Storage in Kubernetes
- Storage and stateful workloads are harder in all systems
- Containers make it both harder and easier than before
- StatefulSets is a new resource type, making Pods more sticky
- Avoid stateful deployments for first few deployments until you're good at the basics
- Use Database-as-a-Service whenever you can
- Creating and connecting volumes: 2 types
- Volumes
- Tied to a lifecycle of a Pod
- All containers in a single pod can share them
- PersistentVolumes / PersistentVolumeClaims
- Created at a cluster level, outlives a Pod
- Separates a storage config from Pod using it
- Multiple Pods can share them
- CSI (Container Storage Interface) plugins are the new way to connect to storage
Last modified 3yr ago