前言
最近也是在写关于一个数据分析的项目，感觉只使用mysql和JavaList操作解决不了想要的数据问题，所以也是入手学习了elasticsearch，安装与配置过程中也是有一些需要注意的点，这里分享给大家。
我们需要下载一共四个东西，这里由于ElasticSearch的ik分词器只有8.2.0版本，所以我们都以windows版，8.2.0版本为例。

elasticsearch-8.2.0-windows-x86_64.zip
elasticsearch-head-master可视化工具
kibana-8.2.0-windows-x86_64.zip
elasticsearch-analysis-ik-8.2.0.zip
下面我们先介绍elasticsearch的安装教程，之后的教程放到后面的文章中。
一、下载与安装
我们只需要点击上面的官网链接，选择自己所需要的版本下载即可。

 

 

 下载好之后就是一个zip的压缩文件，我们选择好安装目录之后直接解压即可，开箱即用。

 

 

解压后的目录如下：

 

安装Java（7.X以上的版本可以忽略，此文为8.4.3，所以不需要单独安装了，jdk目录里已经集成了）

 我们直接进入bin目录下，找到elasticsearch.bat批处理文件，点击直接运行即可。（右键管理员吧）

 

 

 运行后，控制台输出日志，下面就是我们elasticsearch的账号密码。

 

 

 elaasticsearch的默认访问路径是localhost:9200，我们打开浏览器直接访问即可。如果访问不了也没关系，我们可以先修改配置文件之后再进行访问。

注意：8.4.3我测试的无法直接打开默认网址，需要先进行配置（原因是：ES8默认开启了ssl认证，导致无法访问9200端口，elasticsearch.yml配置文件添加【xpack.security.enabled: false】即可）（https://zhuanlan.zhihu.com/p/504694531）

Elasticsearch在Windows下开启了安全认证，虽然started成功，但访问http://localhost:9200/失败（https://blog.csdn.net/zhangphil/article/details/124476717）

 received plaintext traffic on an encrypted channel, closing connection Netty4TcpChannel

首先需要联网，程序启动会安装java的一些东西，有的文档提示安装失败也可以使用，这里没测试，还是联网吧

# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
#       Before you set out to tweak and tune the configuration, make sure you
#       understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please consult the documentation for further information on configuration options:
# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
#cluster.name: my-application
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: node-1
#
# Add custom attributes to the node:
#
#node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
#path.data: /path/to/data
#
# Path to log files:
#
#path.logs: /path/to/logs
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# By default Elasticsearch is only accessible on localhost. Set a different
# address here to expose this node on the network:
#
network.host: 0.0.0.0
#
xpack.security.enabled: false
# By default Elasticsearch listens for HTTP traffic on the first free port it
# finds starting at 9200. Set a specific HTTP port here:
#
#http.port: 9200
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when this node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
#discovery.seed_hosts: ["host1", "host2"]
#
# Bootstrap the cluster using an initial set of master-eligible nodes:
#
cluster.initial_master_nodes: ["node-1"]
#
# For more information, consult the discovery and cluster formation module documentation.
#
# --------------------------------- Readiness ----------------------------------
#
# Enable an unauthenticated TCP readiness endpoint on localhost
#
#readiness.port: 9399
#
# ---------------------------------- Various -----------------------------------
#
# Allow wildcard deletion of indices:
#
#action.destructive_requires_name: false

红颜色部分是我后加的，注意开启远程访问需要设置【network.host: 0.0.0.0】写成IP地址我这里直接报错退出，错误代码

 received plaintext traffic on an encrypted channel, closing connection Netty4TcpChannel

二、修改配置

1.修改elasticsearch.yml配置

# 换个集群的名字，免得跟别人的集群混在一起
cluster.name: el-m

# 换个节点名字
node.name: el_node_m1

# 修改一下ES的监听地址，这样别的机器也可以访问，设置IP地址好像不行
network.host: 0.0.0.0

#设置对外服务的http端口，默认为9200
http.port: 9200

#设置索引数据的存储路径
path.data: F:/elasticsearch-8.2.0/data    #换成自己的路径
#设置日志文件的存储路径
path.logs: F:/elasticsearch-8.2.0/logs    #换成自己的路径

# 关闭http访问限制
xpack.security.enabled: false

# 增加新的参数，head插件可以访问es，跨域访问一定要配置
http.cors.enabled: true
http.cors.allow-origin: "*"

#----------------------- BEGIN SECURITY AUTO CONFIGURATION -----------------------
# Enable security features
#xpack.security.enabled: false
xpack.security.enrollment.enabled: true

# Enable encryption for HTTP API client connections, such as Kibana, Logstash, and Agents
xpack.security.http.ssl:
  enabled: false
  keystore.path: certs/http.p12

# Enable encryption and mutual authentication between cluster nodes
xpack.security.transport.ssl:
  enabled: true
  verification_mode: certificate
  keystore.path: certs/transport.p12
  truststore.path: certs/transport.p12
# Create a new cluster with the current node only
# Additional nodes can still join the cluster later
cluster.initial_master_nodes: ["el_node_m1"]  #注意，这个要与node.name填写一致

#----------------------- END SECURITY AUTO CONFIGURATION -------------------------

2.重新启动服务

重新使用cmd进入elasticsearch目录进行启动。
启动后我的控制台是这样：

 

 然后访问浏览器http://localhost:9200

 

 出现这个就是安装和启动成功了。

还有可能的一个报错

Native controller process has stopped - no new native processes can be started

解决方法：

修改config文件夹下的elasticsearch.yml文件：

node.name: node-1

cluster.initial_master_nodes: ["node-1"]

修改之后保存，再次启动elasticsearch，就成功启动elasticsearch了。

还是配置的问题，前面交代过了。

原文链接：https://blog.csdn.net/z318913/article/details/125325662

也推荐阅读：windows环境基于Elasticsearch8.4.0的Head工具下载、安装、使用

windows环境基于Elasticsearch8.4.0的IK中文分词器的安装、部署、使用

Elasticsearch8重置elastic用户密码

大概意思就是不要用设置命令，直接用重置命令

./elasticsearch-reset-password

 默认应该是第一次启动的时候会有默认的密码，但是我的没有看到，log中也没有

改配置了就无法启动，稍后研究

可以看这个文章：龙叔学ES：Elasticsearch XPACK安全认证

好像需要配置证书啥的

照这操作重置密码成功，接下来还是更改配置文件

#配置开启跨域
http.cors.enabled: true
#配置允许任何域名访问
http.cors.allow-origin: "*"
#设置密码后的访问配置
http.cors.allow-headers: Authorization,X-Requested-With,Content-Length,Content-Type

重启ES

访问es-head的url要变动

    • 原来是http://IP:9100
    • 现在因为加密了，所以要做身份验证，格式：http://IP:9100/?auth_user=用户名&auth_password=密码
      通过该url访问es-head，然后注正常填写es的地址即可

按链接文字一步步走就行，密码处全部回车就行，成功！