What key components and settings should be specified in YAML for configuring a standard application?

The YAML configuration of a standard application typically specifies the following key components:

• metadata: application name, version, description
• environment variables: environment variables for configuring application behavior
• resources: resource settings (CPU, memory)
• ports: ports on which the application listens for requests
• dependencies: links to external services or databases
• logging: logging parameters
• replicas (if applicable): number of application instances

Example of a simple YAML for an application:

app:
  name: myapp
  version: 1.0.0
  environment:
    - DB_HOST=localhost
    - DB_PORT=5432
  resources:
    cpu: 500m
    memory: 256Mi
  ports:
    - 8080
  logging:
    level: info