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k3k/tests/e2e
Enrico CandinoandGitHub 3a4d93f5fb Fix dangling Pods (#1021)
* Add tests asserting GetPods is scoped to the node's own Pods

Adds a unit test (fake host + virtual clients, Pods across multiple nodes plus
a dangling one) and a multi-node e2e test (a Deployment with one nginx Pod per
node via required anti-affinity; restart every k3k-kubelet agent Pod; assert no
workload Pod is deleted from the host or virtual cluster). Both pin the intended
behavior and fail against the current code; the fix follows in the next commit.

* Scope Provider.GetPods to the node's own Pods to prevent cross-node dangling-pod deletion

GetPods() listed host Pods cluster-wide (by the k3k.io/clusterName label only).
The vendored virtual-kubelet library's deleteDanglingPods reconciliation deletes
any Pod returned here that is missing from this instance's virtual Pod lister,
which is scoped to spec.nodeName == agentHostname. On a multi-node host cluster,
every restarting k3k-kubelet instance therefore saw Pods owned by other nodes as
'dangling' and deleted them from the host (and, in turn, the virtual cluster).

Scope GetPods by the *virtual* Pod's spec.nodeName -- the same ownership signal
the framework uses -- excluding Pods owned by other nodes while still returning
own-node Pods and genuinely dangling ones. The host Pod's physical node is not a
reliable owner (it is scheduled with only a soft, sometimes-absent affinity), so
it must not be used. Virtual Pods are read live to avoid a startup cache-sync
race. Makes the previous commit's tests pass.

* Refactor GetPods to scope to the cluster namespace and update tests accordingly

* Add AgentNameLabel to track Pods synced by the k3k-kubelet agent and update tests accordingly

* Add failing test for updatePod
2026-07-15 17:02:30 +02:00
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2026-04-13 17:25:17 +02:00