Deployment and Provisioning

Question 1

OpsWorks

Answer 1

automate deployments
monitor deployments
maintain deployments
useful tool for longer application lifecycles.

Question 2

Chef

Answer 2

open source tool that automates infrastructure by turning it in to code.

Question 3

Stacks

Answer 3

represent a set of resources that we want to manage as a group – EC2 instance, EBS volumes, load balancers
we could build a stack for a development, staging, or production environment.

Question 4

Layers

Answer 4

Used to represent and configure components of a stack
Can use built-in layers and customize those or create completely custom layers.
recipes are added to layers.

Question 5

Instances

Answer 5

• • must be associated with at least one layer
• • could build a stack for a development, staging, or production environment
• • can run as 24/7
• • load-based or time-based.

Question 6

Apps

Answer 6

are deployed to the application layer through a source code repository like GIT, SVN, or even S3.
we can deploy an app against a layer and have OpsWorks execute recipes to prepare instances for the application

Question 7

Recipes

Answer 7

• • create using Ruby language and based off of the Chef deployment software
• • custom recipes can customize different layers in an application
• • run at certain pre-defined events within a stack
  • • Setup – occurs on a new instance after first boot
  • • Configure - occurs on all stack instances when they enter or leave the online state
  • • Deploy - occurs when we deploy an app
  • • Undeploy - happens when we delete an app from a set of application instances
  • • Shutdown - happened when we shut down an instance(but before it is actually stopped).

Question 8

CloudFormation

Answer 8

• • allows you to create and provision resources in a reusable template fashion
• • turns your resources into stacks that work as units
• • allows you to source control your infrastructure
• • JSON compatible template

Question 9

Anatomy of a cloudFormation template

Answer 9

• -AWSTempalteForamtVersion
• -Description
• -Metadata
• -Parameters
• -Mappings
• -Conditions
• -Resources(required)
• -Outputs