Java 如何连接到 AWS Elasticsearch？
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How to connect to AWS Elasticsearch?
提问by Fabian Lurz
I'm trying to connect to AWS Elasticsearch but I always get the following error:
我正在尝试连接到 AWS Elasticsearch，但总是收到以下错误：
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)
My code is following:
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;
Output from AWS Elasticsearch:
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"
}
I tried to curl (https://search-zencubes-search-xxxxxxxx.eu-west-1.es.amazonaws.com/) and it works - but not on port 9300. What am I doing wrong here?
我试图卷曲（https://search-zencubes-search-xxxxxxxx.eu-west-1.es.amazonaws.com/）并且它有效 - 但不在端口 9300 上。我在这里做错了什么？
采纳答案by John Russell
The native transport protocol is not support using AWS Managed ElasticSearch and is only available over the REST endpoint. Consider switching your client to consume the REST endpoint, such as https://github.com/searchbox-io/Jest.
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。考虑切换客户端以使用 REST 端点，例如https://github.com/searchbox-io/Jest。
Source: https://forums.aws.amazon.com/thread.jspa?messageID=681938
来源：https: //forums.aws.amazon.com/thread.jspa?messageID=681938
回答by Ivan Krumov
As John Russell said above, you need to use a REST client to communicate with your AWS Elastic cluster.
正如 John Russell 上面所说，您需要使用 REST 客户端与您的 AWS Elastic 集群进行通信。
Elastic recently released the first RC version of its own Java REST client, so this is an option now as well.
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。
Client Docs: https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/index.html
客户端文档：https: //www.elastic.co/guide/en/elasticsearch/client/java-rest/current/index.html
Maven Repo: http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.elasticsearch.client%22%20AND%20a%3A%22rest%22
Maven 仓库：http: //search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.elasticsearch.client%22%20AND%20a%3A%22rest%22
回答by H6.
Since the Elasticsearch Java SDK version 5.6there is a REST Clientavailable. This allows you to connect to Elasticsearch Service on AWS.
从 Elasticsearch Java SDK 版本 5.6 开始，有一个REST 客户端可用。这允许您连接到 AWS 上的 Elasticsearch Service。
Currently Elasticsearch Service allows installations up to version 5.5, but you can use the 5.6 Java SDK against a 5.5 cluster with minor limitations.
目前 Elasticsearch Service 允许安装到 5.5 版本，但您可以对 5.5 集群使用 5.6 Java SDK，但有一些限制。
Note: When initializing the RestClientyou should use the port 80or 443respectively instead of the 9200. E.g.
注意：在初始化 时，RestClient您应该分别使用端口80或443代替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);
// [...]
