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Chapter 6. Red Hat OpenShift Pipelines release notes

Red Hat OpenShift Pipelines is a cloud-native CI/CD experience based on the Tekton project which provides:

  • Standard Kubernetes-native pipeline definitions (CRDs).
  • Serverless pipelines with no CI server management overhead.
  • Extensibility to build images using any Kubernetes tool, such as S2I, Buildah, JIB, and Kaniko.
  • Portability across any Kubernetes distribution.
  • Powerful CLI for interacting with pipelines.
  • Integrated user experience with the Developer perspective of the OpenShift Container Platform web console.

For an overview of Red Hat OpenShift Pipelines, see Understanding OpenShift Pipelines.

6.1. Getting support
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If you experience difficulty with a procedure described in this documentation, visit the Red Hat Customer Portal to learn more about Red Hat Technology Preview features support scope.

For questions and feedback, you can send an email to the product team at pipelines-interest@redhat.com.

6.2. Release notes for Red Hat Red Hat OpenShift Pipelines Technology Preview 1.1
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6.2.1. New features
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Red Hat OpenShift Pipelines Technology Preview (TP) 1.1 is now available on OpenShift Container Platform 4.5. Red Hat OpenShift Pipelines TP 1.1 is updated to support:

  • Tekton Pipelines 0.14.3
  • Tekton tkn CLI 0.11.0
  • Tekton Triggers 0.6.1
  • ClusterTasks based on Tekton Catalog 0.14

In addition to the fixes and stability improvements, here is a highlight of what’s new in OpenShift Pipelines 1.1.

6.2.1.1. Pipelines
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  • Workspaces can now be used instead of PipelineResources. It is recommended that you use Workspaces in OpenShift Pipelines, as PipelineResources are difficult to debug, limited in scope, and make Tasks less reusable. For more details on Workspaces, see Understanding OpenShift Pipelines.

  • Workspace support for VolumeClaimTemplates has been added:

    • The VolumeClaimTemplate for a PipelineRun and TaskRun can now be added as a volume source for Workspaces. The tekton-controller then creates a PersistentVolumeClaim (PVC) using the template that is seen as a PVC for all TaskRuns in the Pipeline. Thus you do not need to define the PVC configuration every time it binds a workspace that spans multiple tasks.
    • Support to find the name of the PersistentVolumeClaim when a VolumeClaimTemplate is used as a volume source is now available using variable substitution.

  • Support for improving audits:

    • The PipelineRun.Status field now contains the status of every TaskRun in the Pipeline and the Pipeline specification used to instantiate a PipelineRun to monitor the progress of the PipelineRun.
    • Pipeline results have been added to the pipeline specification and PipelineRun status.
    • The TaskRun.Status field now contains the exact Task specification used to instantiate the TaskRun.
  • Support to apply the default parameter to Conditions.
  • A TaskRun created by referencing a ClusterTask now adds the tekton.dev/clusterTask label instead of the tekton.dev/task label.
  • The kubeconfigwriter now adds the ClientKeyData and the ClientCertificateData configurations in the Resource structure to enable replacement of the pipeline resource type cluster with the kubeconfig-creator Task.
  • The names of the feature-flags and the config-defaults ConfigMaps are now customizable.
  • Support for HostNetwork in the PodTemplate used by TaskRun is now available.
  • An Affinity Assistant is now available to support node affinity in TaskRuns that share workspace volume. By default, this is disabled on OpenShift Pipelines.
  • The PodTemplate has been updated to specify imagePullSecrets to identify secrets that the container runtime should use to authorize container image pulls when starting a pod.
  • Support for emitting warning events from the TaskRun controller if the controller fails to update the TaskRun.
  • Standard or recommended k8s labels have been added to all resources to identify resources belonging to an application or component.
  • The Entrypoint process is now notified for signals and these signals are then propagated using a dedicated PID Group of the Entrypoint process.
  • The PodTemplate can now be set on a Task level at runtime using TaskRunSpecs.

