MongoDB 3.4配置sharding分片

向右看齐 2024-04-18 01:46 4阅读 0赞

1.  创建配置服务副本集  
 创建数据目录，config目录供配置服务使用，shard目录供分片数据节点使用  
\[root@MySQL01 ~\]\# su - mongo  
\[mongo@MySQL01 ~\]$ cd /data/db  
\[mongo@MySQL01 db\]$ mkdir config01  
\[mongo@MySQL01 db\]$ mkdir config02  
\[mongo@MySQL01 db\]$ mkdir config03  
\[mongo@MySQL01 db\]$ mkdir shard01  
\[mongo@MySQL01 db\]$ mkdir shard02  
\[mongo@MySQL01 db\]$ mkdir shard03  
  
 启动配置服务副本集的每个节点  
\[mongo@MySQL01 ~\]$ mongod --configsvr --replSet fire --dbpath /data/db/config01 --port 10001  
  
  
\[mongo@MySQL01 ~\]$ mongod --configsvr --replSet fire --dbpath /data/db/config02 --port 10002  
  
  
\[mongo@MySQL01 ~\]$ mongod --configsvr --replSet fire --dbpath /data/db/config03 --port 10003  
   
 连接到配置服务器，执行初始化操作   
 \[mongo@MySQL01 ~\]$ mongo localhost:10001  
MongoDB shell version v3.4.10  
connecting to: localhost:10001  
MongoDB server version: 3.4.10

> rs.initiate(  
...   \{   
...     \_id: "fire",  
...     configsvr: true,  
...     members: \[  
...       \{ \_id : 0, host : "MySQL01:10001" \},  
...       \{ \_id : 1, host : "MySQL01:10002" \},  
...       \{ \_id : 2, host : "MySQL01:10003" \}  
...     \]  
...   \}  
... )  
\{ "ok" : 1 \}  
fire:SECONDARY> exit  
bye

2. 创建分片副本集  
 启动副本集的每个节点   
\[mongo@MySQL01 ~\]$ mongod --shardsvr --replSet flame --port 20001 --dbpath /data/db/shard01  
  
  
\[mongo@MySQL01 ~\]$ mongod --shardsvr --replSet flame --port 20002 --dbpath /data/db/shard02  
  
  
\[mongo@MySQL01 ~\]$ mongod --shardsvr --replSet flame --port 20003 --dbpath /data/db/shard03

连接到分片副本集的一个节点，执行副本集初始化操作   
 \[mongo@MySQL01 ~\]$ mongo localhost:20001  
MongoDB shell version v3.4.10  
connecting to: localhost:20001  
MongoDB server version: 3.4.10  
> rs.initiate(  
...   \{   
...     \_id : "flame",  
...     members: \[  
...       \{ \_id : 0, host : "MySQL01:20001" \},  
...       \{ \_id : 1, host : "MySQL01:20002" \},  
...       \{ \_id : 2, host : "MySQL01:20003" \}  
...     \]  
...   \}  
... )  
\{ "ok" : 1 \}  
flame:OTHER> exit  
bye

3. 通过 mongos 连接到分片集群  
\[mongo@MySQL01 ~\]$ mongos --configdb fire/MySQL01:10001,MySQL01:10002,MySQL01:10003 --port 30000  
   
 4. 增加分片到集群   
连接到 mongos  ， 增加上面创建的副本集到集群中   
\[mongo@MySQL01 ~\]$ mongo localhost:30000  
MongoDB shell version v3.4.10  
connecting to: localhost:30000  
MongoDB server version: 3.4.10

mongos> sh.addShard( "flame/MySQL01:40001")  
\{ "shardAdded" : "flame", "ok" : 1 \}

开启指定数据库的分片

为sale数据库开启分片功能   
 mongos> sh.enableSharding("sale")  
\{ "ok" : 1 \}

在sale数据库里面创建一个集合   
mongos> use sale  
switched to db sale  
mongos>   
mongos> show collections  
mongos> db.dept.insert(\{"id":10\})  
WriteResult(\{ "nInserted" : 1 \})  
mongos> db.dept.insert(\{"id":20\})  
WriteResult(\{ "nInserted" : 1 \})  
mongos> db.dept.insert(\{"id":30\})  
WriteResult(\{ "nInserted" : 1 \})

为创建好的 集合执行范围分片   
 mongos> sh.shardCollection("sale.dept", \{ id : 1 \} )  
\{   
"proposedKey" : \{   
"id" : 1  
\},  
"curIndexes" : \[  
\{   
"v" : 2,  
"key" : \{   
"\_id" : 1  
\},  
"name" : "\_id\_",  
"ns" : "sale.dept"  
\}  
\],  
"ok" : 0,  
"errmsg" : "please create an index that starts with the shard key before sharding."  
\}

发生报错，需要对集合的分片字段创建索引   
 mongos> db.dept.ensureIndex(\{"id" : 1\})  
\{   
"raw" : \{   
"flame/MySQL01:20001,MySQL01:20002,MySQL01:20003" : \{   
"createdCollectionAutomatically" : false,  
"numIndexesBefore" : 1,  
"numIndexesAfter" : 2,  
"ok" : 1,  
"$gleStats" : \{   
"lastOpTime" : \{   
"ts" : Timestamp(1512224813, 1),  
"t" : NumberLong(1)  
\},  
"electionId" : ObjectId("7fffffff0000000000000001")  
\}  
\}  
\},  
"ok" : 1  
\}

对集合执行分片   
 mongos> sh.shardCollection("sale.dept", \{ id : 1 \} )  
\{ "collectionsharded" : "sale.dept", "ok" : 1 \}

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转载于:http://blog.itpub.net/26506993/viewspace-2148195/