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linux Elasticsearch安装
一、Linux下Elasticsearach7.6.2的安装，ik分词器安装。
1.下载elasticsearch
properties
mkdir -p /home/elasticsearch
cd /home/elasticsearch
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.6.2-linux-x86_64.tar.gz可在其他途径手动下载，通过宝塔等工具上传服务器/home目录下
properties
tar -zxvf elasticsearch-7.6.2-linux-x86_64.tar.gz
mv elasticsearch-7.6.2-linux-x86_64 elasticsearch
cd elasticsearch2.安装
properties
#elasticSearch不允许root用户运行
useradd es
passwd es
chown -R es /home/elasticsearch3.修改配置
详细配置可看官网文档：https://www.elastic.co/guide/en/elasticsearch/reference/current/settings.html
properties
vim /home/elasticsearch/elasticsearch/config/elasticsearch.yml
node.name: master
node.master: true
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
network.host: 0.0.0.0
http.port: 9200
cluster.initial_master_nodes: ["master"]4.启动等
properties
su es
#后台启动
nohup ./elasticsearch >elasticsearch.out 2>&1 &
#关闭直接 kill 进程5.验证
properties
#先打开防火墙
firewall-cmd --permanent --zone=public --add-port=9200/tcp
systemctl restart firewalld
浏览器输入：http://{ip}:92007.安装ik分词器
properties
cd /home/elasticSearch/elasticsearch/plugins
mkdir ik
cd ik
wget https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v7.6.2/elasticsearch-analysis-ik-7.6.2.zip
#或自行从GitHub上下载 https://github.com/medcl/elasticsearch-analysis-ik/releases
unzip elasticsearch-analysis-ik-7.6.2.zip
#重启elasticsearc浏览器输入：http://{ip}:9200/_cat/plugins，显示：
properties
master analysis-ik 7.6.2