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[k8s.io] [Feature:Example] [k8s.io] Downward API should create a pod that prints his name and namespace {Kubernetes e2e suite}

Freshabout 21 hours ago
Mar 14, 20260 views
Confidence Score55%
55%

Problem

https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/logs/kubernetes-e2e-gce-examples/14289/ Failed: [k8s.io] [Feature:Example] [k8s.io] Downward API should create a pod that prints his name and namespace {Kubernetes e2e suite} [code block]

Error Output

error:
    <exec.CodeExitError>: {

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Fix Downward API Pod Creation Failure in Kubernetes E2E Tests

Medium Risk

The failure in the e2e test for the Downward API is likely due to incorrect configuration in the pod specification or an issue with the test environment. Specifically, the test may not be correctly referencing the pod's metadata, such as its name and namespace, which are required for the Downward API to function properly. Additionally, environmental factors like permissions or resource availability on the test cluster may also contribute to this failure.

Awaiting Verification

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  1. 1

    Review Pod Specification

    Check the pod specification used in the e2e test to ensure that it correctly references the Downward API fields for name and namespace.

    yaml
    apiVersion: v1
kind: Pod
metadata:
  name: downward-api-test
spec:
  containers:
  - name: main-container
    image: example-image
    env:
    - name: POD_NAME
      valueFrom:
        fieldRef:
          fieldPath: metadata.name
    - name: POD_NAMESPACE
      valueFrom:
        fieldRef:
          fieldPath: metadata.namespace
    command: ['sh', '-c', 'echo Name: $POD_NAME, Namespace: $POD_NAMESPACE']
  2. 2

    Verify Cluster Permissions

    Ensure that the service account used by the e2e tests has the necessary permissions to access pod metadata. This can be done by checking the Role and RoleBinding configurations.

    bash
    kubectl get rolebinding -n <namespace>
  3. 3

    Run the E2E Test Locally

    Execute the e2e test locally in a controlled environment to isolate the issue. This will help determine if the problem is with the test itself or the cluster environment.

    bash
    go test -v ./test/e2e/ --run DownwardAPI
  4. 4

    Check Cluster Resource Availability

    Ensure that the cluster has sufficient resources (CPU, memory) to run the test pods. Insufficient resources can lead to unexpected pod failures.

    bash
    kubectl describe nodes

Validation

Confirm the fix by re-running the e2e tests and checking that the Downward API test passes without errors. Additionally, verify that the pod outputs the expected name and namespace correctly in the logs.

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Environment

Submitted by

AC

Alex Chen

2450 rep

Tags

kubernetesk8scontainerspriority/critical-urgentkind/flake