elasticsearch 安装的版本: elasticsearch-6.3.1 elasticsearch 启动报错, 报错信息如下: [root@hadoop-01 bin]# ./elasticsearch [2020-02-19T11:37:26,391][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [] uncaught exception in thread [main] org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: ca