mongodb sharding 怎样连接
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发布时间：2022-04-30 21:19
共2个回答
懂视网
时间：2022-05-01 01:40
[mongodb@node1 ~]$ cat /etc/issue CentOS release 6.4 (Final) Kernel on an m [mongodb@node1 ~]$ uname -r 2.6.32-358.el6.x86_64 [mongodb@node1 ~]$ uname -m x86_64
架构如下图，之前的架构图找不到了，就凑合看下面的表格吧。。
192.168.75.128、shard1:10001、shard2:10002、shard3:10003、configsvr:10004、mongos:10005
注：shard1主节点，shard2仲裁，shard3副本
192.168.75.129、shard1:10001、shard2:10002、shard3:10003、configsvr:10004、mongos:10005
注：shard1副本，shard2主节点，shard3仲裁
192.168.75.130、shard1:10001、shard2:10002、shard3:10003、configsvr:10004、mongos:10005
注：shard1仲裁，shard2副本，shard3主节点
node1：192.168.75.128
node2：192.168.75.129
node3：192.168.75.130
创建mongodb用户
[root@node1 ~]# groupadd mongodb [root@node1 ~]# useradd -g mongodb mongodb [root@node1 ~]# mkdir /data [root@node1 ~]# chown mongodb.mongodb /data -R [root@node1 ~]# su - mongodb
创建目录和文件
[mongodb@node1 ~]$ mkdir /data/{config,shard1,shard2,shard3,mongos,logs,configsvr,keyfile} -pv
[mongodb@node1 ~]$ touch /data/keyfile/zxl
[mongodb@node1 ~]$ touch /data/logs/shard{1..3}.log
[mongodb@node1 ~]$ touch /data/logs/{configsvr,mongos}.log
[mongodb@node1 ~]$ touch /data/config/shard{1..3}.conf
[mongodb@node1 ~]$ touch /data/config/{configsvr,mongos}.conf下载mongodb
[mongodb@node1 ~]$ wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel62-3.2.3.tgz [mongodb@node3 ~]$ tar fxz mongodb-linux-x86_64-rhel62-3.2.3.tgz -C /data [mongodb@node3 ~]$ ln -s /data/mongodb-linux-x86_64-rhel62-3.2.3 /data/mongodb
配置mongodb环境变量
[mongodb@node1 ~]$ echo "export PATH=$PATH:/data/mongodb/bin" >> ~/.bash_profile [mongodb@node1 data]$ source ~/.bash_profile
shard1.conf配置文件内容如下：
[mongodb@node1 ~]$ cat /data/config/shard1.conf systemLog: destination: file path: /data/logs/shard1.log logAppend: true processManagement: fork: true pidFilePath: "/data/shard1/shard1.pid" net: port: 10001 storage: dbPath: "/data/shard1" engine: wiredTiger journal: enabled: true directoryPerDB: true operationProfiling: slowOpThresholdMs: 10 mode: "slowOp" #security: # keyFile: "/data/keyfile/zxl" # clusterAuthMode: "keyFile" replication: oplogSizeMB: 50 replSetName: "shard1_zxl" secondaryIndexPrefetch: "all"
shard2.conf配置文件内容如下：
[mongodb@node1 ~]$ cat /data/config/shard2.conf systemLog: destination: file path: /data/logs/shard2.log logAppend: true processManagement: fork: true pidFilePath: "/data/shard2/shard2.pid" net: port: 10002 storage: dbPath: "/data/shard2" engine: wiredTiger journal: enabled: true directoryPerDB: true operationProfiling: slowOpThresholdMs: 10 mode: "slowOp" #security: # keyFile: "/data/keyfile/zxl" # clusterAuthMode: "keyFile" replication: oplogSizeMB: 50 replSetName: "shard2_zxl" secondaryIndexPrefetch: "all"
shard3.conf配置文件内容如下：
[mongodb@node1 ~]$ cat /data/config/shard2.conf systemLog: destination: file path: /data/logs/shard3.log logAppend: true processManagement: fork: true pidFilePath: "/data/shard3/shard3.pid" net: port: 10003 storage: dbPath: "/data/shard3" engine: wiredTiger journal: enabled: true directoryPerDB: true operationProfiling: slowOpThresholdMs: 10 mode: "slowOp" #security: # keyFile: "/data/keyfile/zxl" # clusterAuthMode: "keyFile" replication: oplogSizeMB: 50 replSetName: "shard3_zxl" secondaryIndexPrefetch: "all"
configsvr.conf配置文件内容如下：
[mongodb@node1 ~]$ cat /data/config/configsvr.conf systemLog: destination: file path: /data/logs/configsvr.log logAppend: true processManagement: fork: true pidFilePath: "/data/configsvr/configsvr.pid" net: port: 10004 storage: dbPath: "/data/configsvr" engine: wiredTiger journal: enabled: true #security: # keyFile: "/data/keyfile/zxl" # clusterAuthMode: "keyFile" sharding: clusterRole: configsvr
mongos.conf配置文件内容如下：
[mongodb@node3 ~]$ cat /data/config/mongos.conf systemLog: destination: file path: /data/logs/mongos.log logAppend: true processManagement: fork: true pidFilePath: /data/mongos/mongos.pid net: port: 10005 sharding: configDB: 192.168.75.128:10004,192.168.75.129:10004,192.168.75.130:10004 #security: # keyFile: "/data/keyfile/zxl" # clusterAuthMode: "keyFile"
