mongodb复制集+分片生产环境实践
三台机器操作系统环境如下：$ cat /etc/issue
Red Hat Enterprise Linux Server release 6.6 (Santiago)
Kernel \r on an \m
$ uname -r
2.6.32-504.el6.x86_64
$ uname -m
x86_64
架构如下图:
文字描述： 1
192.168.42.41、shard1:10001、shard2:10002、shard3:10003、configsvr:10004、mongos:10005
注：shard1主节点，shard2仲裁，shard3副本
192.168.42.42、shard1:10001、shard2:10002、shard3:10003、configsvr:10004、mongos:10005
注：shard1副本，shard2主节点，shard3仲裁
192.168.42.43、shard1:10001、shard2:10002、shard3:10003、configsvr:10004、mongos:10005
注：shard1仲裁，shard2副本，shard3主节点
node1：192.168.42.41
node2：192.168.42.42
node3：192.168.42.43
创建mongodb用户
# groupaddmongodb
# useradd-g mongodb mongodb
# mkdir /data
# chown mongodb.mongodb /data -R
# su - mongodb
创建目录和文件
$ mkdir /data/{config,shard1,shard2,shard3,mongos,logs,configsvr,keyfile} -pv
$ touch /data/keyfile/zxl
$ touch /data/logs/shard{1..3}.log
$ touch /data/logs/{configsvr,mongos}.log
$ touch /data/config/shard{1..3}.conf
$ touch /data/config/{configsvr,mongos}.conf
下载mongodb
$ wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel62-3.2.3.tgz
$ tar fxz mongodb-linux-x86_64-rhel62-3.2.3.tgz -C /data
$ ln -s /data/mongodb-linux-x86_64-rhel62-3.2.3 /data/mongodb
配置mongodb环境变量
$ echo "export PATH=$PATH:/data/mongodb/bin" >> ~/.bash_profile
$ source ~/.bash_profile
shard1.conf配置文件内容如下：
$ 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：
$ 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：
$ cat /data/config/shard3.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：
$ 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：
$ 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: 192.168.42.41:10004,192.168.42.42:10004,192.168.42.43:10004
#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。
启动各个机器节点的mongod，shard1、shard2、shard3
$ 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,redhat6.6基本不存在这种情况，centos可能会遇到。
$ su - root
Password:
# yum install openssl-devel -y
再次切换mongodb用户启动三台机器上的mongod，shard1、shard2、shard3
$ 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
$ 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
$ 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
注意：如果这一步报错，可以看他的提示信息，或者/data/logs/shard{1..3}.log的日志。
进入node1机器上的mongod:10001登录
$ 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
2016-03-08T13:28:18.508+0800 I CONTROL ** WARNING: /sys/kernel/mm/epage/enabled is 'always'.
2016-03-08T13:28:18.508+0800 I CONTROL ** We suggest settin
2016-03-08T13:28:18.508+0800 I CONTROL
2016-03-08T13:28:18.508+0800 I CONTROL ** WARNING: /sys/kernel/mm/epage/defrag is 'always'.
2016-03-08T13:28:18.508+0800 I CONTROL ** We suggest settin
2016-03-08T13:28:18.508+0800 I CONTROL
注：提示warning......
解决：在三台机器上均操作一下内容即可
$ su - root
Password
# echo never > /sys/kernel/mm/transparent_hugepage/enabled
# echo never > /sys/kernel/mm/transparent_hugepage/defrag
一定要关闭三台机器上的mongod实例，然后再次启动三台机器上mongod实例，否则不生效。
$ netstat -ntpl|grep mongo|awk '{print $NF}'|awk -F'/' '{print $1}'|xargs kill
$ mongod -f /data/config/shard1.conf
$ mongod -f /data/config/shard2.conf
$ mongod -f /data/config/shard3.conf
看端口是否存在：
$ ss -atunlp|grep mong
tcp LISTEN 0 128 *:10001 *:* users:(("mongod",2630,6))
tcp LISTEN 0 128 *:10002 *:* users:(("mongod",2654,6))
tcp LISTEN 0 128 *:10003 *:* users:(("mongod",2678,6))
配置复制集
node1机器上操作配置复制集
$ 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:"192.168.42.41:10001"},
... ... {_id:1,host:"192.168.42.42:10001"},
... ... {_id:2,host:"192.168.42.43:10001",arbiterOnly:true}
... ... ]
... ... }
{
"_id" : "shard1_zxl",
"members" : [
{
"_id" : 0,
"host" : "192.168.42.41:10001"
},
{
"_id" : 1,
"host" : "192.168.42.42:10001"
},
{
"_id" : 2,
"host" : "192.168.42.43:10001",
"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
