索引别名,滚动索引
索引别名——API会自动将别名转换为实际索引名称。
别名可以映射到多个索引
别名还可以与过滤器关联，该过滤器在搜索和路由值时自动应用
别名不能与索引同名
1.创建一个索引的别名
2.删除一个索引的别名
3.重命名一个索引的别名
4.多个索引添加别名
5.创建过滤器别名（带有过滤器的别名，提供了一种简单的方法来创建系统个索引的不同视图。）
6.查询别名
7.滚动索引（当现有的索引太大或太老时，滚动索引将别名滚动到新的索引）
1. 创建一个索引的别POST /_aliases{
"actions": [ { "add": { "index": "test1", "alias": "alias1" } } ] }
GET _alias { "my_index" : { "aliases" : { "alias1" : { } } }, "test1" : { "aliases" : { "alias1" : { } } }
2.删除一个索引的别名
POST /_aliases { "actions": [ { "remove": { "index": "test1", "alias": "alias1" } } ] }
3.重命名一个索引的别名
#新建索引，没有别名 "test2" : { "aliases" : { } } POST /_aliases { "actions": [ { "remove": { "index": "test1", "alias": "alias1" }}, { "add": { "index": "test2", "alias": "alias1" } } ] } GET _alias { "my_index" : { "aliases" : { "alias1" : { } } }, "test2" : { "aliases" : { "alias1" : { } } }, ".kibana_1" : { "aliases" : { ".kibana" : { } } }, "test1" : { "aliases" : { } }, ".kibana_task_manager" : { "aliases" : { } } }
4.多个索引添加别名
POST /_aliases { "actions": [ { "add": { "index": "test1", "alias": "alias1" } }, { "add": { "index": "test2", "alias": "alias2" } } ] }
POST /_aliases { "actions": [ { "add": { "indices":[ "test1","test2"], "alias": "alias1" } } ] }
5.创建过滤器别名
使用别名应用于所有的search ，count，delete by Query，more like this 操作
创建过滤器别名，先确定字段在mapping中。
GET my_index "my_index" : { "aliases" : { "alias1" : { } }, "mappings" : { "properties" : { "age" : { "type" : "long" }, "created" : { "type" : "date" }, "name1" : { "type" : "text" }, "title" : { "type" : "text" } } } POST /_aliases { "actions": [ { "add": { "index": "my_index", "alias": "alias3", "filter": {"term": { "age": "16" }} } } ] } GET my_index/_alias/*
"my_index" : { "aliases" : { "alias1" : { }, "alias3" : { "filter" : { "term" : { "age" : "16" } } } } }
6. 查询别名
索引名/_alias/别名
*/_all/glob pattern/ name1,name2
GET my_index/_alias/* GET my_index/_alias/alias3
GET my_index/_alias/alias3,alias1
GET my_index/_alias/_all
7.滚动索引
滚动索引API接受单个别名和条件列表。
别名必须指向一个可写的索引，保证滚动请求有效。
两种场景：
1.别名仅仅指向一个索引，is_write_index参数不配置（默认是true）
原始索引的别名将滚动到新的索引中，并将别名从原始索引中移除。
2.别名指向多个索引，在其中一个索引上设置is_write_index为true，用于滚动。
将原索引的滚动别名的参数is_write_index设置为false，而新创建的索引将滚动别名指向自己，并is_write_index设置为true
PUT /log-00001 { "aliases": { "logs_write": {} } } POST /logs_write/_rollover { "conditions": { "max_age": "7d", "max_docs": 1000, "max_size": "5gb" } }
7天或更长时间之前创建
包含1000个或更多文档，
索引的大小至少约为5GB，才会创建新的索引
滚动索引的命名规则是遵循第一个索引的命名规则的，如果想改新的索引如下：
POST /logs_write/_rollover/logs-001 { "conditions": { "max_age": "7d", "max_docs": 1000, "max_size": "5gb" } }
滚动索引的例子：
PUT my_logs_index-0001 { "aliases": { "logs": {"is_write_index":true} } } PUT logs/_doc/1 { "message":"a dummy log" } POST logs/_refresh POST logs/_rollover { "conditions": { "max_docs": 1 } } PUT logs/_doc/2 { "message":"a newer log" } { "_index" : "my_logs_index-000002", "_type" : "_doc", "_id" : "2", "_version" : 1, "result" : "created", "_shards" : { "total" : 2, "successful" : 1, "failed" : 0 }, "_seq_no" : 0, "_primary_term" : 1 } GET _alias/logs { "my_logs_index-0001" : { "aliases" : { "logs" : { "is_write_index" : false } } }, "my_logs_index-000002" : { "aliases" : { "logs" : { "is_write_index" : true } } } } GET logs/_search { "took" : 0, "timed_out" : false, "_shards" : { "total" : 2, "successful" : 2, "skipped" : 0, "failed" : 0 }, "hits" : { "total" : { "value" : 2, "relation" : "eq" }, "max_score" : 1.0, "hits" : [ { "_index" : "my_logs_index-000002", "_type" : "_doc", "_id" : "2", "_score" : 1.0, "_source" : { "message" : "a newer log" } }, { "_index" : "my_logs_index-0001", "_type" : "_doc", "_id" : "1", "_score" : 1.0, "_source" : { "message" : "a dummy log" } } ] } }
PUT my_logs_index-0001/_doc/5 { "message":"aaaa" } PUT my_logs_index-000002/_doc/5 { "message":"bbbb" } PUT logs/_doc/7 { "message":"ddd" } { "took" : 2, "timed_out" : false, "_shards" : { "total" : 2, "successful" : 2, "skipped" : 0, "failed" : 0 }, "hits" : { "total" : { "value" : 5, "relation" : "eq" }, "max_score" : 1.0, "hits" : [ { "_index" : "my_logs_index-000002", "_type" : "_doc", "_id" : "2", "_score" : 1.0, "_source" : { "message" : "a newer log" } }, { "_index" : "my_logs_index-000002", "_type" : "_doc", "_id" : "5", "_score" : 1.0, "_source" : { "message" : "cccc" } }, { "_index" : "my_logs_index-000002", "_type" : "_doc", "_id" : "7", "_score" : 1.0, "_source" : { "message" : "ddd" } }, { "_index" : "my_logs_index-0001", "_type" : "_doc", "_id" : "1", "_score" : 1.0, "_source" : { "message" : "a dummy log" } }, { "_index" : "my_logs_index-0001", "_type" : "_doc", "_id" : "5", "_score" : 1.0, "_source" : { "message" : "aaaa" } } ] } }
滚动索引，版本7测试。可以向旧索引，新索引，索引别名插入数据。
问题：滚动索引不是自动创建新的索引吗？ 可是没有啊，当我手动执行的时候才创建的。
索引设置一个别名滚动，智能化滚动一次吗？
