passing-a-stage.yaml

# this is a senza.yaml describing a Location Service Demo (LSD) backend server.
# use it as an example for passing a STAGE environment to your application (see
# NOTEs below). to pass the stage to your application from your deployment, use
# senza create <application-yaml> <stack-name> <version> Stage=<MYSTAGE>, where
# <MYSTAGE> should be something like LIVE, STAGING, and so on.
# example: senza create lsd.yaml 21 0.21 Stage=STAGING.

# NOTE the Stage: section passing a stage parameter to the Taupage AMI.

SenzaInfo:
  StackName: lsd
  Parameters:
    - ImageVersion:
        Description: "Docker image version of lsd."
    - Stage:
        Description: "Stage of the application (live, staging, ...)"

# NOTE the environment: section under TaupageConfig: which passes the
# <Stage> argument of senza (create) to Taupage which turns it into a
# runtime UNIX/LINUX environment variable which can be retrieved from
# within your application, e.g. in scala as sys.env.get("STAGE").

SenzaComponents:

  # this basic configuration is required for the other components
  - Configuration:
      Type: Senza::StupsAutoConfiguration # auto-detect network setup

  # will create a launch configuration and auto scaling group with scaling triggers
  - AppServer:
      Type: Senza::TaupageAutoScalingGroup
      Minimum: 0
      Maximum: 1
      InstanceType: t2.micro
      SecurityGroups:
        - app-lsd
      IamRoles:
        - app-lsd
      ElasticLoadBalancer: AppLoadBalancer
      AssociatePublicIpAddress: false # change for standalone deployment in default VPC
      TaupageConfig:
        application_version: "{{Arguments.ImageVersion}}"
        runtime: Docker
        # NOTE change "/mentoring/lsd" to your team/application path
        source: "pierone.stups.zalan.do/mentoring/lsd:{{Arguments.ImageVersion}}"
        health_check_path: /
        ports:
          8080: 9000
        # NOTE replace <my_mint_bucket> with your real mint bucket name
        mint_bucket: "<my_mint_bucket>"
        enhanced_cloudwatch_metrics: true
        # NOTE UNIX/LINUX environment vars created from senza create command line:
        environment:
          STAGE: "{{Arguments.Stage}}"

  # creates an ELB entry and Route53 domains to this ELB
  - AppLoadBalancer:
      Type: Senza::WeightedDnsElasticLoadBalancer
      HTTPPort: 8080
      HealthCheckPath: /
      SecurityGroups:
        - app-lsd-lb
      Scheme: internet-facing