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This article introduces how to configure sharding slicing in MongoDB 3.4.The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.

1. Create a copy set of configuration services

Create a data directory, config directory for configuration services, and shard directory for sharding data nodes

[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

Start each node of the configuration service replica set

[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

Connect to the configuration server and perform initialization

[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

two。 Create a fragmented copy set

Start each node of the replica set

[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

A node connected to a fragmented replica set to perform the replica set initialization operation

[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. Connect to the sharding cluster through mongos

[mongo@MySQL01] $mongos-- configdb fire/MySQL01:10001,MySQL01:10002,MySQL01:10003-- port 30000

4. Add shards to the cluster

Connect to mongos and add the replica set created above to the cluster

[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}

Open the sharding of the specified database

Enable sharding function for sale database

Mongos > sh.enableSharding ("sale")

{"ok": 1}

Create a collection in the sale database

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})

Perform range fragmentation for the created collection

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."

}

An error occurred. You need to create an index on the fragment field of the collection.

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

}

Perform fragmentation on a collection

Mongos > sh.shardCollection ("sale.dept", {id: 1})

{"collectionsharded": "sale.dept", "ok": 1}

About how to configure sharding fragments in MongoDB 3.4.This is it. I hope the above content can be helpful to everyone and learn more knowledge. If you think the article is good, you can share it for more people to see.

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