MongoDB分片集群部署详解
一、环境说明
1、我们prod环境MongoDB的集群架构是做的分片集群的部署，但是目前我们没有分片，即所有数据都在一个分片上，后期如果数量大，需要分配，集群随时可以分片，对业务方透明
2、各个角色的部署情况
| 角色 | IP | 端口 | 复制集名称 |
|---|---|---|---|
| mongos | 172.21.244.101，172.21.244.102，172.21.244.94 | 27000 | 无 |
| configserver | 172.21.244.101，172.21.244.102，172.21.244.94 | 27100 | repl_configsvr |
| 存储节点（shard） | 172.21.244.101，172.21.244.102，172.21.244.94 | 27101 | shard1 |
3、MongoDB版本
mongos>db.version() 4.0.4-62-g7e345a7
二、基础信息准备
0、系统优化
echo"never">/sys/kernel/mm/transparent_hugepage/enabled echo"never">/sys/kernel/mm/transparent_hugepage/defrag
1、下载MongoDB二进制文件
cd/chj/app wgetops.chehejia.com:9090/pkg/chj_mongodb_4.0.4.tar.gz tar-zxvfchj_mongodb_4.0.4.tar.gz
2、相关目录建立
#建立base目录 mkdir/chj/data/mongodb/chj_db #把MongoDB二进制文件移动到base目录下的bin文件夹 mvchj_mongodb_4.0.4/bin/chj/data/mongodb/chj_db/bin #建立认证文件目录 mkdir/chj/data/mongodb/chj_db/auth #建立配置文件目录 mkdir/chj/data/mongodb/chj_db/conf #建立configserver的data和日志目录 mkdir/chj/data/mongodb/chj_db/config/data-p mkdir/chj/data/mongodb/chj_db/config/log #建立mongos的日志目录 mkdir/chj/data/mongodb/chj_db/mongos/log-p #建立数据节点data和日志目录 mkdir/chj/data/mongodb/chj_db/shard1/data-p mkdir/chj/data/mongodb/chj_db/shard1/log
3、相关配置文件编写
A、mongos的配置文件编写
vim/chj/data/mongodb/chj_db/conf/mongos.conf systemLog: destination:file logAppend:true path:/chj/data/mongodb/chj_db/mongos/log/mongos.log processManagement: fork:true#forkandruninbackground pidFilePath:/chj/data/mongodb/chj_db/mongos/log/mongos.pid#locationofpidfile timeZoneInfo:/usr/share/zoneinfo net: port:27000 bindIpAll:true maxIncomingConnections:1000 unixDomainSocket: enabled:true pathPrefix:/chj/data/mongodb/chj_db/mongos/log filePermissions:0700 security: keyFile:/chj/data/mongodb/chj_db/auth/keyfile.key #authorization:enabled #replication: sharding: configDB:repl_configsvr/172.21.244.101:27100,172.21.244.102:27100,172.21.244.94:27100
B、configserver的配置文件编写
vim/chj/data/mongodb/chj_db/conf/config.conf systemLog: destination:file logAppend:true path:/chj/data/mongodb/chj_db/config/log/congigsrv.log storage: dbPath:/chj/data/mongodb/chj_db/config/data journal: enabled:true wiredTiger: engineConfig: directoryForIndexes:true processManagement: fork:true#forkandruninbackground pidFilePath:/chj/data/mongodb/chj_db/config/log/configsrv.pid#locationofpidfile timeZoneInfo:/usr/share/zoneinfo net: port:27100 bindIp:0.0.0.0#Enter0.0.0.0,::tobindtoallIPv4andIPv6addressesor,alternatively,usethenet.bindIpAllsetting. #bindIpAll:true maxIncomingConnections:1000 unixDomainSocket: enabled:true pathPrefix:/chj/data/mongodb/chj_db/config/data filePermissions:0700 security: keyFile:/chj/data/mongodb/chj_db/auth/keyfile.key authorization:enabled replication: replSetName:repl_configsvr sharding: clusterRole:configsvr
C、存储节点的配置文件编写
vim/chj/data/mongodb/chj_db/conf/shard1.conf systemLog: destination:file logAppend:true path:/chj/data/mongodb/chj_db/shard1/log/shard1.log storage: dbPath:/chj/data/mongodb/chj_db/shard1/data journal: enabled:true wiredTiger: engineConfig: directoryForIndexes:true processManagement: fork:true#forkandruninbackground pidFilePath:/chj/data/mongodb/chj_db/shard1/log/shard1.pid#locationofpidfile timeZoneInfo:/usr/share/zoneinfo net: port:27101 bindIp:0.0.0.0#Enter0.0.0.0,::tobindtoallIPv4andIPv6addressesor,alternatively,usethenet.bindIpAllsetting. #bindIpAll:true maxIncomingConnections:1000 unixDomainSocket: enabled:true pathPrefix:/chj/data/mongodb/chj_db/shard1/data filePermissions:0700 security: keyFile:/chj/data/mongodb/chj_db/auth/keyfile.key authorization:enabled replication: replSetName:shard1 sharding: clusterRole:shardsvr
4、生产key认证文件
echo"chj123456">/chj/data/mongodb/chj_db/auth/keyfile.key #设置文件的权限为400，不然服务无法启动 chmod400/chj/data/mongodb/chj_db/auth/keyfile.key
三、集群初始化
1、启动configserver服务
/chj/data/mongodb/chj_db/bin/mongod-f/chj/data/mongodb/chj_db/conf/config.conf