注：以上操作只是在node1机器上操作，请把上面这些操作步骤在另外2台机器操作一下，包括创建用户创建目录文件以及安装mongodb等，以及文件拷贝到node2、node3对应的目录下，拷贝之后查看一下文件的属主属组是否为mongodb。关于configsvr的问题，官方建议1台或者3台，反正就是为奇数，你懂得。不懂的话自行搜索mongodb官方就知道答案了，链接找不到了，自己找找吧。
启动各个机器节点的mongod，shard1、shard2、shard3
[mongodb@node1 ~]$ mongod -f /data/config/shard1.conf mongod: /usr/lib64/libcrypto.so.10: no version information available (required by m mongod: /usr/lib64/libcrypto.so.10: no version information available (required by m mongod: /usr/lib64/libssl.so.10: no version information available (required by mong mongod: relocation error: mongod: symbol TLSv1_1_client_method, version libssl.so.1n file libssl.so.10 with link time reference
注：无法启动，看到相应的提示后
解决：安装openssl即可，三台机器均安装openssl-devel
[mongodb@node1 ~]$ su - root Password: [root@node1 ~]# yum install openssl-devel -y
再次切换mongodb用户启动三台机器上的mongod，shard1、shard2、shard3
[mongodb@node1 ~]$ mongod -f /data/config/shard1.conf about to fork child process, waiting until server is ready for connections. forked process: 1737 child process started successfully, parent exiting [mongodb@node1 ~]$ mongod -f /data/config/shard2.conf about to fork child process, waiting until server is ready for connections. forked process: 1760 child process started successfully, parent exiting [mongodb@node1 ~]$ mongod -f /data/config/shard3.conf about to fork child process, waiting until server is ready for connections. forked process: 1783 child process started successfully, parent exiting
进入node1机器上的mongod:10001登录
[mongodb@node1 ~]$ mongo --port 10001 MongoDB shell version: 3.2.3 connecting to: 127.0.0.1:10001/test Welcome to the MongoDB shell. For interactive help, type "help". For more comprehensive documentation, see http://docs.mongodb.org/ Questions? Try the support group http://groups.google.com/group/mongodb-user Server has startup warnings: 2016-03-08T13:28:18.508+0800 I CONTROL [initandlisten] 2016-03-08T13:28:18.508+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/epage/enabled is ‘always‘. 2016-03-08T13:28:18.508+0800 I CONTROL [initandlisten] ** We suggest settin 2016-03-08T13:28:18.508+0800 I CONTROL [initandlisten] 2016-03-08T13:28:18.508+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/epage/defrag is ‘always‘. 2016-03-08T13:28:18.508+0800 I CONTROL [initandlisten] ** We suggest settin 2016-03-08T13:28:18.508+0800 I CONTROL [initandlisten]
注：提示warning......
解决：在三台机器上均操作一下内容即可
[mongodb@node2 config]$ su - root Password [root@node1 ~]# echo never > /sys/kernel/mm/transparent_hugepage/enabled [root@node1 ~]# echo never > /sys/kernel/mm/transparent_hugepage/defrag
关闭三台机器上的mongod实例，然后再次启动三台机器上mongod实例即可。
[mongodb@node1 ~]$ netstat -ntpl|grep mongo|awk ‘{print $NF}‘|awk -F‘/‘ ‘{print $1}‘|xargs kill
[mongodb@node1 ~]$ mongod -f /data/config/shard1.conf
[mongodb@node1 ~]$ mongod -f /data/config/shard2.conf
[mongodb@node1 ~]$ mongod -f /data/config/shard3.conf配置复制集
node1机器上操作配置复制集
[mongodb@node1 config]$ mongo --port 10001
MongoDB shell version: 3.2.3
connecting to: 127.0.0.1:10001/test
> use admin
switched to db admin
> config = { _id:"shard1_zxl", members:[
... ... {_id:0,host:"192.168.75.128:10001"},
... ... {_id:1,host:"192.168.75.129:10001"},
... ... {_id:2,host:"192.168.75.130:10001",arbiterOnly:true}
... ... ]
... ... }
{
"_id" : "shard1_zxl",
"members" : [
{
"_id" : 0,
"host" : "192.168.75.128:10001"
},
{
"_id" : 1,
"host" : "192.168.75.129:10001"
},
{
"_id" : 2,
"host" : "192.168.75.130:10001",
"arbiterOnly" : true
}
]
}
> rs.initiate(con
config connect( connectionURLTheSame( constructor
> rs.initiate(config)
{ "ok" : 1 }node2机器上操作配置复制集
[mongodb@node2 config]$ mongo --port 10002
MongoDB shell version: 3.2.3
connecting to: 127.0.0.1:10002/test
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
