ES 基本操作

0.查看集群是否健康
GET /_cluster/health

1.查询所有索引
GET /_cat/indices?v

2.查询单个索引的映射
GET /index_trans_detail/_mapping

3.删除index
DELETE /index_trans_detail,index_two

4. 添加字段映射
PUT /index_trans_detail/_mapping/type_trans_detail
{
"properties": {
"tags":{
"type": "text"
}
}
}

5. 索引的别名
5.1 创建索引的别名
PUT /index_trans_detail/_alias/index_trans_detail_alias

5.2 查询索引的别名
GET /index_trans_detail/_alias/*

5.3 查询别名指向哪一个索引
GET /*/_alias/index_trans_detail_alias

5.4 删除别名
DELETE /index_trans_detail/_alias/index_trans_detail_alias

6. 添加一个索引（通过mapping）
PUT /people
{
"settings": {
"number_of_shards": 3,
"number_of_replicas": 1
},
"mappings": {
"man": {
"dynamic": "strict",
"properties": {
"name": {
"type": "text"
},
"age": {
"type": "integer"
},
"birthday": {
"type": "date",
"format": "yyyy-MM-dd HH:mm:ss||yyyy-MM-dd||epoch_millis"
},
"address":{
"dynamic": "true",
"type": "object"
}
}
}
}
}
"dynamic": "strict" 表示如果遇到陌生field会报错
"dynamic": "true" 表示如果遇到陌生字段，就进行dynamic mapping
"dynamic": "false" 表示如果遇到陌生字段，就忽略

7.修改字段可以排序
PUT index_trans_detail/_mapping/activity_dictionary
{
"properties": {
"type_code":{
"type": "text",
"fielddata": true
}
}
}

7.1 添加字段
PUT /index_trans_detail/_mapping/type_trans_detail
{
"properties": {
"tags":{
"type": "text"
}
}
}

通过别名更换索引
==========================================================
8.创建别名
POST _aliases
{
"actions": [
{
"add": {
"index": "old_index",
"alias": "old_index_alias"
}
}
]
}

9.将老的索引中的数据复制到新的索引中：
POST _reindex
{
"source": {
"index": "old_index"（老的索引名）
},
"dest": {
"index": "new_index"（新的索引名）
}
}

10,创建映射
POST _aliases
{
"actions": [
{
"remove": {
"index": "old_index",
"alias": "old_index_alias"
}},
{
"add": {
"index": "new_index",
"alias": "old_index_alias"
}
}
]
}