[AWS] Opsworks

OpsWorks is a configuration management service, which automates your system’s configuration using code.

  • Operating System configuration
  • Application configuration
  • Package/Software installation configuration

AWS OpsWorks

OpsWorks provides three solutions.

  • OpsWorks Stacks
    • Define, group, provision, deploy, and operate your applications in AWS by using Chef in local mode.
  • OpsWorks for Chef Automate
    • Create Chef servers that include Chef Automate premium features, and use the Chef DK or any Chef tooling to manage them.
    • Use this option if you already familiar with Chef.
  • OpsWorks for Puppet Enterprise
    • Create Puppet servers that include Puppet Enterprise features.
    • Inspect, deliver, update, monitor, and secure your infrastructure.

Stacks

OpsWorks models your application as a stack of resources with layers, and it requires IAM permissions to interact with other AWS resources.

  • CloudFormation (low-level) << OpsWorks << Elastic Beanstalk (high-level)
  • A stack is made up of multiple layers
    • Each layer is configured using Chef recipes.

Supported Platforms

  • Chef 12 Stack: Linux and Windows
  • Chef 11 Stack: Linux only

OpsWorks Components

Stacks

  • A unit of managed infrastructure – a container for AWS resources

Layers

  • Layers define tiers within a stack; e.g. application layer, database layer.
  • A layer is a blueprint for a set of EC2 instances. It specifies the instance’s settings, associated resources, installed packages, profiles, and security groups.
  • Layers depend on Chef recipes to handle tasks.

Instances

  • EC2 instances are associated with a layer.
  • 24/7 instances are started manually and run until stopped.
  • Time-based instances are based on a specified schedule.
  • Load-based instances are based on specified load metrics.

Apps

  • Applications are deployed to layers from the source code repository or S3.
  • The deployment happens on a layer using recipes.

Recipes (Cookbooks)

  • Actual deployment instructions and come from a repository.
  • Setup -> Configure -> Deploy/Undeploy -> Shutdown

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