registry/docs/storage-drivers/gcs.md
Mary Anthony cab284d6b2 - Pulling driver specs out of configuruation.md
- Fixing index metadata error
- Entering all the comments
- Updating with the build fixes
- Fix Microsoft link broken
- Fix collocate, colocate, to unambiguous co-locate

Signed-off-by: Mary Anthony <mary@docker.com>
2016-01-21 10:12:46 -08:00

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Markdown

<!--[metadata]>
+++
title = "GCS storage driver"
description = "Explains how to use the Google Cloud Storage drivers"
keywords = ["registry, service, driver, images, storage, gcs, google, cloud"]
+++
<![end-metadata]-->
# Google Cloud Storage driver
An implementation of the `storagedriver.StorageDriver` interface which uses Google Cloud for object storage.
## Parameters
<table>
<tr>
<th>Parameter</th>
<th>Required</th>
<th>Description</th>
</tr>
<tr>
<td>
<code>bucket</code>
</td>
<td>
yes
</td>
<td>
Storage bucket name.
</td>
</tr>
<tr>
<td>
<code>keyfile</code>
</td>
<td>
no
</td>
<td>
A private service account key file in JSON format. Instead of a key file <a href="https://developers.google.com/identity/protocols/application-default-credentials">Google Application Default Credentials</a> can be used.
</td>
</tr>
<tr>
<td>
<code>rootdirectory</code>
</td>
<td>
no
</td>
<td>
This is a prefix that will be applied to all Google Cloud Storage keys to allow you to segment data in your bucket if necessary.
</tr>
</table>
`bucket`: The name of your Google Cloud Storage bucket where you wish to store objects (needs to already be created prior to driver initialization).
`keyfile`: (optional) A private key file in JSON format, used for [Service Account Authentication](https://cloud.google.com/storage/docs/authentication#service_accounts).
**Note** Instead of a key file you can use [Google Application Default Credentials](https://developers.google.com/identity/protocols/application-default-credentials).
`rootdirectory`: (optional) The root directory tree in which all registry files will be stored. Defaults to the empty string (bucket root).