Elasticsearch 跨集群搜索 cross cluster search

短命女 2023-01-01 11:55 149阅读 0赞

Elasticsearch 通过cross cluster search实现跨集群搜索，需要在每个集群中添加一些动态配置，然后在搜索语句中就可以实现跨越集群进行搜索。

### 启动3个集群 ###

./bin/elasticsearch -E node.name=cluster0node -E cluster.name=cluster0 -E path.data=cluster0\_data -E discovery.type=single-node -E http.port=9200 -E transport.port=9300 -E network.host=0.0.0.0  
./bin/elasticsearch -E node.name=cluster1node -E cluster.name=cluster1 -E path.data=cluster1\_data -E discovery.type=single-node -E http.port=9201 -E transport.port=9301 -E network.host=0.0.0.0  
./bin/elasticsearch -E node.name=cluster2node -E cluster.name=cluster2 -E path.data=cluster2\_data -E discovery.type=single-node -E http.port=9202 -E transport.port=9302 -E network.host=0.0.0.0

### 在每个集群上设置动态的设置  ###

PUT \_cluster/settings  
\{  
  "persistent": \{  
    "cluster": \{  
      "remote": \{  
        "cluster0": \{  
          "seeds": \[  
            "127.0.0.1:9300"  
          \],  
          "transport.ping\_schedule": "30s"  
        \},  
        "cluster1": \{  
          "seeds": \[  
            "127.0.0.1:9301"  
          \],  
          "transport.compress": true,  
          "skip\_unavailable": true  
        \},  
        "cluster2": \{  
          "seeds": \[  
            "127.0.0.1:9302"  
          \]  
        \}  
      \}  
    \}  
  \}  
\}

以curl方式进行设置  
curl -XPUT "http://localhost:9200/\_cluster/settings" -H 'Content-Type: application/json' -d'  
\{"persistent":\{"cluster":\{"remote":\{"cluster0":\{"seeds":\["127.0.0.1:9300"\],"transport.ping\_schedule":"30s"\},"cluster1":\{"seeds":\["127.0.0.1:9301"\],"transport.compress":true,"skip\_unavailable":true\},"cluster2":\{"seeds":\["127.0.0.1:9302"\]\}\}\}\}\}'

curl -XPUT "http://localhost:9201/\_cluster/settings" -H 'Content-Type: application/json' -d'  
\{"persistent":\{"cluster":\{"remote":\{"cluster0":\{"seeds":\["127.0.0.1:9300"\],"transport.ping\_schedule":"30s"\},"cluster1":\{"seeds":\["127.0.0.1:9301"\],"transport.compress":true,"skip\_unavailable":true\},"cluster2":\{"seeds":\["127.0.0.1:9302"\]\}\}\}\}\}'

curl -XPUT "http://localhost:9202/\_cluster/settings" -H 'Content-Type: application/json' -d'  
\{"persistent":\{"cluster":\{"remote":\{"cluster0":\{"seeds":\["127.0.0.1:9300"\],"transport.ping\_schedule":"30s"\},"cluster1":\{"seeds":\["127.0.0.1:9301"\],"transport.compress":true,"skip\_unavailable":true\},"cluster2":\{"seeds":\["127.0.0.1:9302"\]\}\}\}\}\}'

###    创建测试数据进行查询 ###

curl -XPOST "http://localhost:9200/users/\_doc" -H 'Content-Type: application/json' -d'  
\{"name":"user1","age":10\}'

curl -XPOST "http://localhost:9201/users/\_doc" -H 'Content-Type: application/json' -d'  
\{"name":"user2","age":20\}'

curl -XPOST "http://localhost:9202/users/\_doc" -H 'Content-Type: application/json' -d'  
\{"name":"user3","age":30\}'

查询  
GET /users,cluster1:users,cluster2:users/\_search  
\{  
  "query": \{  
    "range": \{  
      "age": \{  
        "gte": 20,  
        "lte": 40  
      \}  
    \}  
  \}  
\}