1、在官网下载Get Started with Elasticsearch, Kibana, and the Elastic Stack | Elastic
2、上传到CentOs（我这边在 /home/software/目录下）
3、解压 tar -zxvf
4、移动 （习惯把安装文件统一放到 /usr/local）
并进入到 /usr/local/
mv elasticsearch-8.1.0 /usr/local/ cd /usr/local/
5、进入到 cd elasticsearch-8.1.0/ ，创建文件夹 mkdir data
6、进入 cd config/ ，编辑配置文件 vim elasticsearch.yml
（需要修改的配置请看注释，根据自己的情况自行修改）
（注意：因为是yml文件，顶格写。我这里截图的时候没有顶格写，不想换图了）
修改elasticsearch.yml 后配置文件内容如下
# ======================== 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: # # 客户端名称 #cluster.name: my-application cluster.name: xpf-elasticsearch # # ------------------------------------ Node ------------------------------------ # # Use a descriptive name for the node: # # 节点 node.name: es-node1 # # Add custom attributes to the node: # #node.attr.rack: r1 # # ----------------------------------- Paths ------------------------------------ # # Path to directory where to store the data (separate multiple locations by comma): # # 数据和日志存放位置 path.data: /usr/local/elasticsearch-8.1.0/data # # Path to log files: # path.logs: /usr/local/elasticsearch-8.1.0/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: # # 改成0.0.0.0 ， 使得外部也能访问 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: # # 发现已有的节点（要和上面自己配的节点名字相同） cluster.initial_master_nodes: ["es-node1"] # # For more information, consult the discovery and cluster formation module documentation. # # ---------------------------------- Various ----------------------------------- # # Allow wildcard deletion of indices: # #action.destructive_requires_name: false
7、修改配置文件 jvm.options ，vim jvm.options
8、由于root用户下不准启动es，所以要创建一个新的用户才能够使用es。这里创建一个名叫esuser 的新用户
useradd esuser
9、给新建用户授权 chown -R esuser /usr/local/elasticsearch-8.1.0/
10、切换用户 su esuser ，启动bin下的es： bin/elasticsearch
（若报错与root用户有关，那么第9步就改成 chown -R esuser:esuser /usr/local/elasticsearch-8.1.0/ , 我这里是另一个错误)
（若上面可以直接启动成功直接到第14步）
11、切换成root用户， su root ， 修改limits.conf配置
vim /etc/security/limits.conf
* soft nofile 65536 * hard nofile 131072 * soft nproc 2048 * hard nproc 4096
12、修改 sysctl.conf 配置文件
vim /etc/sysctl.conf
加入下面一行配置
vm.max_map_count=262145
刷新配置 sysctl -p
13、切换为esuser用户，启动es
su esuser ./bin/elasticsearch
14、访问 192.168.217.129:9200
