaluation Form

Today

CloudFormation

Cloud Infrastructure

Cloud systems are complex and with numerous components and relationships

Cloud Infrastructure

How do you manage these components over time?

https://www.slideshare.net/AmazonWebServices/deep-dive-aws-cloudformation

Cloud Infrastructure

How do you manage these components over time?

AWS Management Console?

Error-prone
Not repeatable
Not easily auditable
Time consuming + manual!

https://www.slideshare.net/AmazonWebServices/deep-dive-aws-cloudformation

Cloud Infrastructure

How do you manage these components over time?

AWS CLI? Boto3 scripts?

How to handle API failures?
Delete and re-create just to update the environment?
Roll backs?
Hard to track changes over time (Version control)

https://www.slideshare.net/AmazonWebServices/deep-dive-aws-cloudformation

Cloud Infrastructure

How do you manage these components over time?

Need a smart configuration tool

Declarative
- Specify the state you want to achieve, let the tool figure out "how"
Can handle roll-backs
Abstracts away the AWS API
Reproducible
- staging => production?
Versionable (for example, with Git)

CloudFormation

Templates: YAML or JSON configuration files
Stacks: Groups of resources created by a template

AWSTemplateFormatVersion: "2010-09-09"
Description: A sample template
Resources:
  MyEC2Instance:
    Type: "AWS::EC2::Instance"
    Properties: 
      ImageId: "ami-2f726546"
      InstanceType: t1.micro
      KeyName: testkey
      BlockDeviceMappings:
        -
          DeviceName: /dev/sdm
          Ebs:
            VolumeType: io1
            Iops: 200
            DeleteOnTermination: false
            VolumeSize: 20

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "A sample template",
  "Resources": {
    "MyEC2Instance": {
      "Type": "AWS::EC2::Instance",
      "Properties": {
        "ImageId": "ami-2f726546",
        "InstanceType": "t1.micro",
        "KeyName": "testkey",
        "BlockDeviceMappings": [
          {
            "DeviceName": "/dev/sdm",
            "Ebs": {
              "VolumeType": "io1",
              "Iops": 200,
              "DeleteOnTermination": false,
              "VolumeSize": 20
            }
          }
        ]
      }
    }
  }
}

CloudFormation

Real World Deployment

Goal: automate everything, beginning-to-end
- Continuous Integration: Test every commit
- Continuous Deployment: Push code live as quickly as possible

CloudFormation is critical here, so that:
- Infra changes occur in parallel with application changes
- Infra changes occur automatically, with no human interaction
- Infra changes are reproducible on staging vs. production

Thumbnailer with CloudFormation!

CMSC389L Recap!

This Semester

Networking

Compute

Data

ALBs
API Gateway

EC2
Lambda
ECS + Docker

S3
DynamoDB
Elasticsearch
CloudFront
SQS

Infrastructure Management

CloudFormation
Auto Scaling

Remember This?

What did we not cover?

Networking

Compute

Data

Route53 (DNS)
Shield (DDoS)
...

Elastic Beanstalk
Elastic Map Reduce
Athena
...

Aurora
RDS
Kinesis
...

Infrastructure Management

OpsWorks
VPCs

Resources

Lots of great resources:

A Cloud Guru
- https://acloud.guru/
Open Guide to AWS
- https://github.com/open-guides/og-aws
AWS Whitepapers
- https://aws.amazon.com/whitepapers/
Hackathons, especially when AWS employees attend

Final Evaluation Form

ter.ps/389LF17

Closing Notes

Final Project Deadlines:
- Friday, 12/15: Code
- Saturday, 12/16: Video Demo
- By 12/19: In-person Demo

Sign up on Piazza for a presentation spot!