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Elasticsearch Plugins and Integrations [6.2] » Snapshot/Restore Repository Plugins » S3 Repository Plugin » Client Settings
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Client Settingsedit

The client used to connect to S3 has a number of settings available. Client setting names are of the form s3.client.CLIENT_NAME.SETTING_NAME and specified inside elasticsearch.yml. The default client name looked up by an s3 repository is called default, but can be customized with the repository setting client. For example:

PUT _snapshot/my_s3_repository
{
  "type": "s3",
  "settings": {
    "bucket": "my_bucket",
    "client": "my_alternate_client"
  }
}

Some settings are sensitive and must be stored in the elasticsearch keystore. For example, to use explicit AWS access keys:

bin/elasticsearch-keystore add s3.client.default.access_key
bin/elasticsearch-keystore add s3.client.default.secret_key

The following are the available client settings. Those that must be stored in the keystore are marked as Secure.

access_key
An s3 access key. The secret_key setting must also be specified. (Secure)
secret_key
An s3 secret key. The access_key setting must also be specified. (Secure)
endpoint
The s3 service endpoint to connect to. This will be automatically figured out by the s3 client based on the bucket location, but can be specified explicitly. See http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region.
protocol
The protocol to use to connect to s3. Valid values are either http or https. Defaults to https.
proxy.host
The host name of a proxy to connect to s3 through.
proxy.port
The port of a proxy to connect to s3 through.
proxy.username
The username to connect to the proxy.host with. (Secure)
proxy.password
The password to connect to the proxy.host with. (Secure)
read_timeout
The socket timeout for connecting to s3. The value should specify the unit. For example, a value of 5s specifies a 5 second timeout. The default value is 50 seconds.
max_retries
The number of retries to use when an s3 request fails. The default value is 3.
use_throttle_retries
Whether retries should be throttled (ie use backoff). Must be true or false. Defaults to true.
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