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Pipelines End-End Demo

Pre-requisites

  1. Openshift Cluster - You can use https://www.redhat.com/sysadmin/codeready-containers
  2. Follow Openshift Pipelines Operator installation steps to install Openshift Pipelines

Demo: How easily cronJobs can be converted to Openshift Pipelines

Scenario:

We have the following jobs:

  1. cronJob to fetch data from a particular source and store it into a PVC.
  2. cronJob to convert fetched data into CSV
  3. cronJob to read data from storage

Now let's use the Openshift Pipelines to streamline our cloud workloads.

Note: Demo assumes that he/she has knowledge about Openshift Pipelines and how to execute the resources.

Let's start

  • Demo covers
    1. How to re-use the tasks
    2. results
    3. runAfter (To manage task run)
    4. when expression(if/else)
    5. finally(cleanup/removal)
    6. workspaces(storage)
    7. params(how data can be passed from one place and used in multiple places)
  1. Create a project
oc new-project demo
  1. Create reusable task from hub.tekton.dev
oc create -f https://raw.githubusercontent.com/tektoncd/catalog/main/task/write-file/0.1/write-file.yaml
  1. create the pipeline and task that are required for the demo
oc create -f https://raw.githubusercontent.com/savitaashture/unicredit/main/examples/pipeline.yaml
  1. create pipelinerun manually
oc create -f https://raw.githubusercontent.com/savitaashture/unicredit/main/examples/pipelinerun.yaml
  1. re-create pipelinerun from console with single click

  2. Create pipelinerun dynamically based on some events using

    • Pipelines as Code
    • Triggers

The final demo looks like below

Screenshot from 2023-04-20 17-28-21

Screenshot from 2023-04-12 16-11-53