Autoscaler Configuration

The Autoscaler can be configured through environment variables, defined in the autoscaler deployment YAML or in the Dockerfile for the autoscaler.

How to provide configuration

Example:

ENV locustFilePath=/locustfile.py evaluationConfigFilePath=/evaluation_config.yaml

This configuration can be baked into the Docker image to provide a standard configuration for the autoscaler.

Example:

  config: 
    - name: locustHost
      value: "http://fibonacci:5000"
    - name: locustUsers
      value: "10"

This configuration can be modified at deploy time rather than baked in at build time, allowing more fine tuned customisation.

  config: 
    - name: locustHost
      value: "http://fibonacci:5000"

Required - no default.
This defines the host of the service to load test for latency, required.

  config: 
    - name: locustRunTime
      value: "50"

Default: 20 This defines how long the load tester will run to gather latency statistics.

  config: 
    - name: locustFilePath
      value: "/locustfiles/locustfile.py"

Default: /locustfile.py Defines where the Locust Python file is that should be run for the load test.

  config: 
    - name: locustUsers
      value: "15"

Required - no default.
The number of users for Locust to create for load testing

  config: 
    - name: locustHatchRate
      value: "5"

Required - no default.
The rate at which users should be created by Locust.

  config: 
    - name: evaluationConfigFilePath
      value: "/config/eval_config.yaml"

Default: /evaluation_config.yaml" The file path of the evaluation configuration YAML.

  config: 
    - name: decayInfoFilePath
      value: "/decay/decay.json"

Default: /decay_info.json The file path to put the decay information, has to be readable and writeable.