当前位置:Gxlcms > 数据库问题 > mongodb 分片技术

mongodb 分片技术

时间:2021-07-01 10:21:17 帮助过:27人阅读

                    MongoDB Sharding Cluster 分片集群

规划:
10个实例:38017-38026

(1)configserver:
3台构成的复制集(1主两从,不支持arbiter)38018-38020(复制集名字configsvr)

(2)shard节点:

sh1:38021-23    (1主两从,其中一个节点为arbiter,复制集名字sh1)
sh2:38024-26    (1主两从,其中一个节点为arbiter,复制集名字sh2)


配置过程
            
shard复制集配置:
2.1目录创建:
mkdir -p /mongodb/38021/conf  /mongodb/38021/log  /mongodb/38021/data
mkdir -p /mongodb/38022/conf  /mongodb/38022/log  /mongodb/38022/data
mkdir -p /mongodb/38023/conf  /mongodb/38023/log  /mongodb/38023/data
mkdir -p /mongodb/38024/conf  /mongodb/38024/log  /mongodb/38024/data
mkdir -p /mongodb/38025/conf  /mongodb/38025/log  /mongodb/38025/data
mkdir -p /mongodb/38026/conf  /mongodb/38026/log  /mongodb/38026/data

2.2修改配置文件:

sh1:
vi /mongodb/38021/conf/mongodb.conf
===============
根据需求修改相应参数:
systemLog:
  destination: file
  path: /mongodb/38021/log/mongodb.log   
  logAppend: true
storage:
  journal:
    enabled: true
  dbPath: /mongodb/38021/data
  directoryPerDB: true
  #engine: wiredTiger
  wiredTiger:
    engineConfig:
      cacheSizeGB: 1
      directoryForIndexes: true
    collectionConfig:
      blockCompressor: zlib
    indexConfig:
      prefixCompression: true
net:
  port: 38021
replication:
  oplogSizeMB: 2048
  replSetName: sh1
sharding:
  clusterRole: shardsvr
processManagement:
  fork: true

===============
cp  /mongodb/38021/conf/mongodb.conf  /mongodb/38022/conf/
cp  /mongodb/38021/conf/mongodb.conf  /mongodb/38023/conf/

sed ‘s#38021#38022#g‘ /mongodb/38022/conf/mongodb.conf -i
sed ‘s#38021#38023#g‘ /mongodb/38023/conf/mongodb.conf -i

sh2:
vi /mongodb/38024/conf/mongodb.conf
========
根据需求修改相应参数:
systemLog:
  destination: file
  path: /mongodb/38024/log/mongodb.log   
  logAppend: true
storage:
  journal:
    enabled: true
  dbPath: /mongodb/38024/data
  directoryPerDB: true
  wiredTiger:
    engineConfig:
      cacheSizeGB: 1
      directoryForIndexes: true
    collectionConfig:
      blockCompressor: zlib
    indexConfig:
      prefixCompression: true
net:
  port: 38024
replication:
  oplogSizeMB: 2048
  replSetName: sh2
sharding:
  clusterRole: shardsvr
processManagement:
  fork: true
========


cp  /mongodb/38024/conf/mongodb.conf  /mongodb/38025/conf/
cp  /mongodb/38024/conf/mongodb.conf  /mongodb/38026/conf/

sed ‘s#38024#38025#g‘ /mongodb/38025/conf/mongodb.conf -i
sed ‘s#38024#38026#g‘ /mongodb/38026/conf/mongodb.conf -i


2.3启动所有节点,并搭建复制集:

mongod -f  /mongodb/38021/conf/mongodb.conf
mongod -f  /mongodb/38022/conf/mongodb.conf
mongod -f  /mongodb/38023/conf/mongodb.conf
mongod -f  /mongodb/38024/conf/mongodb.conf
mongod -f  /mongodb/38025/conf/mongodb.conf
mongod -f  /mongodb/38026/conf/mongodb.conf  



mongo --port 38021

use  admin
config = {_id: ‘sh1‘, members: [
                          {_id: 0, host: ‘10.0.0.53:38021‘},
                          {_id: 1, host: ‘10.0.0.53:38022‘},
                          {_id: 2, host: ‘10.0.0.53:38023‘,"arbiterOnly":true}]
           }

rs.initiate(config)
 
 
 mongo --port 38024
 use admin
config = {_id: ‘sh2‘, members: [
                          {_id: 0, host: ‘10.0.0.53:38024‘},
                          {_id: 1, host: ‘10.0.0.53:38025‘},
                          {_id: 2, host: ‘10.0.0.53:38026‘,"arbiterOnly":true}]
           }
 
rs.initiate(config)

