A StatefulSet is the workload API object used to manage stateful applications. It manages the deployment and scaling of a set of Pods, and provides guarantees about the ordering and uniqueness of these Pods.
kubectl apply -f statefulset.yaml
Persistent Volumes (PVs) are a storage resource in the cluster that can be used by pods. PVs are independent of the pod lifecycle.
kubectl get pv
Persistent Volume Claims (PVCs) are requests for storage by a user. Pods use PVCs to request storage resources.
kubectl apply -f pvc.yaml
Scaling stateful applications requires careful management to ensure the state is consistent across replicas.
kubectl scale statefulset my-app --replicas=3
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