http://docs.mongodb.org/
Questions? Try the support group
http://groups.google.com/group/mongodb-user
> use admin
switched to db admin
> config = { _id:"shard2_zxl", members:[
... ... {_id:0,host:"192.168.75.129:10002"},
... ... {_id:1,host:"192.168.75.130:10002"},
... ... {_id:2,host:"192.168.75.128:10002",arbiterOnly:true}
... ... ]
... ... }
{
"_id" : "shard2_zxl",
"members" : [
{
"_id" : 0,
"host" : "192.168.75.129:10002"
},
{
"_id" : 1,
"host" : "192.168.75.130:10002"
},
{
"_id" : 2,
"host" : "192.168.75.128:10002",
"arbiterOnly" : true
}
]
}
> rs.initiate(config)
{ "ok" : 1 }node3机器上操作配置复制集
[mongodb@node3 config]$ mongo --port 10003
MongoDB shell version: 3.2.3
connecting to: 127.0.0.1:10003/test
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
http://docs.mongodb.org/
Questions? Try the support group
http://groups.google.com/group/mongodb-user
> use admin
switched to db admin
> config = {_id:"shard3_zxl", members:[
... ... {_id:0,host:"192.168.75.130:10003"},
... ... {_id:1,host:"192.168.75.128:10003"},
... ... {_id:2,host:"192.168.75.129:10003",arbiterOnly:true}
... ... ]
... ... }
{
"_id" : "shard3_zxl",
"members" : [
{
"_id" : 0,
"host" : "192.168.75.130:10003"
},
{
"_id" : 1,
"host" : "192.168.75.128:10003"
},
{
"_id" : 2,
"host" : "192.168.75.129:10003",
"arbiterOnly" : true
}
]
}
> rs.initiate(config)
{ "ok" : 1 }注：以上是配置rs复制集，相关命令如：rs.status()，查看各个复制集的状况
启动三台机器上的configsvr和mongos节点
[mongodb@node1 logs]$ mongod -f /data/config/configsvr.conf about to fork child process, waiting until server is ready for connections. forked process: 6317 child process started successfully, parent exiting [mongodb@node1 logs]$ mongos -f /data/config/mongos.conf about to fork child process, waiting until server is ready for connections. forked process: 6345 child process started successfully, parent exiting
配置shard分片
在node1机器上配置shard分片
[mongodb@node1 config]$ mongo --port 10005
MongoDB shell version: 3.2.3
connecting to: 127.0.0.1:10005/test
mongos> use admin
switched to db admin
mongos> db.runCommand({addshard:"shard1_zxl/192.168.75.128:10001,192.168.75.129:10001,192.168.75.130:10001"});
{ "shardAdded" : "shard1_zxl", "ok" : 1 }
mongos> db.runCommand({addshard:"shard2_zxl/192.168.75.128:10002,192.168.75.129:10002,192.168.75.130:10002"});
{ "shardAdded" : "shard2_zxl", "ok" : 1 }
mongos> db.runCommand({addshard:"shard3_zxl/192.168.75.128:10003,192.168.75.129:10003,192.168.75.130:10003"});
{ "shardAdded" : "shard3_zxl", "ok" : 1 }#db.runCommand({addshard:"shard1_zxl/192.168.33.131:10001,192.168.33.132:10001,192.168.33.136:10001"});
#db.runCommand({addshard:"shard2_zxl/192.168.33.131:10002,192.168.33.132:10002,192.168.33.136:10002"});
#db.runCommand({addshard:"shard3_zxl/192.168.33.131:10003,192.168.33.132:10003,192.168.33.136:10003"});
注：根据自己的实际情况，修改上面内容，快速执行。。你懂得。。查看shard信息
mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"minCompatibleVersion" : 5,
"currentVersion" : 6,
"clusterId" : ObjectId("56de6f4176b47beaa9c75e9d")
}
shards:
{ "_id" : "shard1_zxl", "host" : "shard1_zxl/192.168.75.128:10001,192.168.75.129:10001" }
{ "_id" : "shard2_zxl", "host" : "shard2_zxl/192.168.75.129:10002,192.168.75.130:10002" }
{ "_id" : "shard3_zxl", "host" : "shard3_zxl/192.168.75.128:10003,192.168.75.130:10003" }
active mongoses:
"3.2.3" : 3
balancer:
Currently enabled: yes
Currently running: no
Failed balancer rounds in last 5 attempts: 0
Migration Results for the last 24 hours:
No recent migrations
databases:启用shard分片的库名字为‘zxl‘，即为库
mongos> sh.enableSharding("zxl")
{ "ok" : 1 }设置集合的名字以及字段，默认自动建立索引，zxl库，haha集合
mongos> sh.shardCollection("zxl.haha",{age: 1, name: 1})
{ "collectionsharded" : "zxl.haha", "ok" : 1 }模拟在haha集合中插入10000数据
mongos> for (i=1;i<=10000;i++) db.haha.insert({name: "user"+i, age: (i%150)})
WriteResult({ "nInserted" : 1 })可以使用上面mongos> sh.status()命令查看各个shard分片情况，
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时间：2022-04-30 22:48
