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93 lines
4.6 KiB
Markdown
93 lines
4.6 KiB
Markdown
<!--[metadata]>
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+++
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title = "Extending Docker with plugins"
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description = "How to add additional functionality to Docker with plugins extensions"
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keywords = ["Examples, Usage, plugins, docker, documentation, user guide"]
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[menu.main]
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parent = "mn_extend"
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weight=-1
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<![end-metadata]-->
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# Understand Docker plugins
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You can extend the capabilities of the Docker Engine by loading third-party
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plugins. This page explains the types of plugins and provides links to several
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volume and network plugins for Docker.
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## Types of plugins
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Plugins extend Docker's functionality. They come in specific types. For
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example, a [volume plugin](plugins_volume.md) might enable Docker
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volumes to persist across multiple Docker hosts and a
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[network plugin](plugins_network.md) might provide network plumbing.
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Currently Docker supports volume and network driver plugins. In the future it
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will support additional plugin types.
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## Installing a plugin
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Follow the instructions in the plugin's documentation.
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## Finding a plugin
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The following plugins exist:
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* The [Blockbridge plugin](https://github.com/blockbridge/blockbridge-docker-volume)
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is a volume plugin that provides access to an extensible set of
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container-based persistent storage options. It supports single and multi-host Docker
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environments with features that include tenant isolation, automated
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provisioning, encryption, secure deletion, snapshots and QoS.
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* The [Convoy plugin](https://github.com/rancher/convoy) is a volume plugin for a
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variety of storage back-ends including device mapper and NFS. It's a simple standalone
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executable written in Go and provides the framework to support vendor-specific extensions
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such as snapshots, backups and restore.
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* The [Flocker plugin](https://clusterhq.com/docker-plugin/) is a volume plugin
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which provides multi-host portable volumes for Docker, enabling you to run
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databases and other stateful containers and move them around across a cluster
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of machines.
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* The [GlusterFS plugin](https://github.com/calavera/docker-volume-glusterfs) is
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another volume plugin that provides multi-host volumes management for Docker
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using GlusterFS.
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* The [Keywhiz plugin](https://github.com/calavera/docker-volume-keywhiz) is
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a plugin that provides credentials and secret management using Keywhiz as
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a central repository.
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* The [Netshare plugin](https://github.com/gondor/docker-volume-netshare) is a volume plugin
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that provides volume management for NFS 3/4, AWS EFS and CIFS file systems.
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* The [OpenStorage Plugin](https://github.com/libopenstorage/openstorage) is a cluster aware volume plugin that provides volume management for file and block storage solutions. It implements a vendor neutral specification for implementing extensions such as CoS, encryption, and snapshots. It has example drivers based on FUSE, NFS, NBD and EBS to name a few.
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* The [Pachyderm PFS plugin](https://github.com/pachyderm/pachyderm/tree/master/src/cmd/pfs-volume-driver)
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is a volume plugin written in Go that provides functionality to mount Pachyderm File System (PFS)
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repositories at specific commits as volumes within Docker containers.
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* The [REX-Ray plugin](https://github.com/emccode/rexraycli) is a volume plugin
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which is written in Go and provides advanced storage functionality for many
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platforms including EC2, OpenStack, XtremIO, and ScaleIO.
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* The [Contiv Volume Plugin](https://github.com/contiv/volplugin) is an open
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source volume plugin that provides multi-tenant, persistent, distributed storage
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with intent based consumption using ceph underneath.
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* The [Contiv Networking](https://github.com/contiv/netplugin) is an open source
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libnetwork plugin to provide infrastructure and security policies for a
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multi-tenant micro services deployment, while providing an integration to
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physical network for non-container workload. Contiv Networking implements the
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remote driver and IPAM APIs available in Docker 1.9 onwards.
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* The [Weave Network Plugin](https://github.com/weaveworks/docker-plugin) creates a virtual network that connects your Docker containers - across multiple hosts or clouds and enables automatic discovery of applications. Weave networks are resilient, partition tolerant, secure and work in partially connected networks, and other adverse environments - all configured with delightful simplicity.
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## Troubleshooting a plugin
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If you are having problems with Docker after loading a plugin, ask the authors
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of the plugin for help. The Docker team may not be able to assist you.
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## Writing a plugin
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If you are interested in writing a plugin for Docker, or seeing how they work
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under the hood, see the [docker plugins reference](plugin_api.md).
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