191 lines
6.3 KiB
Plaintext
191 lines
6.3 KiB
Plaintext
[[repository-azure]]
|
|
=== Azure Repository Plugin
|
|
|
|
The Azure Repository plugin adds support for using Azure as a repository for
|
|
{ref}/modules-snapshots.html[Snapshot/Restore].
|
|
|
|
:plugin_name: repository-azure
|
|
include::install_remove.asciidoc[]
|
|
|
|
[[repository-azure-usage]]
|
|
==== Azure Repository
|
|
|
|
To enable Azure repositories, you have first to define your azure storage settings as
|
|
{ref}/secure-settings.html[secured settings]:
|
|
|
|
[source,sh]
|
|
----------------------------------------------------------------
|
|
bin/elasticsearch-keystore add azure.client.default.account
|
|
bin/elasticsearch-keystore add azure.client.default.key
|
|
----------------------------------------------------------------
|
|
|
|
Where `account` is the azure account name and `key` the azure secret key.
|
|
|
|
Note that you can also define more than one account:
|
|
|
|
[source,sh]
|
|
----------------------------------------------------------------
|
|
bin/elasticsearch-keystore add azure.client.default.account
|
|
bin/elasticsearch-keystore add azure.client.default.key
|
|
bin/elasticsearch-keystore add azure.client.secondary.account
|
|
bin/elasticsearch-keystore add azure.client.secondary.key
|
|
----------------------------------------------------------------
|
|
|
|
`default` is the default account name which will be used by a repository unless you set an explicit one.
|
|
|
|
You can set the client side timeout to use when making any single request. It can be defined globally, per account or both.
|
|
It's not set by default which means that elasticsearch is using the
|
|
http://azure.github.io/azure-storage-java/com/microsoft/azure/storage/RequestOptions.html#setTimeoutIntervalInMs(java.lang.Integer)[default value]
|
|
set by the azure client (known as 5 minutes).
|
|
|
|
`max_retries` can help to control the exponential backoff policy. It will fix the number of retries
|
|
in case of failures before considering the snapshot is failing. Defaults to `3` retries.
|
|
The initial backoff period is defined by Azure SDK as `30s`. Which means `30s` of wait time
|
|
before retrying after a first timeout or failure. The maximum backoff period is defined by Azure SDK as
|
|
`90s`.
|
|
|
|
`endpoint_suffix` can be used to specify Azure endpoint suffix explicitly. Defaults to `core.windows.net`.
|
|
|
|
[source,yaml]
|
|
----
|
|
azure.client.default.timeout: 10s
|
|
azure.client.default.max_retries: 7
|
|
azure.client.default.endpoint_suffix: core.chinacloudapi.cn
|
|
azure.client.secondary.timeout: 30s
|
|
----
|
|
|
|
In this example, timeout will be `10s` per try for `default` with `7` retries before failing
|
|
and endpoint suffix will be `core.chinacloudapi.cn` and `30s` per try for `secondary` with `3` retries.
|
|
|
|
[IMPORTANT]
|
|
.Supported Azure Storage Account types
|
|
===============================================
|
|
The Azure Repository plugin works with all Standard storage accounts
|
|
|
|
* Standard Locally Redundant Storage - `Standard_LRS`
|
|
* Standard Zone-Redundant Storage - `Standard_ZRS`
|
|
* Standard Geo-Redundant Storage - `Standard_GRS`
|
|
* Standard Read Access Geo-Redundant Storage - `Standard_RAGRS`
|
|
|
|
https://azure.microsoft.com/en-gb/documentation/articles/storage-premium-storage[Premium Locally Redundant Storage] (`Premium_LRS`) is **not supported** as it is only usable as VM disk storage, not as general storage.
|
|
===============================================
|
|
|
|
You can register a proxy per client using the following settings:
|
|
|
|
[source,yaml]
|
|
----
|
|
azure.client.default.proxy.host: proxy.host
|
|
azure.client.default.proxy.port: 8888
|
|
azure.client.default.proxy.type: http
|
|
----
|
|
|
|
Supported values for `proxy.type` are `direct` (default), `http` or `socks`.
|
|
When `proxy.type` is set to `http` or `socks`, `proxy.host` and `proxy.port` must be provided.
|
|
|
|
|
|
[[repository-azure-repository-settings]]
|
|
===== Repository settings
|
|
|
|
The Azure repository supports following settings:
|
|
|
|
`client`::
|
|
|
|
Azure named client to use. Defaults to `default`.
|
|
|
|
`container`::
|
|
|
|
Container name. You must create the azure container before creating the repository.
|
|
Defaults to `elasticsearch-snapshots`.
|
|
|
|
`base_path`::
|
|
|
|
Specifies the path within container to repository data. Defaults to empty
|
|
(root directory).
|
|
|
|
`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 `64m` (64m max)
|
|
|
|
`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`.
|
|
|
|
`readonly`::
|
|
|
|
Makes repository read-only. Defaults to `false`.
|
|
|
|
`location_mode`::
|
|
|
|
`primary_only` or `secondary_only`. Defaults to `primary_only`. Note that if you set it
|
|
to `secondary_only`, it will force `readonly` to true.
|
|
|
|
Some examples, using scripts:
|
|
|
|
[source,js]
|
|
----
|
|
# The simpliest one
|
|
PUT _snapshot/my_backup1
|
|
{
|
|
"type": "azure"
|
|
}
|
|
|
|
# With some settings
|
|
PUT _snapshot/my_backup2
|
|
{
|
|
"type": "azure",
|
|
"settings": {
|
|
"container": "backup-container",
|
|
"base_path": "backups",
|
|
"chunk_size": "32m",
|
|
"compress": true
|
|
}
|
|
}
|
|
|
|
|
|
# With two accounts defined in elasticsearch.yml (my_account1 and my_account2)
|
|
PUT _snapshot/my_backup3
|
|
{
|
|
"type": "azure",
|
|
"settings": {
|
|
"client": "secondary"
|
|
}
|
|
}
|
|
PUT _snapshot/my_backup4
|
|
{
|
|
"type": "azure",
|
|
"settings": {
|
|
"client": "secondary",
|
|
"location_mode": "primary_only"
|
|
}
|
|
}
|
|
----
|
|
// CONSOLE
|
|
// TEST[skip:we don't have azure setup while testing this]
|
|
|
|
Example using Java:
|
|
|
|
[source,java]
|
|
----
|
|
client.admin().cluster().preparePutRepository("my_backup_java1")
|
|
.setType("azure").setSettings(Settings.builder()
|
|
.put(Storage.CONTAINER, "backup-container")
|
|
.put(Storage.CHUNK_SIZE, new ByteSizeValue(32, ByteSizeUnit.MB))
|
|
).get();
|
|
----
|
|
|
|
[[repository-azure-validation]]
|
|
===== Repository validation rules
|
|
|
|
According to the http://msdn.microsoft.com/en-us/library/dd135715.aspx[containers naming guide], a container name must
|
|
be a valid DNS name, conforming to the following naming rules:
|
|
|
|
* Container names must start with a letter or number, and can contain only letters, numbers, and the dash (-) character.
|
|
* Every dash (-) character must be immediately preceded and followed by a letter or number; consecutive dashes are not
|
|
permitted in container names.
|
|
* All letters in a container name must be lowercase.
|
|
* Container names must be from 3 through 63 characters long.
|