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IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Java REST Client [7.14] ›Java Low Level REST Client ›Common configuration

Other authentication methods

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Other authentication methods

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Elasticsearch Token Service tokens

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If you want the client to authenticate with an Elasticsearch access token, set the relevant HTTP request header. If the client makes requests on behalf of a single user only, you can set the necessary Authorization header as a default header as shown in the following example:

RestClientBuilder builder = RestClient.builder(
    new HttpHost("localhost", 9200, "http"));
Header[] defaultHeaders =
    new Header[]{new BasicHeader("Authorization",
        "Bearer u6iuAxZ0RG1Kcm5jVFI4eU4tZU9aVFEwT2F3")};
builder.setDefaultHeaders(defaultHeaders);

Elasticsearch API keys

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If you want the client to authenticate with an Elasticsearch API key, set the relevant HTTP request header. If the client makes requests on behalf of a single user only, you can set the necessary Authorization header as a default header as shown in the following example:

String apiKeyId = "uqlEyn8B_gQ_jlvwDIvM";
String apiKeySecret = "HxHWk2m4RN-V_qg9cDpuX";
String apiKeyAuth =
    Base64.getEncoder().encodeToString(
        (apiKeyId + ":" + apiKeySecret)
            .getBytes(StandardCharsets.UTF_8));
RestClientBuilder builder = RestClient.builder(
    new HttpHost("localhost", 9200, "http"));
Header[] defaultHeaders =
    new Header[]{new BasicHeader("Authorization",
        "ApiKey " + apiKeyAuth)};
builder.setDefaultHeaders(defaultHeaders);
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