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Archive Topic Map

Storage

Storage is slow to change and expensive to get wrong. Learn binding, provisioning controllers, and the constraints that govern state.

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Orientation

A curated shelf for study and for retrieval.

State is an operational contract

The cluster does not ‘store data’. It orchestrates storage backends through CSI. The guarantees you get depend on driver behavior, topology, and the reality of failure domains.

PVC Pending is not a transient annoyance. It is a binding failure that will block workloads until you prove why it cannot be satisfied.

  • Understand access modes and what your backend can actually provide.
  • Treat StorageClass defaults as governance, not convenience.
  • Align zones: pods and volumes must be able to meet in the same failure domain.

Core texts

Persistence, identity, and the costs of state.

Text

Codex Gigas

CSI and the Persistence of State

Drivers, controllers, and the real boundaries of persistence in clusters.

Text

Codex Gigas

StatefulSets and the Burden of Memory

Identity, stable network names, and orderly rollouts for state.

Practice and diagnostics

Binding failures, events, and safe unblocking patterns.

Atlas

Troubleshoot

PVC Pending (Storage)

StorageClass defaults, provisioner health, access modes, topology constraints.

Lab

Lab

PVC Pending (Provisioning Discipline)

Read events and align the claim with the cluster’s provisioning posture.

Related maps

Adjacent shelves for continued study.

Topic map

Map

Workloads

Continue with the adjacent shelf.

Topic map

Map

Operations

Continue with the adjacent shelf.

Topic map

Map

Troubleshooting

Continue with the adjacent shelf.

Canonical link

Canonical URL: /library/topics/storage