ES7.2 安裝問題

配置好環境變量ES_HOME：D:\ELK\elasticsearch-7.2.0。ES_TMPDIR：D:\ELK\estmpdir。若是要安裝Logstash還須要配置JDK環境變量.   JAVA_HOME：D:\ELK\elasticsearch-7.2.0\jdk

一、配置network.host: 0.0.0.0 後，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"]

二、indexname必須爲小寫字母

三、報錯：Exception java.lang.SecurityException: Security misconfiguration: cannot access java.io.tmpdir

解決：elasticsearch.yml配置xpack.ml.enabled: false