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2.MongoDB Sharding Cluster分片集群

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分片集群-规划

10个实例:38017-38026
(1)configserver:38018-38020
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)
(3):mongos:
38017
 
Shard节点配置过程
目录创建:
mkdir -p /mongodb/38021/{conf,log,data}
mkdir -p /mongodb/38022/{conf,log,data}
mkdir -p /mongodb/38023/{conf,log,data}
mkdir -p /mongodb/38024/{conf,log,data}
mkdir -p /mongodb/38025/{conf,log,data}
mkdir -p /mongodb/38026/{conf,log,data}
修改配置文件:
第一组复制集搭建:21-23 (1主1从 1Ard)
cat >  /mongodb/38021/conf/mongodb.conf  <<EOF
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:
  bindIp: 192.168.0.10,127.0.0.1
  port: 38021
replication:
  oplogSizeMB: 2048
  replSetName: sh1
sharding:
  clusterRole: shardsvr
processManagement: 
  fork: true
security:
    authorization: enabled
EOF

\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
第二组节点:24-26 (1主1从 1Ard)
cat > /mongodb/38024/conf/mongodb.conf <<EOF
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:
  bindIp: 192.168.0.10,127.0.0.1
  port: 38024
replication:
  oplogSizeMB: 2048
  replSetName: sh2
sharding:
  clusterRole: shardsvr
processManagement: 
  fork: true
security:
    authorization: enabled
EOF

\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
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  
ps -ef |grep mongod

mongo --port 38021
use  admin
config = {_id: sh1, members: [
                          {_id: 0, host: 192.168.0.10:38021},
                          {_id: 1, host: 192.168.0.10:38022},
                          {_id: 2, host: 192.168.0.10:38023,"arbiterOnly":true}]
           }

rs.initiate(config)
  
 mongo --port 38024 
 use admin
config = {_id: sh2, members: [
                          {_id: 0, host: 192.168.0.10:38024},
                          {_id: 1, host: 192.168.0.10:38025},
                          {_id: 2, host: 192.168.0.10:38026,"arbiterOnly":true}]
           }
  
rs.initiate(config)
config节点配置
mkdir -p /mongodb/38018/{conf,log,data}
mkdir -p /mongodb/38019/{conf,log,data}
mkdir -p /mongodb/38020/{conf,log,data}

修改配置文件

cat > /mongodb/38018/conf/mongodb.conf <<EOF
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:
  bindIp: 192.168.0.10,127.0.0.1
  port: 38018
replication:
  oplogSizeMB: 2048
  replSetName: configReplSet
sharding:
  clusterRole: configsvr
processManagement: 
  fork: true
security:
    authorization: enabled
EOF

\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

节点启动,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 

mongod --port 38018 admin
config = {_id: configReplSet, members: [
                          {_id: 0, host: 192.168.0.10:38018},
                          {_id: 1, host: 192.168.0.10:38019},
                          {_id: 2, host: 192.168.0.10:38020}]
           }
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
mongos节点配置
创建目录:

mkdir -p /mongodb/38017/{conf,log,data}

配置文件

cat > /mongodb/38017/conf/mongos.conf <<EOF
systemLog:
  destination: file
  path: /mongodb/38017/log/mongos.log
  logAppend: true
net:
  bindIp: 192.168.0.10,127.0.0.1
  port: 38017
sharding:
  configDB: configReplSet/192.168.0.10:38018,192.168.0.10:38019,192.168.0.10:38020
processManagement: 
  fork: true
EOF

启动mongos

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

分片集群添加节点

连接到其中一个mongos(192.168.0.10),做以下配置
(1)连接到mongos的admin库
#su - mongod
mongo 192.168.0.10:38017/admin
(2)添加分片
db.runCommand( { addshard : "sh1/192.168.0.10:38021,192.168.0.10:38022,192.168.0.10:38023",name:"shard1"} )
db.runCommand( { addshard : "sh2/192.168.0.10:38024,192.168.0.10:38025,192.168.0.10:38026",name:"shard2"} )
(3)列出分片
mongos> db.runCommand( { listshards : 1 } )
(4)整体状态查看
mongos> sh.status();

 

使用分片集群
RANGE分片配置及测试
1.激活数据库分片功能:
mongo --port 38017 admin
admin> ( { enablesharding : "数据库名称"} )
eg:
admin> db.runCommand( { enablesharding : "test" } )
2.指定分片键对集合分片:

### 创建索引
use test
> db.vast.ensureIndex( { id: 1 } )
### 开启分片
use admin
> db.runCommand( { shardcollection : "test.vast",key : {id: 1} } )
3.集合分片验证:

2.MongoDB Sharding Cluster分片集群

原文:https://www.cnblogs.com/fengyuanfei/p/14495513.html

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