1、下载tar包
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.15.0-linux-x86_64.tar.gz
2、解压安装
tar xf elasticsearch-7.15.0-linux-x86_64.tar.gz
mv elasticsearch-7.15.0 /usr/local/elasticsearch
3、添加管理员账号（不能使用root启动）
useradd elasticsearch
passwd elasticsearch
4、修改配置文件（共三处）
cd /usr/local/elasticsearch
4.1修改启动文件
vim bin/elasticsearch
在第一个未注释行上方添加
#使用自带jdk
export ES_JAVA_HOME=/usr/local/elasticsearch/jdk
export PATH=$ES_JAVA_HOME/bin:$PATH
4.2修改配置文件
cat config/elasticsearch.yml | grep -v "#" | grep -v ^$
node.name: node-1
path.data: /usr/local/data
path.logs: /usr/local/elasticsearch/logs
network.host: 0.0.0.0
http.port: 9200
discovery.seed_hosts: ["127.0.0.1"]
cluster.initial_master_nodes: ["node-1"]
#在文件末尾添加，允许head插件链接
http.cors.enabled: true
http.cors.allow-origin: "*"
#创建path.data 目录
mkdir /usr/local/data
#添加hosts域名解析
cat /etc/hosts | grep node-1
127.0.0.1 node-1
4.3修改jdk配置文件，限制使用内存大小，最大不要超过物理内存的50%
cat config/jvm.options | grep Xm
-Xms2g
-Xmx2g
5、修改目录权限
cd /usr/local
chown -R elasticsearch. elasticsearch
chown -R elasticsearch. data
6、添加启动配置文件
cat /etc/systemd/system/elasticsearch.service
[Unit]
Description=es Service
After=syslog.target
After=network.target
[Service]
User=elasticsearch
Group=elasticsearch
Type=simple
LimitNOFILE=65536
LimitNPROC=65536
ExecStart=/usr/local/elasticsearch/bin/elasticsearch
[Install]
WantedBy=default.target
7、启动并添加开机启动
systemctl start elasticsearch.service
systemctl enable elasticsearch.service
8、测试访问
curl 127.0.0.1:9200
{
"name" : "node-1",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "HxjTeUb3SquC2-d52kgYpQ",
"version" : {
"number" : "7.15.0",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "79d65f6e357953a5b3cbcc5e2c7c21073d89aa29",
"build_date" : "2021-09-16T03:05:29.143308416Z",
"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"
}
