Argo artifacts gives error "http: server gave HTTP response to HTTPS client" - http

Question

I was setting up Argo in my k8s cluster in Argo namespace.
I also Installed MinIO as an Artifact repository (https://github.com/argoproj/argo-workflows/blob/master/docs/configure-artifact-repository.md).
I am configuring a workflow which tries to access that Non-Default Artifact Repository as:
apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
generateName: artifact-passing-
spec:
entrypoint: artifact-example
templates:
- name: artifact-example
steps:
- - name: generate-artifact
template: whalesay
- - name: consume-artifact
template: print-message
arguments:
artifacts:
# bind message to the hello-art artifact
# generated by the generate-artifact step
- name: message
from: "{{steps.generate-artifact.outputs.artifacts.hello-art}}"
- name: whalesay
container:
image: docker/whalesay:latest
command: [sh, -c]
args: ["cowsay hello world | tee /tmp/hello_world.txt"]
outputs:
artifacts:
# generate hello-art artifact from /tmp/hello_world.txt
# artifacts can be directories as well as files
- name: hello-art
path: /tmp/hello_world.txt
s3:
endpoint: argo-artifacts-minio.argo:9000
bucket: my-bucket
key: /my-output-artifact.tgz
accessKeySecret:
name: argo-artifacts-minio
key: accesskey
secretKeySecret:
name: argo-artifacts-minio
key: secretkey
- name: print-message
inputs:
artifacts:
# unpack the message input artifact
# and put it at /tmp/message
- name: message
path: /tmp/message
s3:
endpoint: argo-artifacts-minio.argo:9000
bucket: my-bucket
accessKeySecret:
name: argo-artifacts-minio
key: accesskey
secretKeySecret:
name: argo-artifacts-minio
key: secretkey
container:
image: alpine:latest
command: [sh, -c]
args: ["cat /tmp/message"]
I created the workflow in argo namespace by:
argo submit --watch artifact-passing-nondefault-new.yaml -n argo
But the workflow fails with an error:
STEP PODNAME DURATION MESSAGE
✖ artifact-passing-z9g64 child 'artifact-passing-z9g64-150231068' failed
└---⚠ generate-artifact artifact-passing-z9g64-150231068 12s failed to save outputs: Get https://argo-artifacts-minio.argo:9000/my-bucket/?location=: http: server gave HTTP response to HTTPS client
Can someone help me to solve this error?

Answer 1

Since the minio setup runs without TLS configured, the workflow should specify that it should connect to an insecure artifact repository.
Including a field insecure: true in the s3 definition section of the workflow solves the issue.
s3:
endpoint: argo-artifacts-minio.argo:9000
insecure: true
bucket: my-bucket
key: /my-output-artifact.tgz
accessKeySecret:
name: argo-artifacts-minio
key: accesskey
secretKeySecret:
name: argo-artifacts-minio
key: secretkey