你好呀，我的老朋友！我是老寇，欢迎来到老寇云平台！

跟我一起安装Elasticsearch。

下载elasticsearch

elasticsearch官网地址

下载分词

elasticsearch-analysis-ik地址
elasticsearch-analysis-pinyin地址

安装软件

解压压缩包

cd /opt
tar -zxvf elasticsearch-8.6.2-linux-x86_64.tar.gz
unzip -d /opt/pinyin elasticsearch-analysis-pinyin-8.6.2.zip
unzip -d /opt/ik elasticsearch-analysis-ik-8.6.2.zip
mv elasticsearch-8.6.2 /usr/local/elasticsearch
mv pinyin /usr/local/elasticsearch/plugins/pinyin
mv ik /usr/local/elasticsearch/plugins/ik

新增用户名和设置新密码

useradd elasticsearch
passwd elasticsearch

创建data和logs文件夹

mkdir -p /usr/local/elasticsearch/home/data
mkdir -p /usr/local/elasticsearch/home/logs

授予权限

chmod -R 777 /usr/local/elasticsearch

设置elasticsearch.yml

cd /usr/local/elasticsearch/config
vi elasticsearch.yml

# 增加
http.cors.enabled: true
http.cors.allow-origin: "*"
network.host: 0.0.0.0
cluster.name: laokou-elasticsearch #可自定义
node.name: node-elasticsearch #可自定义
http.port: 9200
cluster.initial_master_nodes: ["node-elasticsearch"] #这里就是node.name
path.data: /usr/local/elasticsearch/home/data # 数据目录位置
path.logs: /usr/local/elasticsearch/home/logs # 日志目录位置

设置堆内存

vi jvm.options

-Xms512m
-Xmx512m

修改jdk位置

cd /usr/local/elasticsearch/bin
vi elasticsearch-env
export ES_JAVA_HOME=$JAVA_HOME

开启ssl

cd /usr/local/elasticsearch/bin
# ES的根目录生成CA证书
./elasticsearch-certutil ca
# 根据生成的证书，生成p12密钥
./elasticsearch-certutil cert --ca elastic-stack-ca.p12

mkdir /usr/local/elasticsearch/config/certs
cd ..
cp elastic-stack-ca.p12 config/certs
cp elastic-certificates.p12 config/certs

cd config
vi elasticsearch.yml

# 授予权限
chown elasticsearch: /usr/local/elasticsearch/config/certs/elastic-certificates.p12

# 增加
xpack.security.enabled: true
xpack.license.self_generated.type: basic
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: certs/elastic-certificates.p12
xpack.security.transport.ssl.truststore.path: certs/elastic-certificates.p12

报错处理

# max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
vi /etc/sysctl.conf

vm.max_map_count = 655360

# 刷新参数
sysctl -p

# max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
vi /etc/security/limits.conf

elasticsearch soft nofile 65535
elasticsearch hard nofile 65537

启动

# 切换用户
su elasticsearch

cd /usr/local/elasticsearch/bin
./elasticsearch

设置密码

cd /usr/local/elasticsearch/config
vi elasticsearch.yml

# 增加
http.cors.allow-headers: Authorization

# 重启elasticsearch
cd /usr/local/elasticsearch/bin
./elasticsearch-setup-passwords interactive

后台运行

chmod +x /usr/local/elasticsearch/bin/elasticsearch
cd /usr/local/elasticsearch/bin
./elasticsearch -d

我是老寇，我们下次再见啦！