  • Support for emitting Kubernetes events:

    • The controller now emits events for additional TaskRun lifecycle events - taskrun started and taskrun running.
    • The PipelineRun controller now emits an event every time a Pipeline starts.
  • In addition to the default Kubernetes events, support for CloudEvents for TaskRuns is now available. The controller can be configured to send any TaskRun events, such as create, started, and failed, as cloud events.
  • Support for using the $context.<task|taskRun|pipeline|pipelineRun>.name variable to reference the appropriate name when in PipelineRuns and TaskRuns.
  • Validation for PipelineRun parameters is now available to ensure that all the parameters required by the Pipeline are provided by the PipelineRun. This also allows PipelineRuns to provide extra parameters in addition to the required parameters.
  • You can now specify Tasks within a Pipeline that will always execute before the pipeline exits, either after finishing all tasks successfully or after a Task in the Pipeline failed, using the finally field in the Pipeline YAML file.
  • The git-clone ClusterTask is now available.

6.2.1.2. Pipelines CLI
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  • Support for embedded Trigger binding is now available to the tkn evenlistener describe command.
  • Support to recommend subcommands and make suggestions if an incorrect subcommand is used.
  • The tkn task describe command now auto selects the task if only one task is present in the Pipeline.
  • You can now start a Task using default parameter values by specifying the --use-param-defaults flag in the tkn task start command.
  • You can now specify a volumeClaimTemplate for PipelineRuns or TaskRuns using the --workspace option with the tkn pipeline start or tkn task start commands.
  • The tkn pipelinerun logs command now displays logs for the final tasks listed in the finally section.
  • Interactive mode support has now been provided to the tkn task start command and the describe subcommand for the following tkn resources: pipeline, pipelinerun, task, taskrun, clustertask, and pipelineresource.
  • The tkn version command now displays the version of the Triggers installed in the cluster.
  • The tkn pipeline describe command now displays parameter values and timeouts specified for Tasks used in the Pipeline.
  • Support added for the --last option for the tkn pipelinerun describe and the tkn taskrun describe commands to describe the most recent PipelineRun or TaskRun, respectively.
  • The tkn pipeline describe command now displays the conditions applicable to the Tasks in the Pipeline.
  • You can now use the --no-headers and --all-namespaces flags with the tkn resource list command.

6.2.1.3. Triggers
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  • The following Common Expression Language (CEL) functions are now available:

    • parseURL to parse and extract portions of a URL
    • parseJSON to parse JSON value types embedded in a string in the payload field of the deployment webhook
  • A new interceptor for webhooks from Bitbucket has been added.
  • EventListeners now display the Address URL and the Available status as additional fields when listed with the kubectl get command.
  • TriggerTemplate params now use the $(tt.params.<paramName>) syntax instead of $(params.<paramName>) to reduce the confusion between TriggerTemplate and ResourceTemplates params.
  • You can now add tolerations in the EventListener CRD to ensure that EventListeners are deployed with the same configuration even if all nodes are tainted due to security or management issues.
  • You can now add a Readiness Probe for EventListener Deployment at URL/live.
  • Support for embedding TriggerBinding specifications in EventListener Triggers.
  • Trigger resources are now annotated with the recommended app.kubernetes.io labels.

6.2.2. Deprecated features
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The following items are deprecated in this release:

  • The --namespace or -n flags for all cluster-wide commands, including the clustertask and clustertriggerbinding commands, are deprecated. It will be removed in a future release.
  • The name field in triggers.bindings within an EventListener has been deprecated in favor of the ref field and will be removed in a future release.
  • Variable interpolation in TriggerTemplates using $(params) has been deprecated in favor of using $(tt.params) to reduce confusion with the Pipeline variable interpolation syntax. The $(params.<paramName>) syntax will be removed in a future release.
  • The tekton.dev/task label is deprecated on ClusterTasks.
  • The TaskRun.Status.ResourceResults.ResourceRef field is deprecated and will be removed.
  • The tkn pipeline create, tkn task create, and tkn resource create -f subcommands have been removed.
  • Namespace validation has been removed from tkn commands.
  • The default timeout of 1h and the -t flag for the tkn ct start command have been removed.
  • The s2i ClusterTask has been deprecated.

6.2.3. Known issues
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  • Conditions do not support Workspaces.
  • The --workspace option and the interactive mode is not supported for the tkn clustertask start command.
  • Support of backward compatibility for $(params.<paramName>) forces you to use TriggerTemplates with pipeline specific params as the Triggers webhook is unable to differentiate Trigger params from pipelines params.
  • Pipeline metrics report incorrect values when you run a promQL query for tekton_taskrun_count and tekton_taskrun_duration_seconds_count.
  • PipelineRuns and TaskRuns continue to be in the Running and Running(Pending) states respectively even when a non existing PVC name is given to a Workspace.

