UI for providing input parameters to a (templated) workflow

[nicorikken]

Summary

The main reason we are considering Kubeflow is the UI which has a user-friendly way of providing run parameters. With the arrival of WorkflowTemplates in v2.5 it seems that Argo is close to a similar user-experience and I think it might be worthwhile to have a similar feature in 'plain' Argo Workflow.

Motivation

We use Argo Workflow for simulations and machine learning. Experimenting with different parameters is important part of the user-experience as they want to test different scenario's. The workflow structure itself hardly changes, but the parameters do. Also the users are data-scientists which can deal with inserting YAML, but would prefer neat fields.

Proposal

In addition to the 'insert-yaml-here' way of submitting a workflow or definitions, provide a user-friendly way to provide parameters. Something like Kubeflow is offering:

ArgoCD already provides such an interface, which takes the defaults from a YAML file. A similar approach can be used:

ArgoCD even shows an emergency icon if the default value has been changed, for clarity:

And is has the option to remove such an override easily. That might be convenient in Argo Workflow when a workflow is replayed:

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Message from the maintainers:

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[simster7]

I'll work on a PoC of this today

[nicorikken]

@simster7 thanks. I'm looking forward to this feature!