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：