$ 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:"192.168.42.42:10002"},
... ... {_id:1,host:"192.168.42.43:10002"},
... ... {_id:2,host:"192.168.42.41:10002",arbiterOnly:true}
... ... ]
... ... }
{
"_id" : "shard2_zxl",
"members" : [
{
"_id" : 0,
"host" : "192.168.42.42:10002"
},
{
"_id" : 1,
"host" : "192.168.42.43:10002"
},
{
"_id" : 2,
"host" : "192.168.42.41:10002",
"arbiterOnly" : true
}
]
}
> rs.initiate(config)
{ "ok" : 1 }
node3机器上操作配置复制集
$ 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:"192.168.42.43:10003"},
... ... {_id:1,host:"192.168.42.41:10003"},
... ... {_id:2,host:"192.168.42.42:10003",arbiterOnly:true}
... ... ]
... ... }
{
"_id" : "shard3_zxl",
"members" : [
{
"_id" : 0,
"host" : "192.168.42.43:10003"
},
{
"_id" : 1,
"host" : "192.168.42.41:10003"
},
{
"_id" : 2,
"host" : "192.168.42.42:10003",
"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
$ 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
$ 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
查看端口是否启动：
$ ss -atunlp|grep mong
tcp LISTEN 0 128 *:10001 *:* users:(("mongod",2630,6))
tcp LISTEN 0 128 *:10002 *:* users:(("mongod",2654,6))
tcp LISTEN 0 128 *:10003 *:* users:(("mongod",2678,6))
tcp LISTEN 0 128 *:10004 *:* users:(("mongod",3053,6))
tcp LISTEN 0 128 *:10005 *:* users:(("mongos",3157,21))
配置shard分片
在node1机器上配置shard分片
$ 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/192.168.42.41:10001,192.168.42.42:10001,192.168.42.43:10001"});
{ "shardAdded" : "shard1_zxl", "ok" : 1 }
mongos> db.runCommand({addshard:"shard2_zxl/192.168.42.41:10002,192.168.42.42:10002,192.168.42.43:10002"});
{ "shardAdded" : "shard2_zxl", "ok" : 1 }
mongos> db.runCommand({addshard:"shard3_zxl/192.168.42.41:10003,192.168.42.42:10003,192.168.42.43:10003"});
{ "shardAdded" : "shard3_zxl", "ok" : 1 }
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/192.168.42.41:10001,192.168.42.42:10001" }
{"_id" : "shard2_zxl","host" : "shard2_zxl/192.168.42.42:10002,192.168.42.43:10002" }
{"_id" : "shard3_zxl","host" : "shard3_zxl/192.168.42.41:10003,192.168.42.43:10003" }
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:
查看分片状态
mongos> db.runCommand( {listshards : 1 } )
{
"shards" : [
{
"_id" : "shard1_zxl",
"host" : "shard1_zxl/192.168.42.41:10001,192.168.42.42:10001"
},
{
"_id" : "shard2_zxl",
"host" : "shard2_zxl/192.168.42.42:10002,192.168.42.43:10002"
},
{
"_id" : "shard3_zxl",
"host" : "shard3_zxl/192.168.42.41:10003,192.168.42.43:10003"
}
],
"ok" : 1
}
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 sh.status()命令查看各个shard分片情况，以上就是复制集和shard分片搭建完成。
结果如下：
mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"minCompatibleVersion" : 5,
"currentVersion" : 6,
"clusterId" : ObjectId("56de6f4176b47beaa9c75e9d")
}
shards:
{"_id" : "shard1_zxl","host" : "shard1_zxl/192.168.42.41:10001,192.168.42.42:10001" }
{"_id" : "shard2_zxl","host" : "shard2_zxl/192.168.42.42:10002,192.168.42.43:10002" }
{"_id" : "shard3_zxl","host" : "shard3_zxl/192.168.42.41:10003,192.168.42.43:10003" }
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:
2 : Success
databases:
{"_id" : "zxl","primary" : "shard3_zxl","partitioned" : true }
zxl.haha
shard key: { "age" : 1, "name" : 1 }
unique: false
balancing: true
chunks:
shard1_zxl1
shard2_zxl1
shard3_zxl1
{ "age" : { "$minKey" : 1 }, "name" : { "$minKey" : 1 } } -->> { "age" : 2, "name" : "user2" } on : shard1_zxl Timestamp(2, 0)
{ "age" : 2, "name" : "user2" } -->> { "age" : 22, "name" : "user22" } on : shard2_zxl Timestamp(3, 0)
{ "age" : 22, "name" : "user22" } -->> { "age" : { "$maxKey" : 1 }, "name" : { "$maxKey" : 1 } } on : shard3_zxl Timestamp(3, 1)
以上就是mongodb3.2复制集和shard分片搭建就此完成.有什么疑问可以给我留言，看到第一时间解决。
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