Storage in Contiv
Contiv Storage: Cluster-Wide Volume Management for Containers
Introduction
Contiv Storage controls Ceph Rados block devices (RBDs) in a way that is easy for developers to use with Docker and flexible for ops to configure. Reference volumes with Docker from anywhere Ceph is available; the volumes are located and mounted. Contiv Storage works well with Docker Compose and Swarm.
Contiv Storage profiles make instantiating similar class volumes easy. With profiles, you can:
- Give your development teams full-stack development environments (complete with state) that arrive on demand.
- Scale your stateful containers quickly with our snapshot functionality. One CLI command captures the volume, and you can refer to anywhere, immediately.
- Recover from crashed containers and hosts. Just re-initialize your container on another host with the same volume name.
Contiv Storage currently only supports Docker volume plugins. It provides first-class scheduler support for Kubernetes. Support for Mesos will be available before the first stable release.
Contiv Storage uses a master/slave model to support a number of features, such as:
- On-the-fly image creation and (re)mount from any Ceph source, by referencing a policy and volume name.
- Manage many kinds of filesystems, including providing
mkfscommands. - Snapshot frequency and pruning. Copying snapshots to new volumes.
- Ephemeral (removed on container teardown) volumes.
- IOPS limiting.