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();