集群健康檢查 取得健康狀態 GET /_cat/health?v 返回： 健康狀態分類 green：索引的primary shard和replica shard都是active狀態的 yellow：索引的primary shard都是active狀態的，但是部分replica shard不是acti ...
集群健康檢查
取得健康狀態
GET /_cat/health?v
返回：
epoch timestamp cluster status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent 1535248805 10:00:05 elasticsearch yellow 1 1 1 1 0 0 1 0 - 50.0%
健康狀態分類
green：索引的primary shard和replica shard都是active狀態的
yellow：索引的primary shard都是active狀態的，但是部分replica shard不是active狀態，處於不可用的狀態、
red：不是所有索引的primary shard都是active狀態的，部分索引有數據丟失了
當前處於yellow狀態是因為目前只啟動了一個es進程，只有一個節點node，這是不安全的。這個節點的primary shard 有分配，但是replica shard 沒有節點分配，因此是yellow狀態。
快速查看集群有哪些節點
GET /_cat/indices?vhealth status index uuid pri rep docs.count docs.deleted store.size pri.store.size yellow open .kibana xSbUffi_SYGYIhPtiMxH5w 1 1 1 0 3.1kb 3.1kb
簡單的索引操作
創建索引：PUT /test_index?pretty 返回：{ "acknowledged": true, "shards_acknowledged": true }刪除索引：DELETE /test_index?pretty 返回：
{ "acknowledged": true }
CURD 操作Demo
（1）新增商品：新增文檔，建立索引
PUT /ecommerce/product/1 { "name" : "xi jie jing", "desc" : "gaoxiao qing jie", "price" : 30, "producer" : "xijiejing producer", "tags": [ "qingxi", "wuzhi" ] }返回：
{ "_index": "ecommerce", "_type": "product", "_id": "1", "_version": 1, "result": "created", "_shards": { "total": 2, "successful": 1, "failed": 0 }, "created": true }
新增
PUT /ecommerce/product/2 { "name" : "niunai", "desc" : "mengniu niunai", "price" : 25, "producer" : "mengniuniunai producer", "tags": [ "niunai" ] }
返回：
{ "_index": "ecommerce", "_type": "product", "_id": "2", "_version": 1, "result": "created", "_shards": { "total": 2, "successful": 1, "failed": 0 }, "created": true }（2）查詢商品：檢索文檔
GET /ecommerce/product/1
返回：
{ "_index": "ecommerce", "_type": "product", "_id": "1", "_version": 1, "found": true, "_source": { "name": "xi jie jing", "desc": "gaoxiao qing jie", "price": 30, "producer": "xijiejing producer", "tags": [ "qingxi", "wuzhi" ] } }（3）修改商品：替換文檔
PUT /ecommerce/product/1 { "name" : "jiaqiangban gaolujie yagao", "desc" : "gaoxiao meibai", "price" : 30, "producer" : "gaolujie producer", "tags": [ "meibai", "fangzhu" ] }
返回：
{ "_index": "ecommerce", "_type": "product", "_id": "1", "_version": 2, "result": "updated", "_shards": { "total": 2, "successful": 1, "failed": 0 }, "created": false }（5）刪除商品：刪除文檔
DELETE /ecommerce/product/1
{ "found": true, "_index": "ecommerce", "_type": "product", "_id": "1", "_version": 3, "result": "deleted", "_shards": { "total": 2, "successful": 1, "failed": 0 } }多種搜索方式 1 query string search GET /ecommerce/product/_search
{ "took": 12, "timed_out": false, "_shards": { "total": 5, "successful": 5, "failed": 0 }, "hits": { "total": 1, "max_score": 1, "hits": [ { "_index": "ecommerce", "_type": "product", "_id": "2", "_score": 1, "_source": { "name": "niunai", "desc": "mengniu niunai", "price": 25, "producer": "mengniuniunai producer", "tags": [ "niunai" ] } } ] } }
欄位說明：
took：耗時 timed_out：是否超時 _shards：數據拆成了5個分片 hits.total：查詢結果的數量，3個document hits.max_score：匹配分數，越相關，就越匹配，分數也高 hits.hits：包含了匹配搜索的document的詳細數據 此方法只是臨時在命令行使用，例如crul，不適用於複雜查詢。 2 query DSL 可以用json語法查詢語法 查詢所有的商品：GET /ecommerce/product/_search { "query": { "match_all": {} } }
按照價格排序：
GET /ecommerce/product/_search { "query" : { "match" : { "name" : "yagao" } }, "sort": [ { "price": "desc" } ] }
3 query filter
搜索商品名稱包含yagao，而且售價大於25元的商品 GET /ecommerce/product/_search { "query" : { "bool" : { "must" : { "match" : { "name" : "yagao" } }, "filter" : { "range" : { "price" : { "gt" : 25 } } } } } }4、full-text search（全文檢索）
GET /ecommerce/product/_search { "query" : { "match" : { "producer" : "yagao producer" } } }
