feat(kubernetes_events source): add k8s events src by elohmeier · Pull Request #24448 · vectordotdev/vector

elohmeier · 2026-01-06T10:45:45Z

Summary

This PR adds a new kubernetes_events source that watches the Kubernetes Events API and emits each event as a Vector log event. This addresses a long-standing feature request and brings Vector closer to feature parity with other observability tools in the Kubernetes ecosystem.

The design is influenced by similar implementations in:

Key features:

Watches the modern events.k8s.io/v1 API (not the deprecated core/v1 Event API)
Supports namespace filtering, field selectors, and label selectors
Filters by event type (Warning, Normal), reason, and involved object kind
Built-in deduplication to handle Kubernetes event replay on API reconnection
Configurable max event age to skip stale events on startup
Optional inclusion of previous event state for change tracking
Designed for singleton deployment (one instance per cluster)

We've been using this in Production in various clusters for some weeks now and it has been working fine.

Vector configuration

sources:
  k8s_events:
    type: kubernetes_events
    namespaces:
      - kube-system
      - default
    include_types:
      - Warning
    max_event_age_seconds: 3600

sinks:
  console:
    type: console
    inputs:
      - k8s_events
    encoding:
      codec: json

How did you test this PR?

Unit tests for deduplication logic, event timestamping, and filtering
Manual testing against a local Kubernetes cluster (kind/minikube)
Verified event streaming, reconnection handling, and deduplication behavior

Change Type

Bug fix
New feature
Non-functional (chore, refactoring, docs)
Performance

Is this a breaking change?

Yes
No

Does this PR include user facing changes?

Yes. Please add a changelog fragment based on our guidelines.
No. A maintainer will apply the no-changelog label to this PR.

References

Closes: New kubernetes_system_events source #1293

maycmlee

Just some small suggestions!

…events.cue Co-authored-by: May Lee <may.lee@datadoghq.com>

Co-authored-by: May Lee <may.lee@datadoghq.com>

lukasmrtvy · 2026-02-04T07:20:16Z

@maycmlee friendly ping. Possible to merge? Thanks

maycmlee

Looks good for docs! Let me see if someone from eng can review.

maycmlee · 2026-02-05T14:35:27Z

@lukasmrtvy someone from eng will review and be in touch. Thanks for opening this PR!

Smana · 2026-03-06T15:15:42Z

@maycmlee are there any news for the PR please? thank you

maycmlee · 2026-03-17T16:54:43Z

@Smana sorry for the delayed response! I'm checking in with the eng team again.

pront · 2026-03-17T18:25:43Z

@codex review

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dm3ch · 2026-04-21T23:14:23Z

@maycmlee / maintainers — what's the status of this PR from an engineering perspective?
Is there anything blocking a review, or specific concerns about accepting a new kubernetes source?
Happy to help move this forward if there's something concrete I can do.

@elohmeier great work on this. Do you have plans to extend it with leader election
(Lease-based, so it's safe to run with replicas > 1) and some form of checkpoint
to avoid duplicate events on restart or leader change — either here or in a follow-up PR?

I'd like to add both, but unsure whether to wait your PR merge, build on top of this PR or do it separately.
Wanted to check your intentions first before starting planning anything on my own.

maycmlee · 2026-04-22T13:53:00Z

@maycmlee / maintainers — what's the status of this PR from an engineering perspective?
Is there anything blocking a review, or specific concerns about accepting a new kubernetes source?
Happy to help move this forward if there's something concrete I can do.

Looping in @pront to address your questions. Thanks!

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elohmeier · 2026-04-24T07:08:06Z

I'm grateful for the interest in this PR.
@dm3ch thanks for your suggestions. I've implemented leader election and tested it in a K8S cluster. I would leave the checkpoint out of this PR as it is more controversial on how to store the state, but I think it should be implemented.

currently fixing the open codex issues

# Conflicts: # Cargo.lock

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feat(kubernetes_events source): add k8s events src

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elohmeier requested review from a team as code owners January 6, 2026 10:45

github-actions Bot added domain: sources Anything related to the Vector's sources domain: external docs Anything related to Vector's external, public documentation labels Jan 6, 2026

maycmlee self-assigned this Jan 6, 2026

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elohmeier and others added 10 commits January 6, 2026 21:40

Update website/cue/reference/components/sources/generated/kubernetes_…

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maycmlee approved these changes Feb 4, 2026

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thomasqueirozb added source: new Request or implementation of a new source platform: kubernetes Anything `kubernetes` platform related labels Feb 17, 2026

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Comment thread src/sources/kubernetes_events/mod.rs Outdated

Merge branch 'master' into k8s-events-source

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fix(kubernetes_events): prefer series timestamps

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Comment thread src/sources/kubernetes_events/mod.rs Outdated

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Add leader election to kubernetes events source

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elohmeier added 2 commits April 24, 2026 09:28

fix(kubernetes_events): align source metadata

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Merge remote-tracking branch 'origin/master' into k8s-events-source

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# Conflicts: # Cargo.lock

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fix(kubernetes_events): protect leader renewal

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fix(kubernetes_events): defer dedupe commits

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Summary

Vector configuration

How did you test this PR?

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References

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