key-only-artifacts.md

Key-Only Artifacts

v3.0 and after

A key-only artifact is an input or output artifact where you only specific the key, omitting the bucket, secrets etc. When these are omitted, the bucket/secrets from the configured artifact repository is used.

This allows you to move the configuration of the artifact repository out of the workflow specification.

This is closely related to artifact repository ref. You'll want to use them together for maximum benefit.

This should probably be your default if you're using v3.0:

• Reduces the size of workflows (improved performance).
• User owned artifact repository set-up configuration (simplified management).
• Decouples the artifact location configuration from the workflow. Allowing you to re-configure the artifact repository without changing your workflows or templates.

Example:

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: key-only-artifacts-
spec:
  entrypoint: main
  templates:
    - name: main
      dag:
        tasks:
          - name: generate
            template: generate
          - name: consume
            template: consume
            dependencies:
              - generate
    - name: generate
      container:
        image: argoproj/argosay:v2
        args: [ echo, hello, /mnt/file ]
      outputs:
        artifacts:
          - name: file
            path: /mnt/file
            s3:
              key: my-file
    - name: consume
      container:
        image: argoproj/argosay:v2
        args: [cat, /tmp/file]
      inputs:
        artifacts:
          - name: file
            path: /tmp/file
            s3:
              key: my-file

!!! WARNING The location data is not longer stored in /status/nodes. Any tooling that relies on this will need to be updated.