MongoDB分片搭建
环境
$ cat /etc/redhat-release
CentOS Linux release 7.0.1406 (Core)
$ uname -a
Linux zhaopin-2-201 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
$ mongo --version
MongoDB shell version: 3.0.6
node1: 172.30.2.201
node2: 172.30.2.202
node3: 172.30.2.203
配置Shard Server
- 在3个节点分别执行: *
创建目录
$ sudo mkdir -p /data/mongodb/{data/{sh0,sh1},backup/{sh0,sh1},log/{sh0,sh1},conf/{sh0,sh1}}
准备配置文件
- 第一个分片： *
$ sudo vim /data/mongodb/conf/sh0/mongodb.conf
# base
port = 27010
maxConns = 800
filePermissions = 0700
fork = true
noauth = true
directoryperdb = true
dbpath = /data/mongodb/data/sh0
pidfilepath = /data/mongodb/data/sh0/mongodb.pid
oplogSize = 10
journal = true
# security
nohttpinterface = true
rest = false
# log
logpath = /data/mongodb/log/sh0/mongodb.log
logRotate = rename
logappend = true
slowms = 50
replSet = sh0
shardsvr = true
- 第二个分片： *
$ sudo vim /data/mongodb/conf/sh1/mongodb.conf
# base
port = 27011
maxConns = 800
filePermissions = 0700
fork = true
noauth = true
directoryperdb = true
dbpath = /data/mongodb/data/sh1
pidfilepath = /data/mongodb/data/sh1/mongodb.pid
oplogSize = 10
journal = true
# security
nohttpinterface = true
rest = false
# log
logpath = /data/mongodb/log/sh1/mongodb.log
logRotate = rename
logappend = true
slowms = 50
replSet = sh1
shardsvr = true
启动Shard Server
$ sudo /opt/mongodb/bin/mongod --config /data/mongodb/conf/sh0/mongodb.conf
about to fork child process, waiting until server is ready for connections.
forked process: 41492
child process started successfully, parent exiting
$ sudo /opt/mongodb/bin/mongod --config /data/mongodb/conf/sh1/mongodb.conf
about to fork child process, waiting until server is ready for connections.
forked process: 41509
child process started successfully, parent exiting
$ ps aux | grep mongo | grep -v grep
root 41492 0.5 0.0 518016 54604 ? Sl 10:09 0:00 /opt/mongodb/bin/mongod --config /data/mongodb/conf/sh0/mongodb.conf
root 41509 0.5 0.0 516988 51824 ? Sl 10:09 0:00 /opt/mongodb/bin/mongod --config /data/mongodb/conf/sh1/mongodb.conf
$ mongo --port 27010
MongoDB shell version: 3.0.6
connecting to: 127.0.0.1:27010/test
>
bye
$ mongo --port 27011
MongoDB shell version: 3.0.6
connecting to: 127.0.0.1:27011/test
>
bye
配置Config Server
- 在3个节点分别执行: *
创建目录
$ sudo mkdir -p /data/mongodb/{data/cf0,backup/cf0,log/cf0,conf/cf0}
准备配置文件
$ sudo vim /data/mongodb/conf/cf0/config.conf
# base
port = 27000
maxConns = 800
filePermissions = 0700
fork = true
noauth = true
directoryperdb = true
dbpath = /data/mongodb/data/cf0
pidfilepath = /data/mongodb/data/cf0/config.pid
oplogSize = 10
journal = true
# security
nohttpinterface = true
rest = false
# log
logpath = /data/mongodb/log/cf0/config.log
logRotate = rename
logappend = true
slowms = 50
configsvr = true
启动
$ sudo /opt/mongodb/bin/mongod --config /data/mongodb/conf/cf0/config.conf
about to fork child process, waiting until server is ready for connections.
forked process: 41759
child process started successfully, parent exiting
$ ps aux | grep mongo | grep -v grep
root 41492 0.3 0.0 518016 54728 ? Sl 10:09 0:06 /opt/mongodb/bin/mongod --config /data/mongodb/conf/sh0/mongodb.conf
root 41509 0.3 0.0 518016 54760 ? Sl 10:09 0:06 /opt/mongodb/bin/mongod --config /data/mongodb/conf/sh1/mongodb.conf
root 41855 0.4 0.0 467828 51684 ? Sl 10:25 0:03 /opt/mongodb/bin/mongod --config /data/mongodb/conf/cf0/config.conf
配置Query Routers
- 在3个节点分别执行: *
创建目录
$ sudo mkdir -p /data/mongodb/{data/ms0,backup/ms0,log/ms0,conf/ms0}
准备配置文件
$ sudo vim /data/mongodb/conf/ms0/mongos.conf
# base
port = 30000
maxConns = 800
filePermissions = 0700
fork = true
pidfilepath = /data/mongodb/data/ms0/mongos.pid
# log
logpath = /data/mongodb/log/ms0/mongos.log
logRotate = rename
logappend = true
configdb = 172.30.2.201:27000,172.30.2.202:27000,172.30.2.203:27000
启动
$ sudo /opt/mongodb/bin/mongos --config /data/mongodb/conf/ms0/mongos.conf
about to fork child process, waiting until server is ready for connections.
