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Version: 3.15

Align Custom Tekton Pipelines with 3.15

This page applies if you maintain your own Tekton pipeline library — custom Pipeline resources referenced from CodebaseBranch.spec.pipelines, typically modeled on the platform's shipped pipelines (see Create and Use Custom Tekton Pipelines). The edp-tekton 0.27.0 chart shipped with 3.15 changes several contracts such pipelines rely on. Every item below can be applied before the platform upgrade — each change is compatible with both the 3.14 (0.26) and 3.15 (0.27) releases — so custom pipelines keep working through the upgrade instead of breaking with it.

What Changed for Pipeline Authors​

  • ServiceAccount resolution. Webhook-triggered PipelineRuns no longer run as the privileged tekton ServiceAccount. The interceptor reads the app.edp.epam.com/service-account annotation from the Pipeline named in CodebaseBranch.spec.pipelines.{build,review} and passes it to the trigger templates; a missing annotation, a missing Pipeline, or any lookup error silently falls back to tekton.defaultServiceAccount (tekton-unprivileged — no role bindings and no mounted API token). See Upgrade v3.14 to 3.15, Step 2.
  • The tekton ServiceAccount's Role was narrowed. It loses access to configmaps, codebases (broad reads), cdpipelines, stages, applicationsets, and taskruns; those capabilities moved to the new tekton-cd and tekton-security accounts bound only to the CD and security trigger templates. Annotating a custom pipeline with tekton therefore does not restore its pre-3.15 permissions.
  • Build trigger templates pass fewer parameters. The gitsha parameter is no longer passed to build PipelineRuns (GitHub and Bitbucket), and the Jira parameters (TICKET_NAME_PATTERN, JIRA_ISSUE_METADATA_PAYLOAD, JIRA_SERVER) are no longer passed by any provider's build template. The push-to-jira Task was removed entirely.
  • Status voting was consolidated. Shipped pipelines vote on $(tasks.fetch-repository.results.commit) — the commit the clone actually checked out — and report the final status through a single unguarded finally task driven by PIPELINE_STATUS: $(tasks.status), which also reports cancelled and timed-out runs the legacy success/failure task pair silently missed.

Migration Checklist​

1. Annotate every custom Pipeline with a dedicated ServiceAccount​

Create a ServiceAccount per pipeline family, scoped to what the pipelines actually need, and annotate both build and review Pipelines:

Custom pipeline with a dedicated ServiceAccount
apiVersion: tekton.dev/v1
kind: Pipeline
metadata:
  name: my-app-build
  annotations:
    app.edp.epam.com/service-account: my-team-pipelines

The annotation is inert on 0.26 (trigger templates there hardcode tekton), so it can be merged ahead of the upgrade. Do not skip review pipelines whose tasks call the Kubernetes API — without the annotation they run as tekton-unprivileged after the upgrade and fail with authorization errors.

2. Audit the ServiceAccount's RBAC against real task API calls​

Walk every task your pipelines reference and list its Kubernetes API calls (kubectl invocations including --subresource, tkn, client libraries), then grant exactly those. Typical needs for build pipelines modeled on the shipped ones: codebasebranches get and codebasebranches/status get/patch (version bumping), codebaseimagestreams get/list/patch (image stream tags), taskruns list (wait-style tasks). Do not point custom pipelines at tekton and assume parity — its Role no longer covers configmaps, cdpipelines, stages, applicationsets, or taskruns.

3. Carry the credential channels the tekton ServiceAccount provided​

RBAC is not the only thing the old ServiceAccount carried. Mirror the relevant channels onto the dedicated account, or image pushes fail even with perfect RBAC:

Dedicated ServiceAccount with the tekton SA's credential channels
apiVersion: v1
kind: ServiceAccount
metadata:
  name: my-team-pipelines
  annotations:
    # ECR via IRSA: same role as kaniko.roleArn in the pipelines-library values
    eks.amazonaws.com/role-arn: arn:aws:iam::<ACCOUNT_ID>:role/<KANIKO_ROLE>
secrets:
  # non-ECR registries: Tekton creds-init merges this into the step's docker config
  - name: kaniko-docker-config
imagePullSecrets:
  - name: <pull-secret-if-used>

On EKS, also extend the IAM role's trust policy with the new ServiceAccount (system:serviceaccount:<namespace>:my-team-pipelines) — the annotation alone does not authenticate.

4. Fix the trigger template parameter contract​

Audit custom build pipelines for parameters the 0.27 templates no longer pass:

  • A required gitsha parameter (no default) fails every build run at admission after the upgrade with pipelineRun missing parameters: [gitsha]. Migrate to the shipped pattern: remove the parameter and vote on $(tasks.fetch-repository.results.commit) in the status tasks. Consuming the clone's commit result also orders the status task after the clone and skips it structurally when nothing was cloned, replacing any manual when guards. Review pipelines keep gitsha — the review templates still pass it.
  • Remove or default the Jira parameters (TICKET_NAME_PATTERN, JIRA_ISSUE_METADATA_PAYLOAD, JIRA_SERVER) and drop any push-to-jira task references — the Task no longer exists.

Both fixes are safe on 0.26: Tekton explicitly ignores extra PipelineRun parameters, so templates still passing the old values do no harm.

5. Sequence the cutover​

The two mechanisms activate at different times, and mixing them up breaks pipelines before the upgrade:

  • serviceAccountName pinned in your own TriggerTemplates, CronJobs, or tasks that create PipelineRuns switches the moment your chart deploys — those ServiceAccounts and their RBAC must be complete on day one.
  • The Pipeline annotation waits for the 0.27 interceptor — webhook-triggered build/review runs stay on tekton until the platform upgrade completes.

Consequently, if you move RoleBindings from tekton to the new account (for example a namespace-admin binding used by e2e tasks), keep tekton as a second subject until the upgrade lands, then remove it. Dropping it early revokes access from runs that still execute as tekton.

Verification​

  • CodebaseBranch.spec.pipelines.{build,review} is populated for every codebase using custom pipelines — the interceptor resolves the annotation through that map, and an empty map silently downgrades runs to tekton-unprivileged.
  • After the upgrade, a webhook-triggered run shows the dedicated account in spec.taskRunTemplate.serviceAccountName.
  • A build run votes the commit status on the cloned commit and reports a final status even when cancelled.
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