1.修改config/elsatcisearch.yml配置

cluster.name: my-application
node.name: node-1
network.host: 0.0.0.0
http.port: 9200
cluster.initial_master_nodes: ["node-1"]

2.如果直接运行./bin/elsaticsearch，报错

[o.e.b.ElasticsearchUncaughtExceptionHandler] [node-1] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root

3. 添加一个用来运行es的用户

useradd zen
passwd zen

4.把/opt/elasticsearch-7.13.1目录以及子目录拥有者和组改为zen这个用户

chown -R zen:zen /opt/elasticsearch-7.13.1

5.切换到zen用户，运行elsaticsearch

su zen
./bin/elasticsearch