k8s scanning fails in 0.47.0

[michael-mader]

Description

The following command fails with trivy 0.47.0:

trivy -d k8s --context "my-context" -n default deployments/my-release

It fails with this output:

2023-11-06T11:12:28.630+0100    FATAL   k8s scan error:
    github.com/aquasecurity/trivy/pkg/k8s/commands.(*runner).run
        /home/runner/work/trivy/trivy/pkg/k8s/commands/run.go:95
  - failed to find node name

it is working in 0.46.1 and below. It is failing when using the trivy binary on MacOS 14.1 and running the 0.47.0 docker image on linux.

Desired Behavior

Runs till end and does only fail if there are vulnerabilities

Actual Behavior

Fails:

2023-11-06T11:12:28.630+0100    FATAL   k8s scan error:
    github.com/aquasecurity/trivy/pkg/k8s/commands.(*runner).run
        /home/runner/work/trivy/trivy/pkg/k8s/commands/run.go:95
  - failed to find node name

Reproduction Steps

Run `trivy -d k8s --context "my-context" -n default deployments/my-release` with correct values for your deployment to scan.

Target

Kubernetes

Scanner

Vulnerability

Output Format

None

Mode

Standalone

Debug Output

/Users/user/Downloads/trivy_0.47.0_macOS-ARM64/trivy -d k8s --context "my-context" -n default --no-progress deployments/my-deployment
2023-11-06T11:16:36.451+0100    DEBUG   Severities: ["UNKNOWN" "LOW" "MEDIUM" "HIGH" "CRITICAL"]
2023-11-06T11:16:36.452+0100    DEBUG   Ignore statuses {"statuses": null}
2023-11-06T11:16:38.362+0100    DEBUG   cache dir:  /Users/user/Library/Caches/trivy
2023-11-06T11:16:38.363+0100    DEBUG   DB update was skipped because the local DB is the latest
2023-11-06T11:16:38.363+0100    DEBUG   DB Schema: 2, UpdatedAt: 2023-11-06 06:17:59.317996254 +0000 UTC, NextUpdate: 2023-11-06 12:17:59.317995754 +0000 UTC, DownloadedAt: 2023-11-06 10:10:16.850618 +0000 UTC
1 / 1 [-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------] 100.00% 0 p/s
2023-11-06T11:16:41.552+0100    FATAL   k8s scan error:
    github.com/aquasecurity/trivy/pkg/k8s/commands.(*runner).run
        /home/runner/work/trivy/trivy/pkg/k8s/commands/run.go:95
  - failed to find node name

### Operating System

macOS 14.1

### Version

```bash
Version: 0.47.0
Vulnerability DB:
  Version: 2
  UpdatedAt: 2023-11-06 06:17:59.317996254 +0000 UTC
  NextUpdate: 2023-11-06 12:17:59.317995754 +0000 UTC
  DownloadedAt: 2023-11-06 10:10:16.850618 +0000 UTC
Java DB:
  Version: 1
  UpdatedAt: 2023-11-06 00:56:11.785628882 +0000 UTC
  NextUpdate: 2023-11-09 00:56:11.785628382 +0000 UTC
  DownloadedAt: 2023-11-06 10:10:50.304873 +0000 UTC
Policy Bundle:
  Digest: sha256:1df8ade71efc830877ca3b1130f83e0c6368e3a45b0d4c0f0418955501644054
  DownloadedAt: 2023-11-06 10:10:17.701092 +0000 UTC

Checklist

• Run trivy image --reset
• Read the troubleshooting

[knqyf263]

@chen-keinan Can you please take a quick look?

[chen-keinan]

@michael-mader I have created an issue #5528 for it and I will add a fix to it.