Create a workflow

Create workflows in the ACK console

1. Log on to the ACK console.
2. In the left-side navigation pane, click Clusters.
3. On the Clusters page, click the name of a cluster or click Details in the Actions column. The details page of the cluster appears.
4. In the left-side navigation pane, click Releases.
5. On the Releases page, click the Workflows tab. On the upper-right corner of the Workflows tab, click Create.
6. In the Create from Template dialog box, set the parameters, configure the template, and then click Create.
   • Cluster: Select a cluster. The workflow will be deployed in the selected cluster.
   • Namespace: Select the namespace to which the workflow belongs. By default, the default namespace is selected.
   • Sample Template: ACK provides YAML templates of various resource types to simplify the deployment of workflows. You can also create a custom template based on YAML syntax to describe the resource that you want to define.

   The following example is a custom template that is used to create a Hello World workflow:

   apiVersion: argoproj.io/v1alpha1
   kind: Workflow                  # new type of k8s spec
   metadata:
     generateName: hello-world-    # name of the workflow spec
   spec:
     entrypoint: whalesay          # invoke the whalesay template
     templates:
     - name: whalesay              # name of the template
       container:
         image: docker/whalesay
         command: [cowsay]
         args: ["hello world"]
         resources:                # limit the resources
           limits:
             memory: 32Mi
             cpu: 100m

7. After the workflow is created, you can view the created workflow on the Workflows tab.
   

   You can click Details in the Actions column to view information about the workflow and container groups.

Create parameters workflows by using the CLI

1. Create a YAML file named arguments-parameters.yaml and paste the following content into the file:

   apiVersion: argoproj.io/v1alpha1
   kind: Workflow
   metadata:
     generateName: hello-world-parameters-
   spec:
     # invoke the whalesay template with
     # "hello world" as the argument
     # to the message parameter
     entrypoint: whalesay
     arguments:
       parameters:
       - name: message
         value: hello world
   
     templates:
     - name: whalesay
       inputs:
         parameters:
         - name: message       # parameter declaration
       container:
         # run cowsay with that message input parameter as args
         image: docker/whalesay
         command: [cowsay]
         args: ["{{inputs.parameters.message}}"]

2. Run the following command to deploy the parameters workflow:

   ags submit arguments-parameters.yaml -p message="goodbye world"

You can also use workflow templates provided in Sample workflow templates to create other types of workflows.

Ags CLI is a command-line interface developed by Alibaba Cloud. It is compatible with open source Argo. Ags CLI provides an easy way to submit, check, modify, and delete workflows. For more information, see Introduction to AGS CLI.