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| title | id | date | full_link | short_description | aka | tags | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| StatefulSet | statefulset | 2018-04-12 | /docs/concepts/workloads/controllers/statefulset/ | Manages deployment and scaling of a set of Pods, with durable storage and persistent identifiers for each Pod. |
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Manages the deployment and scaling of a set of {{< glossary_tooltip text="Pods" term_id="pod" >}}, and provides guarantees about the ordering and uniqueness of these Pods.
Like a {{< glossary_tooltip term_id="deployment" >}}, a StatefulSet manages Pods that are based on an identical container spec. Unlike a Deployment, a StatefulSet maintains a sticky identity for each of their Pods. These pods are created from the same spec, but are not interchangeable: each has a persistent identifier that it maintains across any rescheduling.
If you want to use storage volumes to provide persistence for your workload, you can use a StatefulSet as part of the solution. Although individual Pods in a StatefulSet are susceptible to failure, the persistent Pod identifiers make it easier to match existing volumes to the new Pods that replace any that have failed.