java - 通过 Java/Spring Boot 连接到 Docker Elasticsearch 实例

Question

我正在从 Docker 运行 Elasticsearch 实例。图片来自 jHipster docker hub repo:jhipster/jhipster-elasticsearch/ - 我正在使用图像 v1.3.2，因为我需要 Elasticsearch 2.4.0(以与项目的 Spring Boot 版本保持一致)。

我正在使用 docker-compose 启动 ES 容器以及 Logstash 和 Kibana 图像。这是启动 ES 容器的设置:

jhipster-elasticsearch:
    image: jhipster/jhipster-elasticsearch:v1.3.2
    ports:
        - 9400:9200
        - 9500:9300
    volumes:
       - ./log-es-config/elasticsearch_custom.yml:/usr/share/elasticsearch/config/elasticsearch.yml

所以我将 9400 用于 REST，将 9500 用于传输通信。

这是安装到 ES 配置的 elasticsearch_custom.yml 中的配置:

cluster.name: "log-cluster"
node.name: "log-node"
http.host: 0.0.0.0
transport.host: 127.0.0.1
transport.tcp.port: 9500
transport.publish_port: 9500

当我启动容器时，这是我从 http://localhost:9400/_nodes 得到的:

"cluster_name": "log-cluster",
  "nodes": {
    "xLsGj2DyTdCF89I7sAToVw": {
      "name": "log-node",
      "transport_address": "127.0.0.1:9500",
      "host": "127.0.0.1",
      "ip": "127.0.0.1",
      "version": "2.4.0",
      "build": "ce9f0c7",
      "http_address": "172.18.0.5:9200",
      "settings": {
        "cluster": {
          "name": "log-cluster"
        },
        ... (I can put all response if needed)

Java API:

现在我正尝试像这样连接到这个 ES 节点:

    @Bean
    public ElasticsearchOperations logsElasticsearchOperations() throws UnknownHostException {
        Settings settings = Settings.settingsBuilder()
            .put("cluster.name", "log-cluster")
            .put("node.name", "log-node")
            .build();

        Client client = TransportClient.builder()
            .settings(settings)
            .build()
            .addTransportAddress(new InetSocketTransportAddress(new InetSocketAddress("127.0.0.1", 9500)));


        ElasticsearchTemplate template = new ElasticsearchTemplate(client);
        template.createIndex(ProcessLog.class);
        log.debug("Elasticsearch for logs configured.");
        return template;
    }

我遇到的错误是最著名的错误:

引起:org.elasticsearch.client.transport.NoNodeAvailableException:配置的节点均不可用:[{#transport#-1}{127.0.0.1}{127.0.0.1:9500} ]

我用谷歌搜索并尝试了不同的配置方法，也将 client.transport.sniff 设置为 false，但没有一个有效。现在我花了很多时间尝试配置这个，但我仍然遗漏了一些东西。

在此先感谢您的帮助。

更新:

当我启动应用程序时，还有嵌入式 ES 实例在运行。所以主机端口配置是这样的:

• 嵌入式 ES:9200 (http)、9300 (tcp)
• Docker 的 ES:9400 (http), 9500 (tcp)

这是完整的docker-compose.yml:

    version: '2'
    services:
    jhipster-elasticsearch:
        # elasticsearch 2.4.0 - to be in line with spring boot version
        image: jhipster/jhipster-elasticsearch:v1.3.2
        ports:
            - 9400:9200
            - 9500:9300
        volumes:
           - ./log-es-config/elasticsearch_custom.yml:/usr/share/elasticsearch/config/elasticsearch.yml
    jhipster-logstash:
        image: jhipster/jhipster-logstash:v2.2.1
        command: logstash -f /conf/logstash_custom.conf
        ports:
            - 5000:5000/udp
            - 6000:6000/tcp
        volumes:
            - ./logstash-log-es-conf/:/conf
    jhipster-console:
        image: jhipster/jhipster-console:v2.0.1
        ports:
            - 5601:5601
    jhipster-zipkin:
        image: jhipster/jhipster-zipkin:v2.0.1
        ports:
            - 9411:9411
        environment:
            - ES_HOSTS=http://jhipster-elasticsearch:9400
            - ZIPKIN_UI_LOGS_URL=http://localhost:5601/app/kibana#/dashboard/logs-dashboard?_g=(refreshInterval:(display:Off,pause:!f,value:0),time:(from:now-1h,mode:quick,to:now))&_a=(filters:!(),options:(darkTheme:!f),panels:!((col:1,id:logs-levels,panelIndex:2,row:1,size_x:6,size_y:3,type:visualization),(col:7,columns:!(stack_trace),id:Stacktraces,panelIndex:7,row:1,size_x:4,size_y:3,sort:!('@timestamp',desc),type:search),(col:11,id:Log-forwarding-instructions,panelIndex:8,row:1,size_x:2,size_y:3,type:visualization),(col:1,columns:!(app_name,level,message),id:All-logs,panelIndex:9,row:4,size_x:12,size_y:7,sort:!('@timestamp',asc),type:search)),query:(query_string:(analyze_wildcard:!t,query:'{traceId}')),title:logs-dashboard,uiState:())

Answer 1

我设法通过在 elasticsearch_custom.yml 中将 transport.host 定义为 0.0.0.0 来实现这一点，因此实例绑定(bind)到容器的 ip。

也许这也应该是项目 github 上 elasticsearch.yml 的默认设置 repo .