一、问题描述

elasticsearch 启动后报错 org.elasticsearch.discovery.MasterNotDiscoveredException: null：

org.elasticsearch.discovery.MasterNotDiscoveredException: nullat org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction$2.onTimeout(TransportMasterNodeAction.java:234) [elasticsearch-7.15.2.jar:7.15.2]at org.elasticsearch.cluster.ClusterStateObserver$ContextPreservingListener.onTimeout(ClusterStateObserver.java:324) [elasticsearch-7.15.2.jar:7.15.2]at org.elasticsearch.cluster.ClusterStateObserver$ObserverClusterStateListener.onTimeout(ClusterStateObserver.java:241) [elasticsearch-7.15.2.jar:7.15.2]at org.elasticsearch.cluster.service.ClusterApplierService$NotifyTimeout.run(ClusterApplierService.java:591) [elasticsearch-7.15.2.jar:7.15.2]at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:678) [elasticsearch-7.15.2.jar:7.15.2]at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]at java.lang.Thread.run(Thread.java:834) [?:?]

二、解决方法

报错原因是没有找到 master 节点，因此需要指定 master 节点。
修改 config/elasticsearch.yml 文件，添加以下两行：

node.name: node-1
cluster.initial_master_nodes: ["node-1"]

或

cluster.initial_master_nodes: ["127.0.0.1:9200"]

重启后问题解决。

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elasticsearch报错org.elasticsearch.discovery.MasterNotDiscoveredException: null

目录

一、问题描述

二、解决方法

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