node-selector.yaml

# This example demonstrates a workflow with a step using node selectors.
# In this case, it requires that the 'print-arch' template, run on a
# node with architecture 'amd64'. This can be overriden via argo CLI, 
# e.g. argo submit node-selector.yaml -p arch=somethingelse
# Node selectors can also be set at the workflow level, meaning all pods
# of the workflow will be scheduled using the selector.
apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: node-selector-
spec:
  entrypoint: print-arch
  arguments:
    parameters:
    - name: arch
      value: amd64

  templates:
  - name: print-arch
    inputs:
      parameters:
      - name: arch
    nodeSelector:
      beta.kubernetes.io/arch: "{{inputs.parameters.arch}}"
    container:
      image: alpine:latest
      command: [sh, -c]
      args: ["uname -a"]