forked process: 42233
child process started successfully, parent exiting
$ ps aux | grep mongo | grep -v grep
root 41492 0.3 0.0 518016 54728 ? Sl 10:09 0:06 /opt/mongodb/bin/mongod --config /data/mongodb/conf/sh0/mongodb.conf
root 41509 0.3 0.0 518016 54760 ? Sl 10:09 0:07 /opt/mongodb/bin/mongod --config /data/mongodb/conf/sh1/mongodb.conf
root 41855 0.4 0.0 546724 37812 ? Sl 10:25 0:03 /opt/mongodb/bin/mongod --config /data/mongodb/conf/cf0/config.conf
root 41870 0.4 0.0 546724 38188 ? Sl 10:25 0:03 /opt/mongodb/bin/mongod --conf
root 42233 0.5 0.0 233536 10188 ? Sl 10:38 0:00 /opt/mongodb/bin/mongos --config /data/mongodb/conf/ms0/mongos.conf
初始化副本集
配置副本集的好处是为了高可用，配置单节点是我自己为了节省时间，后续添加节点和副本集的操作一样，分片的配置不需要修改,在任何一个节点执行，这里在node1上执行
- 分片一： *
$ mongo --port 27010
MongoDB shell version: 3.0.6
connecting to: 127.0.0.1:27010/test
> use admin
switched to db admin
> cfg={_id:"sh0", members:[ {_id:0,host:"172.30.2.201:27010"}, {_id:1,host:"172.30.2.202:27010"}, {_id:2,host:"172.30.2.203:27010"} ] }
{
"_id" : "sh0",
"members" : [
{
"_id" : 0,
"host" : "172.30.2.201:27010"
},
{
"_id" : 1,
"host" : "172.30.2.202:27010"
},
{
"_id" : 2,
"host" : "172.30.2.203:27010"
}
]
}
> rs.initiate( cfg );
{ "ok" : 1 }
sh0:OTHER> rs.status()
{
"set" : "sh0",
"date" : ISODate("2015-10-23T05:33:31.920Z"),
"myState" : 1,
"members" : [
{
"_id" : 0,
"name" : "172.30.2.201:27010",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 270,
"optime" : Timestamp(1445578404, 1),
"optimeDate" : ISODate("2015-10-23T05:33:24Z"),
"electionTime" : Timestamp(1445578408, 1),
"electionDate" : ISODate("2015-10-23T05:33:28Z"),
"configVersion" : 1,
"self" : true
},
{
"_id" : 1,
"name" : "172.30.2.202:27010",
"health" : 1,
"state" : 5,
"stateStr" : "STARTUP2",
"uptime" : 7,
"optime" : Timestamp(0, 0),
"optimeDate" : ISODate("1970-01-01T00:00:00Z"),
"lastHeartbeat" : ISODate("2015-10-23T05:33:30.289Z"),
"lastHeartbeatRecv" : ISODate("2015-10-23T05:33:30.295Z"),
"pingMs" : 1,
"configVersion" : 1
},
{
"_id" : 2,
"name" : "172.30.2.203:27010",
"health" : 1,
"state" : 5,
"stateStr" : "STARTUP2",
"uptime" : 7,
"optime" : Timestamp(0, 0),
"optimeDate" : ISODate("1970-01-01T00:00:00Z"),
"lastHeartbeat" : ISODate("2015-10-23T05:33:30.289Z"),
"lastHeartbeatRecv" : ISODate("2015-10-23T05:33:30.293Z"),
"pingMs" : 1,
"configVersion" : 1
}
],
"ok" : 1
}
sh0:PRIMARY>
bye
- 分片二： *
$ mongo --port 27011
MongoDB shell version: 3.0.6
connecting to: 127.0.0.1:27011/test
> use admin
switched to db admin
> cfg={_id:"sh1", members:[ {_id:0,host:"172.30.2.201:27011"}, {_id:1,host:"172.30.2.202:27011"}, {_id:2,host:"172.30.2.203:27011"} ] }
{
"_id" : "sh1",
"members" : [
{
"_id" : 0,
"host" : "172.30.2.201:27011"
},
{
"_id" : 1,
"host" : "172.30.2.202:27011"
},
{
"_id" : 2,
"host" : "172.30.2.203:27011"
}
]
}
> rs.initiate( cfg );
{ "ok" : 1 }
sh1:OTHER> rs.status();
{
"set" : "sh1",
"date" : ISODate("2015-10-23T05:36:02.365Z"),
"myState" : 1,
"members" : [
{
"_id" : 0,