2、初始化configserver集群
#登录其中一个configserver节点
/chj/data/mongodb/chj_db/bin/mongo--port27100
#配置集群
config={_id:"repl_configsvr",members:[{_id:0,host:"172.21.244.101:27100"},{_id:1,host:"172.21.244.102:27100"},{_id:2,host:"172.21.244.94:27100"}]}
#初始化集群
rs.initiate(config)
PS：
结果输出如下，说明集群初始化成功，可以通过rs.status()命令查看集群状态
{
"ok":1,
"$gleStats":{
"lastOpTime":Timestamp(1557538260,1),
"electionId":ObjectId("000000000000000000000000")
},
"lastCommittedOpTime":Timestamp(0,0)
}
3、启动存储节点服务
/chj/data/mongodb/chj_db/bin/mongod-f/chj/data/mongodb/chj_db/conf/shard1.conf
4、初始化存储集群
#登录你希望是主节点的服务器
/chj/data/mongodb/chj_db/bin/mongo--port27101
#配置集群
config={_id:"shard1",members:[{_id:0,host:"172.21.244.101:27101"},{_id:1,host:"172.21.244.102:27101"},{_id:2,host:"172.21.244.94:27101",arbiterOnly:true}]}
#初始化集群
rs.initiate(config)
PS：
结果输出如下，说明集群初始化成功，可以通过rs.status()命令查看集群状态
{"ok":1}
5、添加存储集群的管理账号
登录主节点
/chj/data/mongodb/chj_db/bin/mongo--port27101
useadmin
db.createUser(
{
user:"root",
pwd:"123456",
roles:[{role:"root",db:"admin"}]
}
)
6、启动mongos服务
/chj/data/mongodb/chj_db/bin/mongos-f/chj/data/mongodb/chj_db/conf/mongos.conf
7、添加configserver的管理账号
登录任意一个mongos节点
/chj/data/mongodb/chj_db/bin/mongo--port27000
useadmin
db.createUser(
{
user:"root",
pwd:"123456",
roles:[{role:"root",db:"admin"}]
}
)
8、把存储节点添加到mongos
登录任意一个mongos节点（如果是在上一步的窗口，需要退出重新登录）
/chj/data/mongodb/chj_db/bin/mongo--port27000
useadmin
db.auth('root','123456')
#添加分片
sh.addShard('shard1/172.21.244.101:27101,172.21.244.102:27101,172.21.244.94:27101')
#查看分片状态
sh.status()
四、交付业务方
1、建立应用账号
登录任意一个mongos节点
/chj/data/mongodb/chj_db/bin/mongo--port27000
useadmin
db.auth('root','123456')
#切到业务数据库
usechj_db
#建立读写账号
db.createUser(
{
user:"chj_db_rw",
pwd:"123456",
roles:[
{role:"readWrite",db:"chj_db"},
{role:"dbOwner",db:"chj_db"}
]
}
)
#建立只读账号(根据业务需求确认是否需要)
db.createUser(
{
user:"chj_db_r",
pwd:"123456",
roles:[{role:"read",db:"chj_db"}]
}
)
2、交付开发人员信息
连接地址：172.21.244.101:27000，172.21.244.102:27000，172.21.244.94:27000 库名：chj_db 账号：chj_db_rw 密码：123456
五、数据库启用分片
如果后期业务量大，需要开启分片，配置如下
#指定需要分片的数据库
mongos>sh.enableSharding("chj_db")
{
"ok":1,
"operationTime":Timestamp(1557546835,3),
"$clusterTime":{
"clusterTime":Timestamp(1557546835,3),
"signature":{
"hash":BinData(0,"bkrrr8Kxrr9j9udrDc/hURHld38="),
"keyId":NumberLong("6689575940508352541")
}
}
}
#在chj_db数据库和users集合中创建了name和age为升序的片键
mongos>sh.shardCollection("chj_db.users",{name:1,age:1})
{
"collectionsharded":"chj_db.users",
"collectionUUID":UUID("59c0b99f-efff-4132-b489-f6c7e3d98f42"),
"ok":1,
"operationTime":Timestamp(1557546861,12),
"$clusterTime":{
"clusterTime":Timestamp(1557546861,12),
"signature":{
"hash":BinData(0,"UBB1A/YODnmXwG5eAhgNLcKVzug="),
"keyId":NumberLong("6689575940508352541")
}
}
}
#查看分片情况
mongos>sh.status()
---ShardingStatus---
shardingversion:{
"_id":1,
"minCompatibleVersion":5,
"currentVersion":6,
"clusterId":ObjectId("5cd625e0da695346d740f749")
}
shards:
{"_id":"shard1","host":"shard1/172.21.244.101:27101,172.21.244.102:27101","state":1}
activemongoses:
"4.0.4-62-g7e345a7":3
autosplit:
Currentlyenabled:yes
balancer:
Currentlyenabled:yes
Currentlyrunning:no
Failedbalancerroundsinlast5attempts:0
MigrationResultsforthelast24hours:
Norecentmigrations
databases:
{"_id":"chj_db","primary":"shard1","partitioned":true,"version":{"uuid":UUID("82088bc7-7b98-4033-843d-7058d8d959f6"),"lastMod":1}}
chj_db.users
shardkey:{"name":1,"age":1}
unique:false
balancing:true
chunks:
shard11
{"name":{"$minKey":1},"age":{"$minKey":1}}-->>{"name":{"$maxKey":1},"age":{"$maxKey":1}}on:shard1Timestamp(1,0)
{"_id":"config","primary":"config","partitioned":true}
config.system.sessions
shardkey:{"_id":1}
unique:false
balancing:true
chunks:
shard11
{"_id":{"$minKey":1}}-->>{"_id":{"$maxKey":1}}on:shard1Timestamp(1,0)
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。