=-=----=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
---3、config节点配置:

3.1目录创建:
mkdir -p /mongodb/38018/conf  /mongodb/38018/log  /mongodb/38018/data
mkdir -p /mongodb/38019/conf  /mongodb/38019/log  /mongodb/38019/data
mkdir -p /mongodb/38020/conf  /mongodb/38020/log  /mongodb/38020/data

3.2修改配置文件:

[mongod@server1 ~]$ vi /mongodb/38018/conf/mongodb.conf

systemLog:
  destination: file
  path: /mongodb/38018/log/mongodb.conf
  logAppend: true
storage:
  journal:
    enabled: true
  dbPath: /mongodb/38018/data
  directoryPerDB: true
  #engine: wiredTiger
  wiredTiger:
    engineConfig:
      cacheSizeGB: 1
      directoryForIndexes: true
    collectionConfig:
      blockCompressor: zlib
    indexConfig:
      prefixCompression: true
net:
  port: 38018
replication:
  oplogSizeMB: 2048
  replSetName: configReplSet
sharding:
  clusterRole: configsvr
processManagement:
  fork: true


cp /mongodb/38018/conf/mongodb.conf /mongodb/38019/conf/
cp /mongodb/38018/conf/mongodb.conf /mongodb/38020/conf/

sed ‘s#38018#38019#g‘ /mongodb/38019/conf/mongodb.conf -i
sed ‘s#38018#38020#g‘ /mongodb/38020/conf/mongodb.conf -i


3.3启动节点,并配置复制集


mongod -f /mongodb/38018/conf/mongodb.conf
mongod -f /mongodb/38019/conf/mongodb.conf
mongod -f /mongodb/38020/conf/mongodb.conf


mongo --port 38018
use  admin

 config = {_id: ‘configReplSet‘, members: [
                          {_id: 0, host: ‘10.0.0.53:38018‘},
                          {_id: 1, host: ‘10.0.0.53:38019‘},
                          {_id: 2, host: ‘10.0.0.53:38020‘}]
           }
rs.initiate(config)  
 
 
注:configserver 可以是一个节点,官方建议复制集。configserver不能有arbiter。
新版本中,要求必须是复制集。
注:mongodb 3.4之后,虽然要求config server为replica set,但是不支持arbiter
=============================================================================

4、mongos节点配置:
4.1创建目录:

mkdir -p /mongodb/38017/conf  /mongodb/38017/log

4.2配置文件


vi /mongodb/38017/conf/mongos.conf
systemLog:
  destination: file
  path: /mongodb/38017/log/mongos.log
  logAppend: true
net:
  port: 38017
sharding:
  configDB: configReplSet/10.0.0.53:38018,10.0.0.53:38019,10.0.0.53:38020
processManagement:
  fork: true
         
4.3启动mongos

 mongos -f /mongodb/38017/conf/mongos.conf

5、分片集群操作:

 连接到其中一个mongos(10.0.0.51),做以下配置
(1)连接到mongs的admin数据库
# su - mongod
$ mongo 10.0.0.51:38017/admin

(2)添加分片
db.runCommand( { addshard : "sh1/10.0.0.51:38021,10.0.0.51:38022,10.0.0.51:38023",name:"shard1"} )

db.runCommand( { addshard : "sh2/10.0.0.51:38024,10.0.0.51:38025,10.0.0.51:38026",name:"shard2"} )


(3)列出分片
mongos> db.runCommand( { listshards : 1 } )
 
 
(4)整体状态查看
mongos> sh.status();
 

mongodb 分片技术

标签:cluster   ble   block   directory   zlib   tin   app   ati   list   

人气教程排行