Argo Workflow 抛出“/bin/sh：算术语法错误”

Question

我是 Argo Workflows 的新手。为了演示目的，我写下了一个示例工作流程。下面是附加的工作流 YAML，我在最后一步中遇到了这个问题。最后一步 sayHello 出错，退出状态为 2，日志显示错误为：

'/bin/sh: arithmetic syntax error'

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  name: program-1-prints
spec:
  entrypoint: main
  templates:
    - name: main
      steps:
        - - name: addTwoNos
            template: addTwoNosTemplate
            arguments:
              parameters:
                - name: a
                  value: '2'
                - name: b
                  value: '4'
        - - name: addTenToResult
            template: addTwoNosTemplate
            arguments:
              parameters:
                - name: a
                  value: '{{steps.addTwoNos.outputs.result}}'
                - name: b
                  value: '10'
        - - name: sayHello
            template: sayHello
            when: '{{steps.addTenToResult.outputs.result}} > 10'
    - name: addTwoNosTemplate
      inputs:
        parameters:
          - name: a
          - name: b
      container:
        image: 'alpine:latest'
        command:
          - sh
          - '-c'
        args:
          - 'echo $(( {{inputs.parameters.a}} + {{inputs.parameters.b}} ))'
    - name: sayHello
      inputs:
        parameters:
          - name: result
            value: '{{steps.addTenToResult.outputs.result}}'
      container:
        image: 'alpine:latest'
        command:
          - sh
          - '-c'
        args:
          - 'echo $(( {{inputs.parameters.result}} ))'

Answer 1

sayHello 模板的 result 输入必须从 main 模板的第三步显式传递。

steps.addTenToResult.outputs.result 在 sayHello 模板定义中没有意义。以 steps. 开头的变量仅在步骤模板中有意义（即填充了 steps 字段的模板，如 main）。

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  name: program-1-prints
spec:
  entrypoint: main
  templates:
    - name: main
      steps:
        - - name: addTwoNos
            template: addTwoNosTemplate
            arguments:
              parameters:
                - name: a
                  value: '2'
                - name: b
                  value: '4'
        - - name: addTenToResult
            template: addTwoNosTemplate
            arguments:
              parameters:
                - name: a
                  value: '{{steps.addTwoNos.outputs.result}}'
                - name: b
                  value: '10'
        - - name: sayHello
            template: sayHello
            when: '{{steps.addTenToResult.outputs.result}} > 10'
            arguments:
              parameters:
                - name: result
                  value: '{{steps.addTenToResult.outputs.result}}'
    - name: addTwoNosTemplate
      inputs:
        parameters:
          - name: a
          - name: b
      container:
        image: 'alpine:latest'
        command:
          - sh
          - '-c'
        args:
          - 'echo $(( {{inputs.parameters.a}} + {{inputs.parameters.b}} ))'
    - name: sayHello
      inputs:
        parameters:
          - name: result
      container:
        image: 'alpine:latest'
        command:
          - sh
          - '-c'
        args:
          - 'echo $(( {{inputs.parameters.result}} ))'

Argo Workflow 抛出“/bin/sh：算术语法错误”

Argo Workflow throwing '/bin/sh: arithmetic syntax error'

argo-workflows