- 查询集群状态命令：
curl -XGET "http://127.0.0.1:9200/_cluster/health?pretty"
- 查询Es全局状态：
curl -XGET "http://127.0.0.1:9200/_cluster/stats?pretty" - 查询集群设置
curl -XGET "http://127.0.0.1:9200/_cluster/settings?pretty" - 查看集群文档总数
curl -XGET "http://127.0.0.1:9200/_cat/count?v" - 查看集群别名组
curl -XGET "http://127.0.0.1:9200/_cat/aliases" - 查看当前集群索引分片信息，注：查看某一个索引可用shards/索引名?
curl -XGET "http://127.0.0.1:9200/_cat/shards?v" - 查看集群实例存储详细信息
curl -XGET "http://127.0.0.1:9200/_cat/allocation?v" - 查看当前集群的所有实例
curl -XGET "http://127.0.0.1:9200/_cat/nodes?v" - 查看某索引分片转移进度
curl -XGET "http://127.0.0.1:9200/_cat/recovery/索引名?v" - 查看当前集群等待任务
curl -XGET "http://127.0.0.1:9200/_cat/pending_tasks?v" - 查看集群写入线程池任务
curl -XGET "http://127.0.0.1:9200/_cat/thread_pool/write?v" - 查看集群查询线程池任务
curl -XGET "http://127.0.0.1:9200/_cat/thread_pool/search?v" - 查看分片未分配的原因
curl -XGET "http://127.0.0.1:9200/_cat/shards?v&h=index,shard,prirep,state,node,unassigned.reason" | grep UNASSIGNED - 查看具体原因
• curl -XGET "http://127.0.0.1:9200/_cluster/allocation/explain?pretty" -d '{"index":"pm_perf_itemrawinfo_20211004","shard":1,"primary":true}' -H 'Content-Type: application/json'索引
- 查询索引mapping和settings
• curl -XGET http://127.0.0.1:9200/test2?pretty
- 查询索引settings
• curl -XGET "http://127.0.0.1:9200/test2/_settings?pretty"
- 查看分片未分配详细命令
• curl -XGET "http://127.0.0.1:9200/_cluster/allocation/explain?pretty" -H 'Content-Type:application/json' -d '{"index": "indexname","shard": 17,"primary": true}'允许1000个shard; 但数量过多可能会对master 产生更大压力, 不会发挥出更好的性能; 另根据官方说法, 建议是节点上不超过 20 shard / JVM_GB