"name" : "172.30.2.201:27011",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 406,
"optime" : Timestamp(1445578557, 1),
"optimeDate" : ISODate("2015-10-23T05:35:57Z"),
"electionTime" : Timestamp(1445578561, 1),
"electionDate" : ISODate("2015-10-23T05:36:01Z"),
"configVersion" : 1,
"self" : true
},
{
"_id" : 1,
"name" : "172.30.2.202:27011",
"health" : 1,
"state" : 5,
"stateStr" : "STARTUP2",
"uptime" : 5,
"optime" : Timestamp(0, 0),
"optimeDate" : ISODate("1970-01-01T00:00:00Z"),
"lastHeartbeat" : ISODate("2015-10-23T05:36:01.168Z"),
"lastHeartbeatRecv" : ISODate("2015-10-23T05:36:01.175Z"),
"pingMs" : 0,
"configVersion" : 1
},
{
"_id" : 2,
"name" : "172.30.2.203:27011",
"health" : 1,
"state" : 5,
"stateStr" : "STARTUP2",
"uptime" : 5,
"optime" : Timestamp(0, 0),
"optimeDate" : ISODate("1970-01-01T00:00:00Z"),
"lastHeartbeat" : ISODate("2015-10-23T05:36:01.167Z"),
"lastHeartbeatRecv" : ISODate("2015-10-23T05:36:01.172Z"),
"pingMs" : 0,
"configVersion" : 1
}
],
"ok" : 1
}
sh1:PRIMARY>
bye
配置分片
$ mongo --port 30000
MongoDB shell version: 3.0.6
connecting to: 127.0.0.1:30000/test
mongos> use admin;
switched to db admin
mongos> sh.addShard("sh0/172.30.2.201:27010,172.30.2.202:27010,172.30.2.203:27010");
{ "shardAdded" : "sh0", "ok" : 1 }
mongos> sh.addShard("sh1/172.30.2.201:27011,172.30.2.202:27011,172.30.2.203:27011");
{ "shardAdded" : "sh1", "ok" : 1 }
mongos> use mydb;
switched to db mydb
mongos> db.createCollection("test");
{
"ok" : 1,
"$gleStats" : {
"lastOpTime" : Timestamp(1444358911, 1),
"electionId" : ObjectId("56172a4bc03d9b1667f8e928")
}
}
mongos> sh.enableSharding("mydb");
{ "ok" : 1 }
mongos> sh.shardCollection("mydb.test", {"_id":1});
{ "collectionsharded" : "mydb.test", "ok" : 1 }
mongos> sh.status();
--- Sharding Status ---
sharding version: {
"_id" : 1,
"minCompatibleVersion" : 5,
"currentVersion" : 6,
"clusterId" : ObjectId("561728b4030ea038bcb57fa0")
}
shards:
{ "_id" : "sh0", "host" : "sh0/172.30.2.201:27010,172.30.2.202:27010,172.30.2.203:27010" }
{ "_id" : "sh1", "host" : "sh1/172.30.2.201:27011,172.30.2.202:27011,172.30.2.203:27011" }
balancer:
Currently enabled: yes
Currently running: no
Failed balancer rounds in last 5 attempts: 0
Migration Results for the last 24 hours:
No recent migrations
databases:
{ "_id" : "admin", "partitioned" : false, "primary" : "config" }
{ "_id" : "mydb", "partitioned" : true, "primary" : "sh0" }
mydb.test
shard key: { "_id" : 1 }
chunks:
sh0 1
{ "_id" : { "$minKey" : 1 } } -->> { "_id" : { "$maxKey" : 1 } } on : sh0 Timestamp(1, 0)
可见分片已经配置完成了
添加开机启动项
$ sudo vim /etc/rc.local
ulimit -SHn 65535
/opt/mongodb/bin/mongod --config /data/mongodb/conf/sh0/mongodb.conf
/opt/mongodb/bin/mongod --config /data/mongodb/conf/sh1/mongodb.conf
/opt/mongodb/bin/mongod --config /data/mongodb/conf/cf0/config.conf
/opt/mongodb/bin/mongos --config /data/mongodb/conf/ms0/mongos.conf
备注
虽然也是3台机器，使用分片的好处是可以把两个分片的primary设置在不同的节点，这个可以分摊单节点的压力，当然有更多机器就可以把分片放到不同机器上。
按照mongodb官网的要求, 需要多余多处理器需要关闭muna,以及其他参数 参加mongodb check list
mongodb check list
