Argo中steps与k8s资源创建删除结合

随着Kubernetes越来越普遍的使用，基于K8S的workflow工具Argo也受到越来越多的关注。
Argo官方已经给出了很多不同的Workflow的编写方法，但是如果你需要不止一种的方法应该怎么处理呢？
本文以steps和kubernetes resource这两种流程的结合，给大家提供一个思路。
废话不多说，直接上yaml：

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: steps-
spec:
  serviceAccountName: workflow
  entrypoint: create-hello-delete
  templates:
  - name: create-hello-delete
    steps:
    - - name: create
        template: createdp
    - - name: hello
        template: whalesay
        arguments:
          parameters:
          - name: message
            value: "hello2a"
    - - name: delete
        template: deletedp
  - name: whalesay
    inputs:
      parameters:
      - name: message
    container:
      image: docker/whalesay
      command: [cowsay]
      args: ["{{inputs.parameters.message}}"]
  - name: createdp
    resource:                   # indicates that this is a resource template
      action: create            # can be any kubectl action (e.g. create, delete, apply, patch)
      manifest: |               #put your kubernetes spec here
        apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
        kind: Deployment
        metadata:
          name: brokerclinet
        spec:
          selector:
            matchLabels:
              app: brokerclinet
          replicas: 1 # tells deployment to run 2 pods matching the template
          template:
            metadata:
              labels:
                app: brokerclinet
            spec:
              containers:
              - name: brokerclinet
                image: brokerclient:1.0.0
                imagePullPolicy: IfNotPresent
                ports:
                - containerPort: 5000
  - name: deletedp
    resource:                   # indicates that this is a resource template
      action: delete            # can be any kubectl action (e.g. create, delete, apply, patch)
      manifest: |               #put your kubernetes spec here
        apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
        kind: Deployment
        metadata:
          name: brokerclinet

这里，我希望argo生成一个包含三步的workflow，第一步，创建一个名叫brokerclinet的deployment，然后生成一个以docker/whalesay为基础镜像的容器，并打印一些语句，最后，删除第一步创建的brokerclinet。
需要注意，对于官方给出的steps的yaml文件，不要直接把k8s资源的那个例子直接填充到每个step里面，而是把k8s资源的部分单独提出来，做一个template，而只在每一个step的里面调用该template即可，否则argo submit的时候会报resource字段不能识别的问题。

基于此，如果需要组合多种workflow的方法，要考虑把一些方法做成template，然后再调用template，这样可以满足多种方法的混合。