6.2.4. Fixed issues
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  • Previously, the tkn task delete <name> --trs command would delete both the Task and ClusterTask if the name of the Task and ClusterTask were the same. With this fix, the command deletes only the TaskRuns that are created by the Task <name>.
  • Previously the tkn pr delete -p <name> --keep 2 command would disregard the -p flag when used with the --keep flag and would delete all the PipelineRuns except the latest two. With this fix, the command deletes only the PipelineRuns that are created by the Pipeline <name>, except for the latest two.
  • The tkn triggertemplate describe output now displays ResourceTemplates in a table format instead of YAML format.
  • Previously the buildah ClusterTask failed when a new user was added to a container. With this fix, the issue has been resolved.

6.3. Release notes for Red Hat Red Hat OpenShift Pipelines Technology Preview 1.0
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6.3.1. New features
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Red Hat OpenShift Pipelines Technology Preview (TP) 1.0 is now available on OpenShift Container Platform 4.5. Red Hat OpenShift Pipelines TP 1.0 is updated to support:

  • Tekton Pipelines 0.11.3
  • Tekton tkn CLI 0.9.0
  • Tekton Triggers 0.4.0
  • ClusterTasks based on Tekton Catalog 0.11

In addition to the fixes and stability improvements, here is a highlight of what’s new in OpenShift Pipelines 1.0.

6.3.1.1. Pipelines
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  • Support for v1beta1 API Version.
  • Support for an improved LimitRange. Previously, LimitRange was specified exclusively for the TaskRun and the PipelineRun. Now there is no need to explicitly specify the LimitRange. The minimum LimitRange across the namespace is used.
  • Support for sharing data between Tasks using TaskResults and TaskParams.
  • Pipelines can now be configured to not overwrite the HOME environment variable and workingDir of Steps.
  • Similar to Task Steps, sidecars now support script mode.
  • You can now specify a different scheduler name in TaskRun podTemplate.
  • Support for variable substitution using Star Array Notation.
  • Tekton Controller can now be configured to monitor an individual namespace.
  • A new description field is now added to the specification of Pipeline, Task, ClusterTask, Resource, and Condition.
  • Addition of proxy parameters to Git PipelineResources.

6.3.1.2. Pipelines CLI
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  • The describe subcommand is now added for the following tkn resources: eventlistener, condition, triggertemplate, clustertask, and triggerbinding.
  • Support added for v1beta1 to the following commands along with backward comptibility for v1alpha1: clustertask, task, pipeline, pipelinerun, and taskrun.

  • The following commands can now list output from all namespaces using the --all-namespaces flag option:

    • tkn task list
    • tkn pipeline list
    • tkn taskrun list

    • tkn pipelinerun list

      The output of these commands is also enhanced to display information without headers using the --no-headers flag option.

  • You can now start a Pipeline using default parameter values by specifying --use-param-defaults flag in the tkn pipelines start command.
  • Support for Workspace is now added to tkn pipeline start and tkn task start commands.
  • A new clustertriggerbinding command is now added with the following subcommands: describe, delete, and list.
  • You can now directly start a pipeline run using a local or remote yaml file.
  • The describe subcommand now displays an enhanced and detailed output. With the addition of new fields, such as description, timeout, param description, and sidecar status, the command output now provides more detailed information about a specific tkn resource.
  • The tkn task log command now displays logs directly if only one task is present in the namespace.

6.3.1.3. Triggers
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  • Triggers can now create both v1alpha1 and v1beta1 Pipeline resources.
  • Support for new Common Expression Language (CEL) interceptor function - compareSecret. This function securely compares strings to secrets in CEL expressions.
  • Support for authentication and authorization at the EventListener Trigger level.

6.3.2. Deprecated features
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The following items are deprecated in this release:

  • The environment variable $HOME, and variable workingDir in the Steps specification are deprecated and might be changed in a future release. Currently in a Step container, HOME and workingDir are overwritten to /tekton/home and /workspace respectively.

    In a later release, these two fields will not be modified, and will be set to values defined in the container image and Task YAML. For this release, use flags disable-home-env-overwrite and disable-working-directory-overwrite to disable overwriting of the HOME and workingDir variables.

