【总结】Elasticsearch 导出建索引语句
背景
有时候开发中，经常会遇到多个环境间，索引不一致的情况，可能是开发过程中变更原有设计了，但是没有及时更新发布文档，导致上线后，多个环境间不一致。
同样的功能，在开发测试环境没问题，在生产环境出问题。怀疑是索引建的有问题，那么可以通过以下方式，将开发测试环境的索引，重新在生产环境建一遍。
1.备份现有索引
curl --location --request GET 'http://10.10.23.31:9200/roster_20230117test/'
请求得到的结果：
{
"trade_roster_20230117test": {
"aliases": {},
"mappings": {
"properties": {
"createBy": {
"type": "text"
},
"effectFlag": {
"type": "integer"
},
"entityLabel": {
"type": "text"
},
"expireTime": {
"type": "date",
"null_value": "1900-01-01 00:00:01",
"format": "yyyy-MM-dd HH:mm:ss"
},
"gmtCreate": {
"type": "date",
"null_value": "1900-01-01 00:00:01",
"format": "yyyy-MM-dd HH:mm:ss"
},
"gmtModify": {
"type": "date",
"null_value": "1900-01-01 00:00:01",
"format": "yyyy-MM-dd HH:mm:ss"
},
"rosterName": {
"type": "text"
},
"rosterType": {
"type": "integer"
},
"rosterUuid": {
"type": "text"
},
"validUnit": {
"type": "integer"
},
"validValue": {
"type": "text"
},
"workspaceUuid": {
"type": "keyword"
}
}
},
"settings": {
"index": {
"creation_date": "1673926500380",
"number_of_shards": "1",
"number_of_replicas": "1",
"uuid": "9YgfedJzR52SkYhN8TOPmQ",
"version": {
"created": "7090399"
},
"provided_name": "trade_roster_20230117test"
}
}
}
}
将结果里的,mapping 和 settings配置，粘贴到以下报文结构的指定内容:
{
“mappings”: {}
“settings”: {}
}
settings部分，仅需要以下两个配置即可。
分片数，按集群节点数1.5~2倍配置
“number_of_shards”: “6”,
副本数，建议配置3
“number_of_replicas”: “3”,
2.恢复索引（不恢复数据）
创建索引，将上述构造好的建索引脚本，粘贴到–data-raw中。注意替换url部分ip、端口、索引名。
curl --location --request PUT 'http://10.10.23.31:9200/roster_20230117test/'' \
--header 'Content-Type: application/json' \
--data-raw '{
"settings": {
"index": {
"number_of_shards": "3",
"number_of_replicas": "0"
}
},
"mappings": {
"properties": {
"createBy": {
"type": "text"
},
"effectFlag": {
"type": "integer"
},
"entityLabel": {
"type": "text"
},
"expireTime": {
"type": "date",
"null_value": "1900-01-01 00:00:01",
"format": "yyyy-MM-dd HH:mm:ss"
},
"gmtCreate": {
"type": "date",
"null_value": "1900-01-01 00:00:01",
"format": "yyyy-MM-dd HH:mm:ss"
},
"gmtModify": {
"type": "date",
"null_value": "1900-01-01 00:00:01",
"format": "yyyy-MM-dd HH:mm:ss"
},
"rosterName": {
"type": "text"
},
"rosterType": {
"type": "integer"
},
"rosterUuid": {
"type": "text"
},
"validUnit": {
"type": "integer"
},
"validValue": {
"type": "text"
},
"workspaceUuid": {
"type": "keyword"
}
}
}
}'