The following is a full reference for all the fields that can be set for a worker service in porter.yaml.
  • autoscaling - the autoscaling configuration for the service.
    • enabled - whether autoscaling is enabled or not.
    • minInstances - the minimum number of instances to run.
    • maxInstances - the maximum number of instances to run.
    • cpuThresholdPercent - the CPU threshold percentage to trigger autoscaling at.
    • memoryThresholdPercent - the memory threshold percentage to trigger autoscaling at.

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autoscaling

object - optional All fields are optional. 
autoscaling:
  enabled: true
  minInstances: 1
  maxInstances: 10
  cpuThresholdPercent: 80
  memoryThresholdPercent: 80