一、查询索引

         1、查询所有索引

curl --user elastic:123456 -XGET "http://localhost:19200/_cat/indices?v&s=index"

          2、查询索引配置

以索引名称hello为例

curl --user elastic:123456 -XGET "http://localhost:19200/hello/_settings?pretty"

          3、查询字段映射

curl --user elastic:123456 -XGET "http://localhost:19200/hello/_mapping?pretty"

二、同集群迁移

curl --user elastic:123456  -H "Content-Type: application/json"  -XPUT "http://localhost:19200/_reindex?wait_for_completion=false" -d'
{"source": { "index": "source_index" },"dest": { "index": "target_index" }
}'

三、跨集群迁移

         1、在目标集群配置白名单

           vi  elasticsearch.yml

reindex.remote.whitelist:  ["remote_es:19200"]

           重启目标集群节点 使配置生效。 

          2、执行跨集群迁移

curl --user elastic:123456  -H "Content-Type: application/json"  -XPUT "http://localhost:19200/_reindex" -d'
{"source": {"remote": {"host": "http://remote_es:19200","username": "source_user","password": "source_password"},"index": "remote_index","size": 5000},"dest": { "index": "local_index" }
}'