test(e2e): add ZRS PV multi-zone scheduling test #1318
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- add test validating pod with ZRS PV schedules correctly in zone 2 - add SupportsZones() method to skip test in non-zonal regions - add EventuallyExpectPVCBound() helper function - integrate zone provider in test environment
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tallaxes
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matthchr
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Jan 7, 2026
| sigs.k8s.io/karpenter v1.6.2 | ||
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| replace sigs.k8s.io/karpenter => github.com/tallaxes/karpenter-core v0.0.0-20251221063144-7863910ee631 |
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Dont forget to remove before merge.
| // considers ALL PV node affinity terms (not just the first), we intentionally | ||
| // schedule the pod in zone 2. Without the sigs.k8s.io/karpenter fix, this would fail | ||
| // because the scheduler only looked at the first zone. | ||
| zone2 := utils.MakeAKSLabelZoneFromARMZone(env.Region, zones[1]) |
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Is it guaranteed that zones is always either len 0 or len 2? It can't be len 1?
If it's length 1, we'd get here and panic
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Description
Add an integration test that validates Karpenter correctly schedules pods with ZRS (Zone Redundant Storage) persistent volumes when the pod targets a specific zone.
This test validates the fix in kubernetes-sigs/karpenter#2743 which ensures Karpenter considers ALL PV node affinity terms during scheduling, not just the first one. ZRS disks are accessible in all zones of a region, so the PV node affinity includes multiple zone terms. Without the fix, pods targeting zone 2 would fail because only the first zone term was considered.
Changes:
VolumeBindingImmediateStorageClassEventuallyExpectPVCBound()helper functionHow was this change tested?
Does this change impact docs?
Release Note