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Runtime variable support in experiments

Runtime variables provide flexibility in chaos experiments by allowing you to customize experiment parameters at execution time rather than hardcoding them during creation.

New Chaos Studio Feature

Runtime input variables are part of the enhanced New Chaos Studio experience. If you're an existing customer and want access to new features, contact your Harness support representative. For more details, see New Chaos Studio Features.

Create and Run Experiments​

You can execute chaos experiments using either static values or dynamic runtime values.

  • Static variables: Define them directly in the experiment and use them without any modification.
  • Runtime variables: Specify them using <+input>, allowing customization at runtime or through saved input sets.

Use Runtime Variables​

To set up an experiment, specify details such as the name, environment, infrastructure, and fault name. In the Target Application and Tune Fault modals, you can choose between Fixed value and Runtime Input. Once you choose the input type, Save the changes.

runtime variables

runtime variables

tip
  • If you don't provide values for certain fields (which are not mandatory), the experiment executes with default values.
  • Variables specified as runtime inputs appear as editable fields in the UI, whereas static fields appear as display-only.