182 lines
6.5 KiB
Plaintext
182 lines
6.5 KiB
Plaintext
[[repository-gcs]]
|
|
=== Google Cloud Storage Repository Plugin
|
|
|
|
The GCS repository plugin adds support for using the https://cloud.google.com/storage/[Google Cloud Storage]
|
|
service as a repository for {ref}/modules-snapshots.html[Snapshot/Restore].
|
|
|
|
:plugin_name: repository-gcs
|
|
include::install_remove.asciidoc[]
|
|
|
|
[[repository-gcs-usage]]
|
|
==== Getting started
|
|
|
|
The plugin uses the https://cloud.google.com/storage/docs/json_api/[Google Cloud Storage JSON API] (v1)
|
|
to connect to the Storage service. If this is the first time you use Google Cloud Storage, you first
|
|
need to connect to the https://console.cloud.google.com/[Google Cloud Platform Console] and create a new
|
|
project. Once your project is created, you must enable the Cloud Storage Service for your project.
|
|
|
|
[[repository-gcs-creating-bucket]]
|
|
===== Creating a Bucket
|
|
|
|
Google Cloud Storage service uses the concept of https://cloud.google.com/storage/docs/key-terms[Bucket]
|
|
as a container for all the data. Buckets are usually created using the
|
|
https://console.cloud.google.com/[Google Cloud Platform Console]. The plugin will not automatically
|
|
create buckets.
|
|
|
|
To create a new bucket:
|
|
|
|
1. Connect to the https://console.cloud.google.com/[Google Cloud Platform Console]
|
|
2. Select your project
|
|
3. Got to the https://console.cloud.google.com/storage/browser[Storage Browser]
|
|
4. Click the "Create Bucket" button
|
|
5. Enter a the name of the new bucket
|
|
6. Select a storage class
|
|
7. Select a location
|
|
8. Click the "Create" button
|
|
|
|
The bucket should now be created.
|
|
|
|
[[repository-gcs-service-authentication]]
|
|
===== Service Authentication
|
|
|
|
The plugin supports two authentication modes:
|
|
|
|
* The built-in <<repository-gcs-using-compute-engine, Compute Engine authentication>>. This mode is
|
|
recommended if your Elasticsearch node is running on a Compute Engine virtual machine.
|
|
|
|
* Specifying <<repository-gcs-using-service-account, Service Account>> credentials.
|
|
|
|
[[repository-gcs-using-compute-engine]]
|
|
===== Using Compute Engine
|
|
When running on Compute Engine, the plugin use Google's built-in authentication mechanism to
|
|
authenticate on the Storage service. Compute Engine virtual machines are usually associated to a
|
|
default service account. This service account can be found in the VM instance details in the
|
|
https://console.cloud.google.com/compute/[Compute Engine console].
|
|
|
|
This is the default authentication mode and requires no configuration.
|
|
|
|
NOTE: The Compute Engine VM must be allowed to use the Storage service. This can be done only at VM
|
|
creation time, when "Storage" access can be configured to "Read/Write" permission. Check your
|
|
instance details at the section "Cloud API access scopes".
|
|
|
|
[[repository-gcs-using-service-account]]
|
|
===== Using a Service Account
|
|
If your Elasticsearch node is not running on Compute Engine, or if you don't want to use Google's
|
|
built-in authentication mechanism, you can authenticate on the Storage service using a
|
|
https://cloud.google.com/iam/docs/overview#service_account[Service Account] file.
