DockerCLI/docs/extend/plugins.md

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title = "Extending Docker with plugins"
description = "How to add additional functionality to Docker with plugins extensions"
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# Understand Docker plugins
You can extend the capabilities of the Docker Engine by loading third-party
plugins.
## Types of plugins
Plugins extend Docker's functionality. They come in specific types. For
example, a [volume plugin](plugins_volume.md) might enable Docker
volumes to persist across multiple Docker hosts and a
[network plugin](plugins_network.md) might provide network plumbing
using a favorite networking technology, such as vxlan overlay, ipvlan, EVPN, etc.
Currently Docker supports volume and network driver plugins. In the future it
will support additional plugin types.
## Installing a plugin
Follow the instructions in the plugin's documentation.
## Finding a plugin
The following plugins exist:
* The [Blockbridge plugin](https://github.com/blockbridge/blockbridge-docker-volume)
is a volume plugin that provides access to an extensible set of
container-based persistent storage options. It supports single and multi-host Docker
environments with features that include tenant isolation, automated
provisioning, encryption, secure deletion, snapshots and QoS.
* The [Convoy plugin](https://github.com/rancher/convoy) is a volume plugin for a
variety of storage back-ends including device mapper and NFS. It's a simple standalone
executable written in Go and provides the framework to support vendor-specific extensions
such as snapshots, backups and restore.
* The [Flocker plugin](https://clusterhq.com/docker-plugin/) is a volume plugin
which provides multi-host portable volumes for Docker, enabling you to run
databases and other stateful containers and move them around across a cluster
of machines.
* The [GlusterFS plugin](https://github.com/calavera/docker-volume-glusterfs) is
another volume plugin that provides multi-host volumes management for Docker
using GlusterFS.
* The [Keywhiz plugin](https://github.com/calavera/docker-volume-keywhiz) is
a plugin that provides credentials and secret management using Keywhiz as
a central repository.
* The [Netshare plugin](https://github.com/gondor/docker-volume-netshare) is a volume plugin
that provides volume management for NFS 3/4, AWS EFS and CIFS file systems.
* The [Pachyderm PFS plugin](https://github.com/pachyderm/pachyderm/tree/master/src/cmd/pfs-volume-driver)
is a volume plugin written in Go that provides functionality to mount Pachyderm File System (PFS)
repositories at specific commits as volumes within Docker containers.
* The [REX-Ray plugin](https://github.com/emccode/rexraycli) is a volume plugin
which is written in Go and provides advanced storage functionality for many
platforms including EC2, OpenStack, XtremIO, and ScaleIO.
## Troubleshooting a plugin
If you are having problems with Docker after loading a plugin, ask the authors
of the plugin for help. The Docker team may not be able to assist you.
## Writing a plugin
If you are interested in writing a plugin for Docker, or seeing how they work
under the hood, see the [docker plugins reference](plugin_api.md).