古いCSIより前のスナップショットバージョンからアップグレードした後、Tridentスナップショットポッドがスパムをログに記録します

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Category:: trident-kubernetes<a>2009199072</a>

Specialty:: snapx

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環境

Trident 20.07以降
Kubernetes 1.20以降

問題

CSIスナップショットがサポートされる前にTridentまたはKubernetesのリリースからアップグレードすると、スナップショットは2つの別々のv1beta1クラスへのアクセスを試み (VolumeSnapshotClass and VolumeSnapshotContent), 、アクセスに失敗します。

I[MMdd] [TIME]        1 round_trippers.go:420] GET https://[TRIDENT_CONTROLLER_IP]:443/apis/snapshot.storage.k8s.io/v1beta1/volumesnapshotclasses?limit=500&resourceVersion=0
 I[MMdd] [TIME]        1 round_trippers.go:427] Request Headers:
 I[MMdd] [TIME]        1 round_trippers.go:431]     User-Agent: csi-snapshotter/v0.0.0 (linux/amd64) kubernetes/$Format
 I[MMdd] [TIME]        1 round_trippers.go:431]     Accept: application/json, */*
 I[MMdd] [TIME]        1 round_trippers.go:431]     Authorization: Bearer <masked>
 I[MMdd] [TIME]        1 round_trippers.go:420] GET https://[TRIDENT_CONTROLLER_IP]/apis/snapshot.storage.k8s.io/v1beta1/volumesnapshotcontents?limit=500&resourceVersion=0
 I[MMdd] [TIME]        1 round_trippers.go:427] Request Headers:
 I[MMdd] [TIME]        1 round_trippers.go:431]     Accept: application/json, */*
 I[MMdd] [TIME]        1 round_trippers.go:431]     User-Agent: csi-snapshotter/v0.0.0 (linux/amd64) kubernetes/$Format
 I[MMdd] [TIME]        1 round_trippers.go:431]     Authorization: Bearer <masked>
 I[MMdd] [TIME]        1 round_trippers.go:446] Response Status: 404 Not Found in 6 milliseconds
 I[MMdd] [TIME]        1 round_trippers.go:449] Response Headers:
 I[MMdd] [TIME]        1 round_trippers.go:446] Response Status: 404 Not Found in 6 milliseconds
 I[MMdd] [TIME]        1 round_trippers.go:452]     Cache-Control: no-cache, private
 I[MMdd] [TIME]        1 round_trippers.go:449] Response Headers:
 I[MMdd] [TIME]        1 round_trippers.go:452]     Content-Type: text/plain; charset=utf-8
 I[MMdd] [TIME]        1 round_trippers.go:452]     X-Kubernetes-Pf-Flowschema-Uid: f978b7f4-c3f3-4736-aedc-36f873e2e698
 I[MMdd] [TIME]        1 round_trippers.go:452]     X-Content-Type-Options: nosniff
 I[MMdd] [TIME]        1 round_trippers.go:452]     X-Kubernetes-Pf-Prioritylevel-Uid: a26a1e9c-85a4-4742-8844-c44bd8d00267
 I[MMdd] [TIME]        1 round_trippers.go:452]     Content-Length: 19
 I[MMdd] [TIME]        1 round_trippers.go:452]     X-Kubernetes-Pf-Flowschema-Uid: f978b7f4-c3f3-4736-aedc-36f873e2e698
 I[MMdd] [TIME]        1 round_trippers.go:452]     X-Kubernetes-Pf-Prioritylevel-Uid: a26a1e9c-85a4-4742-8844-c44bd8d00267
 I[MMdd] [TIME]        1 round_trippers.go:452]     Date: Thu, 02 Jun 2022 07:28:17 GMT
 I[MMdd] [TIME]        1 round_trippers.go:452]     Cache-Control: no-cache, private
 I[MMdd] [TIME]        1 round_trippers.go:452]     Content-Type: text/plain; charset=utf-8
 I[MMdd] [TIME]        1 round_trippers.go:452]     X-Content-Type-Options: nosniff
 I[MMdd] [TIME]        1 request.go:1097] Response Body: 404 page not found
 I[MMdd] [TIME]        1 round_trippers.go:452]     Content-Length: 19
 I[MMdd] [TIME]        1 round_trippers.go:452]     Date: Thu, 02 Jun 2022 07:28:17 GMT
 I[MMdd] [TIME]        1 request.go:1097] Response Body: 404 page not found
 E[MMdd] [TIME]        1 reflector.go:127] github.com/kubernetes-csi/external-snapshotter/client/v3/informers/externalversions/factory.go:117: Failed to watch *v1beta1.VolumeSnapshotContent: failed to list *v1beta1.VolumeSnapshotContent: the server could not find the requested resource (get volumesnapshotcontents.snapshot.storage.k8s.io)
 E[MMdd] [TIME]        1 reflector.go:127] github.com/kubernetes-csi/external-snapshotter/client/v3/informers/externalversions/factory.go:117: Failed to watch *v1beta1.VolumeSnapshotClass: failed to list *v1beta1.VolumeSnapshotClass: the server could not find the requested resource (get volumesnapshotclasses.snapshot.storage.k8s.io)

このチェックは、それぞれのチェックで平均トップ30の40秒に繰り返され、trident-controller-sidecar-csi-snapshotterのログが数十メガバイトに肥大化します。

注：が round_trippers.go の実際の行番号はTridentのバージョンによって異なり、v1beta1とv1のどちらを使用するかというクラスのバージョンが使用されます（v1のスナップショットでは、元のクラスでV5が使用されます）。