【Mongodb】分片复制集环境添加新的分片

1. [root@ip-10-1-2-68 etc]# more shard3.conf
   
2. logpath=/usr/local/mongodb/logs/mongo_shard3.log
   
3. logappend=true # need logrotae scripts
   
4. fork=true
   
5. journal=true
   
6. port=27017
   
7. #vvvvv = true
   
8. #diaglog = 3
   
9. dbpath=/usr/local/mongodb/shard3
   
10. pidfilepath=/usr/local/mongodb/logs/mongo_shard3.pid
    
11. bind_ip=10.1.2.68 ---bind ip 修改为自己的机器
    
12. replSet=shard3
    
13. shardsvr=true

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

1. [root@ip-10-1-2-32 etc]# /usr/local/mongodb/bin/mongo 10.1.2.32:27017
   
2. MongoDB shell version v3.6.4
   
3. connecting to: mongodb://10.1.2.32:27017/test
   
4. MongoDB server version: 3.6.4
   
5. Server has startup warnings:
   
6. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]
   
7. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
   
8. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
   
9. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
   
10. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]
    
11. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]
    
12. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
    
13. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
    
14. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]
    
15. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
    
16. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
    
17. 2018-05-08T03:26:23.290+0000 I CONTROL [initandlisten]
    
18. > config_rs3 = {_id: 'shard3', members: [{_id: 0, host: '10.1.2.32:27017', priority:1}, {_id: 1, host: '10.1.2.68:27017'},{_id: 2, host: '10.1.2.175:27017'}]}
    
19. {
    
20. "_id" : "shard3",
    
21. "members" : [
    
22. {
    
23. "_id" : 0,
    
24. "host" : "10.1.2.32:27017",
    
25. "priority" : 1
    
26. },
    
27. {
    
28. "_id" : 1,
    
29. "host" : "10.1.2.68:27017"
    
30. },
    
31. {
    
32. "_id" : 2,
    
33. "host" : "10.1.2.175:27017"
    
34. }
    
35. ]
    
36. }
    
37. > rs.initiate(config_rs3);
    
38. { "ok" : 1 }

1. [root@ip-10-1-2-32 etc]# /usr/local/mongodb/bin/mongo 10.1.2.32:30000
   
2. MongoDB shell version v3.6.4
   
3. connecting to: mongodb://10.1.2.32:30000/test
   
4. MongoDB server version: 3.6.4
   
5. Server has startup warnings:
   
6. 2018-05-03T07:47:09.379+0000 I CONTROL [main]
   
7. 2018-05-03T07:47:09.379+0000 I CONTROL [main] ** WARNING: Access control is not enabled for the database.
   
8. 2018-05-03T07:47:09.379+0000 I CONTROL [main] ** Read and write access to data and configuration is unrestricted.
   
9. 2018-05-03T07:47:09.379+0000 I CONTROL [main] ** WARNING: You are running this process as the root user, which is not recommended.
   
10. 2018-05-03T07:47:09.379+0000 I CONTROL [main]
    
11. 
    
12. mongos> use admin;
    
13. switched to db admin
    
14. mongos> db.runCommand({ addshard: 'shard3/10.1.2.32:27017,10.1.2.68:27017,10.1.2.175:27017'})
    
15. {
    
16. "shardAdded" : "shard3",
    
17. "ok" : 1,
    
18. "$clusterTime" : {
    
19. "clusterTime" : Timestamp(1525750332, 7),
    
20. "signature" : {
    
21. "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
    
22. "keyId" : NumberLong(0)
    
23. }
    
24. },
    
25. "operationTime" : Timestamp(1525750332, 7)
    
26. }
    
27. mongos> db.printShardingStatus(); ---查看新的分片信息
    
28. --- Sharding Status ---
    
29. sharding version: {
    
30. "_id" : 1,
    
31. "minCompatibleVersion" : 5,
    
32. "currentVersion" : 6,
    
33. "clusterId" : ObjectId("5aeabc4db192a4fefca1c888")
    
34. }
    
35. shards:
    
36. { "_id" : "shard1", "host" : "shard1/10.1.2.175:27019,10.1.2.32:27019,10.1.2.68:27019", "state" : 1 }
    
37. { "_id" : "shard2", "host" : "shard2/10.1.2.175:27018,10.1.2.32:27018,10.1.2.68:27018", "state" : 1 }
    
38. { "_id" : "shard3", "host" : "shard3/10.1.2.175:27017,10.1.2.32:27017,10.1.2.68:27017", "state" : 1 }
    
39. active mongoses:
    
40. "3.6.4" : 3
    
41. autosplit:
    
42. Currently enabled: yes
    
43. balancer:
    
44. Currently enabled: yes
    
45. Currently running: no
    
46. Failed balancer rounds in last 5 attempts: 0
    
47. Migration Results for the last 24 hours:
    
48. No recent migrations
    
49. databases:
    
50. { "_id" : "config", "primary" : "config", "partitioned" : true }
    
51. config.system.sessions
    
52. shard key: { "_id" : 1 }
    
53. unique: false
    
54. balancing: true
    
55. chunks:
    
56. shard1 1
    
57. { "_id" : { "$minKey" : 1 } } -->> { "_id" : { "$maxKey" : 1 } } on : shard1 Timestamp(1, 0)
    
58. { "_id" : "test", "primary" : "shard2", "partitioned" : true }
    
59. test.users
    
60. shard key: { "_id" : 1 }
    
61. unique: false
    
62. balancing: true
    
63. chunks:
    
64. shard2 1
    
65. { "_id" : { "$minKey" : 1 } } -->> { "_id" : { "$maxKey" : 1 } } on : shard2 Timestamp(1, 0)

5、设置均衡器

1. # 查看状态
   
2. 
   
3. mongos> sh.isBalancerRunning();
   
4. 
   
5. false
   
6. 
   
7. 
   
8. 
   
9. 
   
10. # 设置均衡器
    
11. 
    
12. mongos> sh.setBalancerState(true);
    
13. 
    
14. mongos> sh.enableBalancing("bg")
15. mongos> sh.getBalancerState()
    true