搭建ES 7.15.2本地运行环境

前提概要IDEA安装Gradle插件&导入工程创建ES的Home目录修改配置文件配置启动参数启动工程&验证坑&解决办法参考资料 客官且慢，点赞、收藏+关注 谢谢~

本博客将搭建ES7.15.2的本地运行环境

下载安装包：https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.15.2-windows-x86_64.zip

下载源码：https://github.com/elastic/elasticsearch/tree/v7.15.2

安装JDK16：http://jdk.java.net/archive/

打开Settins->plugins，搜索gradle安装插件解压从github上下载的源代码压缩文件使用idea打开解压文件

创建ES的Home目录，并命名为run_time_config_7.15.2解压下载的安装包elasticsearch-7.15.2-windows-x86_64.zip，拷贝config、lib、modules文件到run_time_config_7.15.2目录下

添加文件run_time_config_7.15.2/config/elasticsearch.policy

grant{
permission javax.management.MBeanTrustPermission "register";
permission javax.management.MBeanAwecwePermission "createMBeanServer";
permission java.lang.RuntimePermission "createClassLoader";
permission java.lang.RuntimePermission "setContextClassLoader";
permission org.elasticsearch.secure_sm.ThreadPermission "modifyArbitraryThreadGroup";
permission org.elasticsearch.secure_sm.ThreadPermission "modifyArbitraryThread";
permission java.lang.RuntimePermission "getClassLoader";
};

修改run_time_config_7.15.2/config/elasticsearch.yml文件，修改信息如下：

# 其他ip可以访问本地es
network.host: 0.0.0.0
# 主节点候选节点ip，第一次启动集群需要该配置。
cluster.initial_master_nodes: ["localhost"]

修改policy文件/elasticsearch-7.15.2/server/out/production/resources/org/elasticsearch/bootstrap/security.policy；注释如下内容:

//grant codebase "${codebase.elasticsearch-secure-sm}" {
//  permission java.security.AllPermission;
//};

 Elasticsearch core:
 These are only allowed inside the server jar, not in plugins
//grant codebase "${codebase.elasticsearch}" {
  // needed for loading plugins which may expect the context class loader to be set
//  permission java.lang.RuntimePermission "setContextClassLoader";
//};

//grant codebase "${codebase.elasticsearch-plugin-classloader}" {
  // needed to create the classloader which allows plugins to extend other plugins
//  permission java.lang.RuntimePermission "createClassLoader";
//};

本地启动需要配置JVM启动参数，设置java运行版本是16

ES工程使用IDEA打开后，点击右上角的Edit Configuration


在弹窗中点击左上角加号->Application


填写相关信息

选择JRE版本 16

填写模块elasticsearch.server.main

填写jvm参数（没有这个选项的，点击Modify options->add VM options）；路径信息根据自己情况修改

-Des.path.home=D:learn-packageelasticsearchrun_time_config_7.15.2
-Des.path.conf=D:learn-packageelasticsearchrun_time_config_7.15.2config
-Djava.security.policy=D:learn-packageelasticsearchrun_time_config_7.15.2configelasticsearch.policy
-Dlog4j2.disable.jmx=true
-Xms4g
-Xmx4g

填写main方法所在类：org.elasticsearch.bootstrap.Elasticsearch

使用IDEA启动运行刚刚配置的Application

使用浏览器输入：localhost:9200

看到如下信息表示启动成功

{
  "name" : "",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "pcU9WYv8SyeViQ_LQSNDCg",
  "version" : {
    "number" : "7.15.2",
    "build_flavor" : "unknown",
    "build_type" : "unknown",
    "build_hash" : "unknown",
    "build_date" : "unknown",
    "build_snapshot" : true,
    "lucene_version" : "8.9.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

启动报错：

java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "createClassLoader")

解决办法：

将下面信息加入到run_time_config_7.15.2/config/elasticsearch.policy中，如果出现类似报错，按照对应格式加入到该文件即可解决

permission java.lang.RuntimePermission "getClassLoader"; 

启动失败解决办法：https://elasticsearch.cn/question/11513

张超-Elasticsearch源码解析与优化实战