Artifact Repository Ref

v2.9 and after

You can reduce duplication in your templates by configuring repositories that can be accessed by any workflow. This can also remove sensitive information from your templates.

Create a suitable config map in either (a) your workflows namespace or (b) in the managed namespace:

apiVersion: v1
kind: ConfigMap
metadata:
  # If you want to use this config map by default, name it "artifact-repositories". Otherwise, you can provide a reference to a
  # different config map in `artifactRepositoryRef.configMap`.
  name: my-artifact-repository
  annotations:
    # v3.0 and after - if you want to use a specific key, put that key into this annotation.
    workflows.argoproj.io/default-artifact-repository: default-v1-s3-artifact-repository
data:
  default-v1-s3-artifact-repository: |
    s3:
      bucket: my-bucket
      endpoint: minio:9000
      insecure: true
      accessKeySecret:
        name: my-minio-cred
        key: accesskey
      secretKeySecret:
        name: my-minio-cred
        key: secretkey
  v2-s3-artifact-repository: |
    s3:
      ...

You can override the artifact repository for a workflow as follows:

spec:
  artifactRepositoryRef:
    configMap: my-artifact-repository # default is "artifact-repositories"
    key: v2-s3-artifact-repository # default can be set by the `workflows.argoproj.io/default-artifact-repository` annotation in config map.

This feature gives maximum benefit when used with key-only artifacts.

Reference.

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