在弹性集群模式下创建Java RestHighLevelClient [英] Create java RestHighLevelClient in elastic cluster mode

问题描述

如果elasticsearch在单一模式下运行，我可以使用以下代码轻松建立RestHighLevel连接:

If elasticsearch runs on single mode, I can easily establish the RestHighLevel connection with this line of code:

RestHighLevelClient client = new RestHighLevelClient(
    RestClient.builder(
            new HttpHost("localhost", 9200, "http"),
            new HttpHost("localhost", 9201, "http")));

但是如果我的弹性集群有3台计算机，例如"host1"，"host2"，"host3"，如何在集群模式下创建其余的高级客户端?

But if my elastic cluster has 3 machines, e.g., "host1", "host2", "host3", how to create the rest high level client in cluster mode ?

谢谢

推荐答案

要使用多个主机创建高级REST客户端，您可以执行以下操作:

To create High level REST client using multiple hosts, you can do something like following:

String[] esHosts = new String[]{"node1-example.com:9200", "node2-example.com:9200", 
    "node3-example.com:9200"};

final ClientConfiguration clientConfiguration = ClientConfiguration.builder()
    .connectedTo(esHosts)
    .build();

RestHighLevelClient restClient = RestClients.create(clientConfiguration).rest();

// Hostnames used for building client can be verified as following
List<Node> nodes = restClient.getLowLevelClient().getNodes();
nodes.forEach(node -> System.out.println(node.toString()));

参考文献:

• 高级文档REST客户端
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