  • The following commands are deprecated and might be removed in the future release:

    • tkn pipeline create
    • tkn task create
  • The -f flag with the tkn resource create command is now deprecated. It might be removed in the future release.
  • The -t flag and the --timeout flag (with seconds format) for the tkn clustertask create command are now deprecated. Only duration timeout format is now supported, for example 1h30s. These deprecated flags might be removed in the future release.

6.3.3. Known issues
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  • If you are upgrading from an older version of Red Hat OpenShift Pipelines, you must delete your existing deployments before upgrading to Red Hat OpenShift Pipelines version 1.0. To delete an existing deployment, you must first delete Custom Resources and then uninstall the Red Hat OpenShift Pipelines Operator. For more details, see the uninstalling Red Hat OpenShift Pipelines section.
  • Submitting the same v1alpha1 Tasks more than once results in an error. Use oc replace instead of oc apply when re-submitting a v1alpha1 Task.

  • The buildah ClusterTask does not work when a new user is added to a container.

    When the Operator is installed, the --storage-driver flag for the buildah ClusterTask is not specified, therefore the flag is set to its default value. In some cases, this causes the storage driver to be set incorrectly. When a new user is added, the incorrect storage-driver results in the failure of the buildah ClusterTask with the following error: 

    useradd: /etc/passwd.8: lock file already used
useradd: cannot lock /etc/passwd; try again later.
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    As a workaround, manually set the --storage-driver flag value to overlay in the buildah-task.yaml file:

    1. Login to your cluster as a cluster-admin: 

      $ oc login -u <login> -p <password> https://openshift.example.com:6443
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    2. Use the oc edit command to edit buildah ClusterTask: 

      $ oc edit clustertask buildah
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      The current version of the buildah clustertask YAML file opens in the editor set by your EDITOR environment variable.

    3. Under the steps field, locate the following command field: 

       command: ['buildah', 'bud', '--format=$(params.FORMAT)', '--tls-verify=$(params.TLSVERIFY)', '--layers', '-f', '$(params.DOCKERFILE)', '-t', '$(resources.outputs.image.url)', '$(params.CONTEXT)']
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    4. Replace the command field with the following: 

       command: ['buildah', '--storage-driver=overlay', 'bud', '--format=$(params.FORMAT)', '--tls-verify=$(params.TLSVERIFY)', '--no-cache', '-f', '$(params.DOCKERFILE)', '-t', '$(params.IMAGE)', '$(params.CONTEXT)']
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    5. Save the file and exit.

    Alternatively, you can also modify the buildah ClusterTask YAML file directly on the web console by navigating to Pipelines Cluster Tasks buildah. Select Edit Cluster Task from the Actions menu and replace the command field as shown in the previous procedure.

6.3.4. Fixed issues
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  • Previously, the DeploymentConfig Task triggered a new deployment build even when an image build was already in progress. This caused the deployment of the Pipeline to fail. With this fix, the deploy task command is now replaced with the oc rollout status command which waits for the in-progress deployment to finish.
  • Support for APP_NAME parameter is now added in Pipeline templates.
  • Previously, the Pipeline template for Java S2I failed to look up the image in the registry. With this fix, the image is looked up using the existing image PipelineResources instead of the user provided IMAGE_NAME parameter.
  • All the OpenShift Pipelines images are now based on the Red Hat Universal Base Images (UBI).
  • Previously, when the Pipeline was installed in a namespace other than tekton-pipelines, the tkn version command displayed the Pipeline version as unknown. With this fix, the tkn version command now displays the correct Pipeline version in any namespace.
  • The -c flag is no longer supported for the tkn version command.
  • Non-admin users can now list the ClusterTriggerBindings.
  • The EventListener CompareSecret function is now fixed for the CEL Interceptor.
  • The list, describe, and start subcommands for task and clustertask now correctly display the output in case a Task and ClusterTask have the same name.
  • Previously, the OpenShift Pipelines Operator modified the privileged security context constraints (SCCs), which caused an error during cluster upgrade. This error is now fixed.
  • In the tekton-pipelines namespace, the timeouts of all TaskRuns and PipelineRuns are now set to the value of default-timeout-minutes field using the ConfigMap.
  • Previously, the Pipelines section in the web console was not displayed for non-admin users. This issue is now resolved.
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