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Guidance on managing storage in Google Kubernetes Engine (GKE) clusters.
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SOC 職業分類に基づく
Systematically diagnose GKE JobSet interruptions, restarts, and preemptions for AI/ML training workloads. Identifies preemption events, maintenance interruptions, bad host VMs, unhealthy pods, and coordinator worker failures.
Diagnose and predict node disruption during Compute Engine host maintenance for GPU and TPU workloads.
Diagnose and prevent `vbar_control_agent` segfaults and OOMs caused by race conditions during TPU device resets and frequent metrics collection (e.g. every 3s). Use when TPU slice initialization fails or `vbar_control_agent` crashes on TPU v6e nodes.
Verifies if a GKE or Kubernetes cluster is unused (no active compute, external exposure, or persistent data) before allowing deletion. Evaluates external exposure (LoadBalancer Service, Ingress, Gateway, MultiClusterIngress), persistent data (Bound PVC), and active compute (Running/Pending Pods in user namespaces) with low-overhead queries and fail-close timeouts.
Monitor and manage GKE TPU Dynamic Slices custom resources. Use when checking slice lifecycle states, troubleshooting failed slice creations (e.g. SliceCreationFailed, FAILED), running single or multi-slice workloads, or safely deleting/disabling slices.
Monitor and troubleshoot GKE TPU workloads using GKE system metrics and PromQL.
| name | gke-storage |
| description | Guidance on managing storage in Google Kubernetes Engine (GKE) clusters. |
This skill provides guidance on managing storage in Google Kubernetes Engine (GKE) clusters.
GKE supports various storage options, from Persistent Disks to Cloud Storage. Choosing the right storage type and configuring it correctly is essential for performance and reliability.
StorageClasses allow you to describe the "classes" of storage you offer. Different classes might map to quality-of-service levels, or to backup policies.
Example StorageClass Manifest:
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: premium-rwo
provisioner: pd.csi.storage.gke.io
parameters:
type: pd-ssd
replication-type: regional-pd
volumeBindingMode: WaitForFirstConsumer
allowVolumeExpansion: true
Setting allowVolumeExpansion: true is highly recommended for production.
GKE includes container storage interface (CSI) drivers for dynamic provisioning of storage.
Example using Filestore CSI Driver:
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: filestore-pvc
spec:
accessModes:
- ReadWriteMany
storageClassName: standard-rwm # Pre-defined for Filestore
resources:
requests:
storage: 1Ti
If allowVolumeExpansion is true in the StorageClass, you can resize a volume by updating the PVC manifest.
Steps:
Kubernetes will automatically resize the file system on the volume.
allowVolumeExpansion: true in your StorageClasses to allow for growth.pd-ssd or pd-extreme for I/O intensive workloads, and pd-standard or pd-balanced for others.