Shulou(Shulou.com)06/01 Report--

1. Create a new shard3 profile on each node

[root@ip-10-1-2-68 etc] # more shard3.conf

Logpath=/usr/local/mongodb/logs/mongo_shard3.log

Logappend=true # need logrotae scripts

Fork=true

Journal=true

Port=27017

# vvvvv = true

# diaglog = 3

Dbpath=/usr/local/mongodb/shard3

Pidfilepath=/usr/local/mongodb/logs/mongo_shard3.pid

Bind_ip=10.1.2.68-bind ip modified to its own machine

ReplSet=shard3

Shardsvr=true

two。 Each node starts the shard3 service

[root@ip-10-1-2-68 etc] # / usr/local/mongodb/bin/mongod-f shard3.conf

3. Log in to the first node and build the replication set of shard3

[root@ip-10-1-2-32 etc] # / usr/local/mongodb/bin/mongo 10.1.2.32 usr/local/mongodb/bin/mongo 27017

MongoDB shell version v3.6.4

Connecting to: mongodb://10.1.2.32:27017/test

MongoDB server version: 3.6.4

Server has startup warnings:

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] * * WARNING: Access control is not enabled for the database.

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] * * Read and write access to data and configuration is unrestricted.

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] * * WARNING: You are running this process as the root user, which is not recommended.

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] * * WARNING: / sys/kernel/mm/transparent_hugepage/enabled is' always'.

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] * * We suggest setting it to 'never'

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] * * WARNING: / sys/kernel/mm/transparent_hugepage/defrag is' always'.

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] * * We suggest setting it to 'never'

2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]

> config_rs3 = {_ id: 'shard3', members: [{_ id: 0, host:' 10.1.2.32 shard3', members 27017, priority:1}, {_ id: 1, host: '10.1.2.68 shard3', members 27017'}, {_ id: 2, host: '10.1.2.175VR 27017'}]}

{

"_ id": "shard3"

"members": [

{

"_ id": 0

"host": "10.1.2.32 purl 27017"

"priority": 1

}

{

"_ id": 1

"host": "10.1.2.68 purl 27017"

}

{

"_ id": 2

"host": "10.1.2.175 purl 27017"

}

]

}

> rs.initiate (config_rs3)

{"ok": 1}

4. Log in to the mongs port of the first node and add shard3 shards to the shard group

[root@ip-10-1-2-32 etc] # / usr/local/mongodb/bin/mongo 10.1.2.32 usr/local/mongodb/bin/mongo 30000

MongoDB shell version v3.6.4

Connecting to: mongodb://10.1.2.32:30000/test

MongoDB server version: 3.6.4

Server has startup warnings:

2018-05-03T07:47:09.379+0000 I CONTROL [main]

2018-05-03T07:47:09.379+0000 I CONTROL [main] * * WARNING: Access control is not enabled for the database.

2018-05-03T07:47:09.379+0000 I CONTROL [main] * * Read and write access to data and configuration is unrestricted.

2018-05-03T07:47:09.379+0000 I CONTROL [main] * * WARNING: You are running this process as the root user, which is not recommended.

2018-05-03T07:47:09.379+0000 I CONTROL [main]

Mongos > use admin

Switched to db admin

Mongos > db.runCommand ({addshard: 'shard3/10.1.2.32:27017,10.1.2.68:27017,10.1.2.175:27017'})

{

"shardAdded": "shard3"

"ok": 1

"$clusterTime": {

"clusterTime": Timestamp (1525750332, 7)

"signature": {

"hash": BinData (0, "AAAAAAAAAAAAAAAAAAAAAAAAAAA=")

"keyId": NumberLong (0)

}

}

"operationTime": Timestamp (1525750332, 7)

}

Mongos > db.printShardingStatus ();-View new shard information

-Sharding Status

Sharding version: {

"_ id": 1

"minCompatibleVersion": 5

"currentVersion": 6

"clusterId": ObjectId ("5aeabc4db192a4fefca1c888")

}

Shards:

{"_ id": "shard1", "host": "shard1/10.1.2.175:27019,10.1.2.32:27019,10.1.2.68:27019", "state": 1}

{"_ id": "shard2", "host": "shard2/10.1.2.175:27018,10.1.2.32:27018,10.1.2.68:27018", "state": 1}

{"_ id": "shard3", "host": "shard3/10.1.2.175:27017,10.1.2.32:27017,10.1.2.68:27017", "state": 1}

Active mongoses:

"3.6.4": 3

Autosplit:

Currently enabled: yes

Balancer:

Currently enabled: yes

Currently running: no

Failed balancer rounds in last 5 attempts: 0

Migration Results for the last 24 hours:

No recent migrations

Databases:

{"_ id": "config", "primary": "config", "partitioned": true}

Config.system.sessions

Shard key: {"_ id": 1}

Unique: false

Balancing: true

Chunks:

Shard1 1

{"_ id": {"$minKey": 1}}-- > > {"_ id": {"$maxKey": 1}} on: shard1 Timestamp (1,0)

{"_ id": "test", "primary": "shard2", "partitioned": true}

Test.users

Shard key: {"_ id": 1}

Unique: false

Balancing: true

Chunks:

Shard2 1

{"_ id": {"$minKey": 1}}-- > > {"_ id": {"$maxKey": 1}} on: shard2 Timestamp (1,0)

5. Set up equalizer

# View status

Mongos > sh.isBalancerRunning ()

False

# set equalizer

Mongos > sh.setBalancerState (true)

Mongos > sh.enableBalancing ("bg") mongos > sh.getBalancerState ()

True

Reference: https://docs.mongodb.com/manual/reference/method/sh.getBalancerState/

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