CICD: CodeCommit, CodePipeline, CodeDeploy, CodeBuild, CloudFormation

Question 1

AWS CodePipeline Service

Answer 1

• continuous delivery service that helps you automate your release pipelines for application and infrastructure
• comprises a series of stages (build, test, deploy)
• you can add an approval action to stage in a pipeline that points to where you want the pipeline to stop so someone can approve; with the required IAM permissions.
• you can configure this action to publish to an SNS topic
• must have at least 2 stages

Question 2

CodeDeploy: In-Place Deployment

Answer 2

• the application on each instance in the deploy group is stopped
• the latest application version is installed
• the new version of the application is started and validated

Question 3

CodeDeploy: Deployment Blue/Green

Answer 3

Blue/Green deployment

• EC2 instances in the original environment are replaced by a different set of instances
• Lambda: traffic is shifted from current serverless environment to one with the updated lambda code

Question 4

CodeDeploy: Deployment Method

Answer 4

• In-place deployment

- Blue/Green deployment

Question 5

AWS CodeBuild Service

Answer 5

• Continuous Integration
• compiles source code
• runs test cases
• produces software packages that are ready to deploy
• build specification YML lets you choose the commands to run at each phase of the build process.
• cannot trigger a lambda function directly

Question 6

CodeCommit: Monitoring

Answer 6

• AWS IAM to control and monitor who can access your data, how, when and where.
• Monitor repositories with CloudTrail and CloudWatch
• Use SNS to receive notifications for events impacting your repositories

Question 7

CodeCommit: Limits

Answer 7

• 1,000 repository limits
• a single blob cannot be more that 2GB
• total size of files in a single commit have a 20MB max
• individual files should not exceed 6MB

Question 8

AWS CodeDeploy Service

Answer 8

• Fully Managed deployment service

- automates software deployments to EC2, Fargate, Lambda and on-premises servers

Question 9

CodeDeploy: Deployment Configuration

Answer 9

• a set of deployment rules and deployment success and failure conditions

Question 10

CodeDeploy: Deployment Group

Answer 10

• individually tagged instances in EC2 Auto Scaling Group.

Question 11

CodeDeploy: Deployment Lifecycle Events

Answer 11

1. ApplicationStop
2. DownloadBundle
3. BeforeInstall
4. Install
5. AfterInstall
6. ApplicationStart
7. ValidateService

Question 12

CodePipeline: Revision

Answer 12

A change made to the source location defined fo your pipeline

It can include source code, build output, configuration or data.

Question 13

CodePipeline: Stage

Answer 13

A group of one or more actions.

A pipeline can have two or more stages.

Question 14

CodePipeline: Action

Answer 14

A task perform on a revision.

Pipeline actions occur in a specified order.

6 Types of actions:

• Source
• Build
• Test
• Deploy
• Approval
• Invoke

Question 15

CodePipeline: Limits

Answer 15

• Max number of total pipelines per region is 300

- Stage: min 2 max 10

Question 16

CodeBuild: Project

Answer 16

Define how CodeBuild will run a build.

• Where to get source code
• Which build environment to use
• build commands to run
• where to sore the build output

Question 17

CodeBuild: Environment

Answer 17

A combination of OS, programming language, runtime and tools used by to build

Question 18

CodeBuild: Build Specification

Answer 18

YAML file that lets you choose the commands to run at each phase of the build and other settings.

Question 19

CodeBuild: Compute Capacity

Answer 19

• build.general1.small
  3GB RAM, 2vCPU
• build.general1.medium
  7GB RAM, 4vCPU
• build.general1.large
  15GB RAM, 8 vCPU

Question 20

AWS CloudFormation Service

Answer 20

• Model infrastructure in a template file using JSON or YAML.
• Automate the provisioning and updating of Infrastructure in a safe and controlled manager
• Provisioning Mechanism

Question 21

Which section in CloudFormation template does not allow for condition?

Answer 21

• “Parameters”: Conditions cannot be used within the Parameters section.

Conditions are allowed with:

• Outputs
• Resources
• Condidtions

Question 22

CloudFormation: Multiple Exported Values

Answer 22

• Exported Output values in CloudFormation must have unique names within a single region

Question 23

CloudFormation: !FindInMap

Answer 23

!FindInMap [ MapName, TopLevelKey, SecondLevelKey ]

Question 24

CodeBuild: Timeouts

Answer 24

By setting the timeout configuration the build process will automatically terminate post the expiry of the configured timeout.

Default is 60 minutes.

Question 25

AWS::Serverless::Function

Answer 25

This resource creates a lambda function

Question 26

AWS::Serverless::UserPool

Answer 26

Applies to the Congnito service which is used for authentication

Question 27

AWS::Serverless::API

Answer 27

Describes an API Gateway resource

Question 28

AWS::Serverless::SimpleTable

Answer 28

Syntax for describing how to create a DynamoDB table