Tekton PipelineRun failed

What is Tekton PipelineRun failed

Understanding Tekton

Tekton is a powerful and flexible open-source framework for creating CI/CD systems. It allows developers to define and run continuous integration and delivery pipelines in Kubernetes. Tekton provides a set of Kubernetes Custom Resources (CRDs) that enable you to define pipelines, tasks, and other CI/CD components declaratively.

Identifying the Symptom

When working with Tekton, you might encounter a situation where a PipelineRun fails. This is a common issue that developers face, and it typically manifests as an error message indicating that the PipelineRun did not complete successfully.

Common Error Message

The error message might look something like this:

PipelineRun failed: One or more TaskRuns within the PipelineRun failed.

Exploring the Issue

The failure of a PipelineRun is often due to one or more TaskRuns within the pipeline failing. Each TaskRun represents an execution of a task, and if any of these tasks encounter an error, the entire pipeline can fail.

Possible Causes

Incorrect task configuration.Resource constraints or limits exceeded.Network issues or connectivity problems.Errors in the task's script or commands.

Steps to Fix the Issue

To resolve a failed PipelineRun, you need to inspect the logs of the failed TaskRuns to identify the specific errors. Here are the steps to do so:

Step 1: List TaskRuns

First, list all TaskRuns associated with the failed PipelineRun:

kubectl get taskruns -l tekton.dev/pipelineRun=

Replace <PipelineRunName> with the name of your failed PipelineRun.

Step 2: Inspect TaskRun Logs

Next, inspect the logs of each TaskRun to identify the error:

tkn taskrun logs -f

Replace <TaskRunName> with the name of the TaskRun you want to inspect. The tkn CLI tool is part of the Tekton CLI, which you can install from the Tekton CLI GitHub repository.

Step 3: Analyze and Fix Errors

Once you identify the error, take appropriate action to fix it. This might involve:

Correcting any script or command errors in the task.Adjusting resource requests and limits.Resolving network or connectivity issues.

Conclusion

By following these steps, you can diagnose and resolve issues that cause a PipelineRun to fail in Tekton. For more detailed information, refer to the Tekton PipelineRuns documentation.