elasticsearch部分：
在云服务器上安装ElasticSearch7.14 ，下载页面：https://www.elastic.co/cn/downloads/elasticsearch
下载后解压，启动es服务时不能以root用户启动，需要新建一个普通用户。
修改配置文件 elasticsearch.yml
# ======================== 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: 192.168.0.1
network.host: 0.0.0.0
#
# 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", "node-2"]
cluster.initial_master_nodes: ["node-1"]
#
# For more information, consult the discovery and cluster formation module documentation.
#
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
#action.destructive_requires_name: true
遇到的问题1：
[es@iZwz9b3oj2864l4ivl0qirZ bin]$ ./elasticsearch
could not find java in bundled JDK at /home/es7/elasticsearch-7.14.0/jdk/bin/java
解决：
给es用户（自己新建的一个非root用户）授予文件夹的权限：
chown -R es:es /home/es7/elasticsearch-7.14.0
遇到的问题2：
ERROR: [1] bootstrap checks failed. You must address the points described in the following [1] lines before starting Elasticsearch.
bootstrap check failure [1] of [1]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
解决：https://blog.csdn.net/qq_43655835/article/details/104637625
就是配置文件的最后一处红色部分的配置。
此时启动es服务，在本地通过服务器地址+9200端口可以访问
{
"name" : "node-1",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "yrsPwHnoSeqnXV6WirSOKQ",
"version" : {
"number" : "7.14.0",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "dd5a0a2acaa2045ff9624f3729fc8a6f40835aa1",
"build_date" : "2021-07-29T20:49:32.864135063Z",
"build_snapshot" : false,
"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"
}
kibana部分
下载kibana到windows，修改 config目录下的 kibana.yml 文件
将 elasticsearch.hosts: 里的ip改为云服务器的ip
接着运行bat文件，发现 一直报错：Action failed with 'Request timed out'. Retrying attempt
百思不得其解，初始以为是 kibana.yml 的配置文件改错了，经排查发现不是
突然看到es的控制台一直有输出东西，好像是在找集群的其他节点？而且找不到，为什么会这样呢？明明只有一个节点，是不是这个原因导致了kibana连接es失败了呢？
恰好看到这篇文章：https://www.cnblogs.com/simendavid/p/15606122.html
猜测是遇到问题2时的解决方案导致的，于是回去再看，原来自己配置elasticsearch.yml 文件时没有配置
node.name: node-1
但是后面的配置又用到了 cluster.initial_master_nodes: ["node-1"]
解决：给elasticsearch.yml配置文件加上
node.name: node-1
使用部分
在若依框架的基础上引入es7.14的依赖，但不知为何一直下不下来，最后只能自己把jar下下来，再安装到maven本地仓库
参考：将下载到本地的JAR包手动添加到Maven仓库
至于会安装到哪里，取决于你的maven配置
mvn install:install-file -Dfile="D:\es\elasticsearch-rest-high-level-client-7.14.0.jar" -DgroupId=org.elasticsearch.client -DartifactId=elasticsearch-rest-high-level-client -Dversion=7.14.0 -Dpackaging=jar
mvn install:install-file -Dfile="D:\es\elasticsearch-7.14.0.jar" -DgroupId=org.elasticsearch -DartifactId=elasticsearch -Dversion=7.14.0 -Dpackaging=jar
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