es常见报错和解决办法(持续更新)

内存太少

max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

解决办法

解决办法：

切换到root用户下

在 /etc/sysctl.conf文件最后添加一行 vm.max_map_count=262144

/sbin/sysctl -p 使配置生效

org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root

解决办法

切换到es用户

ElasticSearch ClusterBlockException[blocked by: [FORBIDDEN/12/index read-only / allow delete (api)];

解决方案: An example of resetting the read-only index block on the twitter index: PUT /twitter/_settings { “index.blocks.read_only_allow_delete”: null }

官方描述 www.elastic.co/guide/en/el…

**ElasticSearch ** all shards failed
先检查各个节点磁盘空间是否够用，一般默认超过磁盘使用率超过95%，document会变成只读模式。

解决该问题一为扩容，二为集群设置集群设置高警戒水位线 put http://localhost:9200/_cluster/settings { "transient": { "cluster.routing.allocation.disk.watermark.flood_stage": "98%" } }

b. 查看节点信息是否有节点down掉

http://localhost:9200/_nodes/process?pretty

c. 查看索引状态是否有red节点

http://localhost:9200/_cat/indices?v 若有red索引，1.删除 2.通过备份索引数据，然后重建index和mapping 进行恢复