配置好環境變量ES_HOME：D:\ELK\elasticsearch-7.2.0。ES_TMPDIR：D:\ELK\estmpdir。如果要安裝Logstash還需要配置JDK環境變量. JAVA_HOME：D:\ELK\elasticsearch-7.2.0\jdk
1、配置network.host: 0.0.0.0 后，服務起不來。
查看log，是否報錯
the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
解決方法：
elasticsearch.yml加上
cluster.initial_master_nodes: ["節點名字"]
2、indexname必須為小寫字母
3、報錯：Exception java.lang.SecurityException: Security misconfiguration: cannot access java.io.tmpdir
解決：elasticsearch.yml配置xpack.ml.enabled: false