|
|
|
|
To create a service account file:
|
|
1. Connect to the https://console.cloud.google.com/[Google Cloud Platform Console]
|
|
2. Select your project
|
|
3. Got to the https://console.cloud.google.com/permissions[Permission] tab
|
|
4. Select the https://console.cloud.google.com/permissions/serviceaccounts[Service Accounts] tab
|
|
5. Click on "Create service account"
|
|
6. Once created, select the new service account and download a JSON key file
|
|
|
|
A service account file looks like this:
|
|
|
|
[source,js]
|
|
----
|
|
{
|
|
"type": "service_account",
|
|
"project_id": "your-project-id",
|
|
"private_key_id": "...",
|
|
"private_key": "-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----\n",
|
|
"client_email": "service-account-for-your-repository@your-project-id.iam.gserviceaccount.com",
|
|
"client_id": "...",
|
|
"auth_uri": "https://accounts.google.com/o/oauth2/auth",
|
|
"token_uri": "https://accounts.google.com/o/oauth2/token",
|
|
"auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
|
|
"client_x509_cert_url": "..."
|
|
}
|
|
----
|
|
// NOTCONSOLE
|
|
|
|
This file must be stored in the {ref}/secure-settings.html[elasticsearch keystore], under a setting name
|
|
of the form `gcs.client.NAME.credentials_file`, where `NAME` is the name of the client configuration.
|
|
The default client name is `default`, but a different client name can be specified in repository
|
|
settings using `client`.
|
|
|
|
For example, if specifying the credentials file in the keystore under
|
|
`gcs.client.my_alternate_client.credentials_file`, you can configure a repository to use these
|
|
credentials like this:
|
|
|
|
[source,js]
|
|
----
|
|
PUT _snapshot/my_gcs_repository
|
|
{
|
|
"type": "gcs",
|
|
"settings": {
|
|
"bucket": "my_bucket",
|
|
"client": "my_alternate_client"
|
|
}
|
|
}
|
|
----
|
|
// CONSOLE
|
|
// TEST[skip:we don't have gcs setup while testing this]
|
|
|
|
[[repository-gcs-bucket-permission]]
|
|
===== Set Bucket Permission
|
|
|
|
The service account used to access the bucket must have the "Writer" access to the bucket:
|
|
|
|
1. Connect to the https://console.cloud.google.com/[Google Cloud Platform Console]
|
|
2. Select your project
|
|
3. Got to the https://console.cloud.google.com/storage/browser[Storage Browser]
|
|
4. Select the bucket and "Edit bucket permission"
|
|
5. The service account must be configured as a "User" with "Writer" access
|
|
|
|
|
|
[[repository-gcs-repository]]
|
|
==== Create a Repository
|
|
|
|
Once everything is installed and every node is started, you can create a new repository that
|
|
uses Google Cloud Storage to store snapshots:
|
|
|
|
[source,js]
|
|
----
|
|
PUT _snapshot/my_gcs_repository
|
|
{
|
|
"type": "gcs",
|
|
"settings": {
|
|
"bucket": "my_bucket"
|
|
}
|
|
}
|
|
----
|
|
// CONSOLE
|
|
// TEST[skip:we don't have gcs setup while testing this]
|
|
|
|
The following settings are supported:
|
|
|
|
`bucket`::
|
|
|
|
The name of the bucket to be used for snapshots. (Mandatory)
|
|
|
|
`client`::
|
|
|
|
The client congfiguration to use. This controls which credentials are used to connect
|
|
to Compute Engine.
|
|
|
|
`base_path`::
|
|
|
|
Specifies the path within bucket to repository data. Defaults to
|
|
the root of the bucket.
|
|
|
|
`chunk_size`::
|
|
|
|
Big files can be broken down into chunks during snapshotting if needed.
|
|
The chunk size can be specified in bytes or by using size value notation,
|
|
i.e. `1g`, `10m`, `5k`. Defaults to `100m`.
|
|
|
|
`compress`::
|
|
|
|
When set to `true` metadata files are stored in compressed format. This
|
|
setting doesn't affect index files that are already compressed by default.
|
|
Defaults to `false`.
|
|
|
|
`application_name`::
|
|
|
|
Name used by the plugin when it uses the Google Cloud JSON API. Setting
|
|
a custom name can be useful to authenticate your cluster when requests
|
|
statistics are logged in the Google Cloud Platform. Default to `repository-gcs`
|