elasticsearch7.6.1 不同服务器间索引数据迁移 旧索引数据迁移至新索引数据

举例子：索引A为旧索引，索引B为新索引。

1、获取A索引(旧索引)的数据结构

GET /index_a/_mapping/

2、创建一个新的索引B，结构同A。

POST /index_b/_mapping/
{
    "properties" : {
    "age" : {
    "type" : "long"},"education" : {
    "type" : "text"},"other": {
    "type": "text"},"name" : {
    "type" : "text","fields" : {
    "keyword" : {
    "type" : "keyword","ignore_above" : 256}}},"testedu" : {
    "type" : "text"}}
}

3、elasticsearch.yml 设置白名单

# 开启跨域
http.cors.enabled: true
# 所有人访问
http.cors.allow-origin: "*"
# network.host: 192.168.1.127
# http.port: 9200
# transport.tcp.port: 9300
reindex.remote.whitelist: "192.168.0.202:9200, 192.168.0.202:9200,127.0.10.*:9200, localhost:*"

4、迁移数据

POST _reindex
{
    "source": {
    "remote": {
    "host": "http://192.168.0.202:9200"}, "index": "index_a"},"dest": {
    "index": "index_b"}
}