Atomic Storage Clients

Summary

Kubernetes provides a mechanism for providing storage to containers called Persistent Volumes. Persistent Volumes support several underlying storage protocols, but clients are needed to support each type. Native GlusterFS and Ceph clients will be added to the Atomic host base to support new Persistent Volume types.

Owner

Name: mmicene
Email: nzwulfin@gmail.com
Release notes owner:

Current status

Targeted release: Fedora 24
Last updated: 2016-01-06
Tracker bug: <will be assigned by the Wrangler>

Detailed Description

By design, Docker container internal storage is ephemeral in nature and data is lost when a container is stopped. Kubernetes uses Persistent Volumes to provide a means for containers to keep data for extended periods of time and between restarts.

A Persistent Volume (PV) in Kubernetes represents a real piece of underlying storage capacity in the infrastructure. Persistent volumes are intended for "network volumes" like NFS shares, GlusterFS volumes, or Ceph devices.

In order to access the underlying storage, the appropriate drivers must be available to Kubernetes on the Atomic host. We will add the appropriate packages to support the following Persistent Volume types:

GlusterFS
Ceph

Benefit to Fedora

Better support for Kubernetes

Scope

Proposal owners:

Other developers: N/A (not a System Wide Change)

Release engineering: N/A (not a System Wide Change)
- List of deliverables: N/A (not a System Wide Change)

Policies and guidelines: N/A (not a System Wide Change)

Trademark approval: N/A (not needed for this Change)