如何连接到 AWS Elasticsearch？

Question

我正在尝试连接到 AWS Elasticsearch，但我总是收到以下错误：

Exception in thread "main" org.elasticsearch.client.transport.NoNodeAvailableException: None of the configured nodes are available: []
at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:278)
at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:197)
at org.elasticsearch.client.transport.support.InternalTransportClient.execute(InternalTransportClient.java:106)
at org.elasticsearch.client.support.AbstractClient.index(AbstractClient.java:98)
at org.elasticsearch.client.transport.TransportClient.index(TransportClient.java:334)
at org.elasticsearch.action.index.IndexRequestBuilder.doExecute(IndexRequestBuilder.java:313)
at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:91)
at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:65)
at com.c_backendcrawler.utility.ElasticSearch.uploadObject(ElasticSearch.java:25)
at com.c_backendcrawler.Start.main(Start.java:34)

我的代码如下：

 //Create Client
    Settings settings = ImmutableSettings.settingsBuilder().put("cluster.name", "zencubes-search").put("node.name","Darkhawk").build();
    TransportClient transportClient = new TransportClient(settings);
    transportClient.addTransportAddress(new InetSocketTransportAddress(
            "x.x.x.x",9300));
    return transportClient;

AWS Elasticsearch 的输出：

    {
status: 200,
name: "Darkhawk",
cluster_name: "817880037706:zencubes-search",
version: {
number: "1.5.2",
build_hash: "62ff9868b4c8a0c45860bebb259e21980778ab1c",
build_timestamp: "2015-04-27T09:21:06Z",
build_snapshot: false,
lucene_version: "4.10.4"
},
tagline: "You Know, for Search"
}

我尝试卷曲 (https://search-zencubes-search-xxxxxxxx.eu-west-1.es.amazonaws.com/ ) 并且它有效 - 但在端口 9300 上无效。我在这里做错了什么？

Answer 1

本机传输协议不支持使用 AWS Managed ElasticSearch，并且只能通过 REST 端点使用。考虑切换您的客户端以使用 REST 端点，例如 https://github.com/searchbox-io/Jest.

来源：https://forums.aws.amazon.com/thread.jspa?messageID=681938

Answer 2

正如 John Russell 上面所说，您需要使用 REST 客户端与您的 AWS Elastic 集群通信。

Elastic 最近发布了它自己的 Java REST 客户端的第一个 RC 版本，所以现在这也是一个选项。

客户文档： https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/index.html

Maven 回购： http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.elasticsearch.client%22%20AND%20a%3A%22rest%22

Answer 3

Since the Elasticsearch Java SDK version 5.6 there is a REST Client 可用。这允许您连接到 AWS 上的 Elasticsearch 服务。

目前 Elasticsearch Service 允许安装最高版本 5.5，但您可以针对 5.5 集群使用 5.6 Java SDK，但有一些小限制。

注意: 初始化RestClient时你应该分别使用端口80或443而不是9200 .例如

RestClient restClient = RestClient.builder(
    new HttpHost("search-test-elasti-xxxx-xxxxx.us-east-1.es.amazonaws.com", 80, "http")).build();
RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClient); 
// [...]

Answer 4

如何获取 AWS ES URL

转到 Elasticsearch 域控制台并在概览选项卡中获取端点。

要使用的端口是 443。

确保已配置访问控制。

Options for granting or denying access to Amazon ES endpoints

仅供参考

创建 Elasticsearch 索引

curl -v -XPUT "${ES_ENDPOINT}/article/" -H 'Content-Type: application/json' -d '{
    "settings" : {
        "index" : {
            "number_of_shards" : 1,
            "number_of_replicas" : 0
        }
    }
}'

如何连接到 AWS Elasticsearch？

How to connect to AWS Elasticsearch?

java

amazon-web-services

elasticsearch

amazon-elasticsearch

如何获取 AWS ES URL

仅供参考

创建 Elasticsearch 索引