elasticsearch 重建索引 使用python迁移索引数据 reindex

1. 首先根据json文档重建索引：

   curl -XPUT 'http://127.0.0.1:9200/index_name/' -d @resume-10-14.json

2. 索引重定向

索引别名：resume_test_alias
旧索引：resume_test_4
新索引：resume_test_5

curl -XPOST http://127.0.0.1:9200/_aliases -d '

{

    "actions": [

        { "remove": {

            "alias":"resume_test_alias",

            "index":"resume_test_4"

        }},

        { "add": {

            "alias":"resume_test_alias",

            "index":"resume_test_5"

        }}

    ]

}’

3. 索引数据迁移——从旧索引迁移到新索引

from elasticsearch import helpers
from elasticsearch import Elasticsearch

es = Elasticsearch([{"host":"127.0.0.1","port":"9200"}])
body={"query":{"match_all":{}}}  #遍历原索引，可自定义query

helpers.reindex(client=es,source_index='resume_test_4',target_index='resume_test_5',target_client=es,query=body,chunk_size=1000, scroll='15m') #重建索引

4. 删除旧索引

curl -XDELETE 101.201.48.85:9200/resume_test_4