下載地址：https://www.elastic.co/cn/downloads/past-releases/winlogbeat-8-8-1

解壓\elasticsearch\elasticsearch-8.5.1

?進(jìn)入bin目錄，啟動(dòng)elasticsearch.bat

問題1：

warning: ignoring JAVA_HOME=D:\jdk1.8.0_271; using bundled JDK

JDK問題，使用ES自帶JDK

修改elasticsearch-env.bat文件

set JAVA="%ES_HOME%\jdk\bin\java.exe"
set JAVA_HOME="%ES_HOME%\jdk"

啟動(dòng)elasticsearch.bat

問題2：

?內(nèi)存問題，修改\elasticsearch-8.5.1\config\jvm.options文件

啟動(dòng)elasticsearch.bat

問題3?

?修改conf目錄下的elasticsearch.yml文件，新增一條配置，關(guān)閉更新配置

啟動(dòng)elasticsearch.bat成功。

記錄密碼

關(guān)閉密碼：打開config 目錄下面的 elasticsearch.yml 文件，把加密關(guān)閉

修改密碼

修改elasticsearch.yml 改為

xpack.security.enabled: true

重啟ES后bin目錄下執(zhí)行

./elasticsearch-setup-passwords interactive

出現(xiàn)異常

?修改命令

./elasticsearch-reset-password -u elastic -i

修改密碼完成

問題4?

最大的坑?。。。?！

最大的坑?。。。?！

最大的坑?。。。?！

ES8默認(rèn)采用HTTPS請求，Java連接失敗，需要將elasticsearch-8.5.1\config\certs下http_ca.crt證書配置到項(xiàng)目的resource目錄下，或修改elasticsearch.yml配置文件，關(guān)閉https，注意將證書路徑也注釋掉。

?依賴配置

        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>8.7.1</version>
        </dependency>
        <dependency>
            <groupId>co.elastic.clients</groupId>
            <artifactId>elasticsearch-java</artifactId>
            <version>8.7.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.8.1</version>
        </dependency>
        <dependency>
            <groupId>jakarta.json</groupId>
            <artifactId>jakarta.json-api</artifactId>
            <version>2.0.1</version>
        </dependency>

代碼文章來源地址http://www.zghlxwxcb.cn/news/detail-561387.html

 try {
    HttpHost[] httpHosts = Arrays.stream(clusterNodes.split(",")).map(x -> {
        String[] hostInfo = x.split(":");
        return new HttpHost(hostInfo[0], Integer.parseInt(hostInfo[1]));
    }).toArray(HttpHost[]::new);

    final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
    //設(shè)置賬號密碼
   credentialsProvider.setCredentials(
        AuthScope.ANY, new UsernamePasswordCredentials(account, passWord));

   builder = RestClient.builder(httpHosts)
        .setHttpClientConfigCallback(httpClientBuilder ->
         httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider));
   // Create the low-level client
   restClient = builder.build();
   // Create the transport with a Jackson mapper
   transport = new RestClientTransport(restClient, new JacksonJsonpMapper());
   // And create the API client
   client = new ElasticsearchClient(transport);
   Boolean acknowledged = client.indices().create(c -> c.index("user")).acknowledged();
   System.out.println("<<<<<<<<<<<<<<<acknowledged>>>>>>>>>>>>>>>>>>>" + acknowledged);
} catch (Exception e) {
   e.printStackTrace();
}

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