本文档详细介绍了如何在CentOS7环境中使用Dockerfile构建并运行MongoDB-3.4.4镜像。通过下载MongoDB的Linux x86_64-rhel70版本，创建Dockerfile，然后执行构建和运行命令，最终在容器内启动并配置了MongoDB的config server、shard以及mongos。包括启动config server、shard server以及设置分片的步骤，并创建了数据库test和用户。
下载
wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-3.4.4.tgz
本地dockerfile
[root@yzb-centos72-3 software]# more dockerfile/mongodb
FROM centos
MAINTAINER jiangleid@163.com
RUN mkdir -p /home/software
WORKDIR /home/software
RUN yum install -y unzip zip；
RUN yum install -y net-tools
# '***** mongodb ******'
ADD mongodb-linux-x86_64-rhel70-3.4.4.tgz /usr/local/
RUN mv /usr/local/mongodb-linux-x86_64-rhel70-3.4.4 /usr/local/mongodb-3.4.4
ADD mongodb/ /usr/local/mongodb-3.4.4/conf/
RUN chmod -R 755 /usr/local/mongodb-3.4.4
[root@yzb-centos72-3 mongodb]# tree
.
├── config
│ ├── config_21000.conf
│ ├── db
│ └── log
├── mongos
│ ├── log
│ └── mongos_20000.conf
└── shard
├── shard1
│ ├── db
│ ├── log
│ └── shard1_22001.conf
├── shard2
│ ├── db
│ ├── log
│ └── shard2_22002.conf
└── shard3
├── db
├── log
└── shard3_22003.conf
15 directories, 5 files基于dockerfile 构建影像
[root@yzb-centos72-3 software]# docker build -t mongodb:v1.0 -f dockerfile/mongodb .
Sending build context to Docker daemon 300.8 MB
Step 1 : FROM centos
---> a8493f5f50ff
Step 2 : MAINTAINER jiangleid@yonyou.com
---> Using cache
---> 44af6950f23e
Step 3 : RUN mkdir -p /home/software
---> Using cache
---> 5778393e7b40
Step 4 : WORKDIR /home/software
---> Using cache
---> ebdc5e58fd29
、、、、、、、、、
、、、、、、、、、
Step 10 : RUN chmod -R 755 /usr/local/mongodb-3.4.4
---> Running in 412af413e692
---> ede0c75edfac
Removing intermediate container 412af413e692
Successfully built ede0c75edfac[root@yzb-centos72-3 software]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
mongodb v1.0 ede0c75edfac 2 minutes ago 1.183 GB
mariadb v1.0 5f1a79c3025b 19 hours ago 431.3 MB
nginx v1.0 896a46fdd902 22 hours ago 1.07 GB
docker.io/centos latest a8493f5f50ff 5 weeks ago 192.5 MB
docker.io/centos 7.3.1611 67591570dd29 5 months ago 191.8 MB启动镜像
[root@yzb-centos72-3 software]# docker run -it -p 20000:20000 -p 21000:21000 -p 22001:22001 -p 22002:22002 -p 22003:22003 ede0c75edfac
[root@db5e67a0513a software]#
容器内的mongodb
[root@a24970088f14 mongodb-3.4.4]# ll
total 120
-rwxr-xr-x 1 root root 34520 Apr 20 22:20 GNU-AGPL-3.0
-rwxr-xr-x 1 root root 16726 Apr 20 22:20 MPL-2
-rwxr-xr-x 1 root root 1359 Apr 20 22:20 README
-rwxr-xr-x 1 root root 55625 Apr 20 22:20 THIRD-PARTY-NOTICES
drwxr-xr-x 2 root root 4096 May 18 00:52 bin
drwxr-xr-x 5 root root 44 May 18 00:52 conf
启动mongodb的 config shard mongos
进入bin目录
启动config
[root@a24970088f14 bin]# ./mongod -f ../conf/config/config_21000.conf
about to fork child process, waiting until server is ready for connections.
forked process: 35
child process started successfully, parent exiting
config_21000.conf 文件内容
[root@a24970088f14 bin]# more ../conf/config/config_21000.conf
replSet=cfgReplSet
configsvr=true
port=21000
dbpath=/usr/local/mongodb-3.4.4/conf/config/db
logpath=/usr/local/mongodb-3.4.4/conf/config/log/config.log
fork=true[root@db5e67a0513a bin]# ./mongo --port 21000
MongoDB shell version v3.4.4
connecting to: mongodb://127.0.0.1:21000/
MongoDB server version: 3.4.4
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:
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten]
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten]
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten]
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten]
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2017-05-18T01:23:15.669+0000 I CONTROL [initandlisten]
配置：
> rs.initiate({_id:"cfgReplSet", configsvr:true, members:[{_id:0, host:"172.20.4.132:21000"}]})
{ "ok" : 1 }
查看配置
cfgReplSet:SECONDARY> rs.status()
{
"set" : "cfgReplSet",
"date" : ISODate("2017-05-18T01:26:22.490Z"),
"myState" : 1,
"term" : NumberLong(1),
"configsvr" : true,
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1495070775, 10),
"t" : NumberLong(1)
},
"readConcernMajorityOpTime" : {
"ts" : Timestamp(1495070775, 10),
"t" : NumberLong(1)
},
"appliedOpTime" : {
"ts" : Timestamp(1495070775, 10),
"t" : NumberLong(1)
},
"durableOpTime" : {
"ts" : Timestamp(1495070775, 10),
"t" : NumberLong(1)
}
},
"members" : [
{
"_id" : 0,
"name" : "172.20.4.132:21000",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 187,
"optime" : {
"ts" : Timestamp(1495070775, 10),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2017-05-18T01:26:15Z"),
"infoMessage" : "could not find member to sync from",
"electionTime" : Timestamp(1495070772, 1),
"electionDate" : ISODate("2017-05-18T01:26:12Z"),
"configVersion" : 1,
"self" : true
}
],
"ok" : 1
}
因为我这测试，只有一个config，若是多个的话，在members 数组中配置上即可。
如：
rs.initiate({_id:"cfgReplSet", configsvr:true, members:[{_id:0, host:"172.20.4.132:21000"}，{_id:0, host:"172.20.4.133:21000"}，{_id:0, host:"172.20.4.134:21000"}]})
也可以用add的方式追加，如后续新加入的副本
rs.add("172.20.4.133:21000") # 添加备份库
rs.addArb("172.20.4.134:21000")#添加仲裁
exit 退出
启动shard1
[root@db5e67a0513a bin]# ./mongod -f ../conf/shard/shard1/shard1_22001.conf
about to fork child process, waiting until server is ready for connections.
forked process: 108
child process started successfully, parent exiting
文件shard1_22001.conf
bye
[root@db5e67a0513a bin]# more ../conf/shard/shard1/shard1_22001.conf
#分片服务
shardsvr=true
#副本名称
replSet=shard1ReplSet
#端口
port=22001
# 数据库文件位置
dbpath=/usr/local/mongodb-3.4.4/conf/shard/shard1/db
# 日志文件位置
logpath=/usr/local/mongodb-3.4.4/conf/shard/shard1/log/log
# 是否以守护进程方式运行
fork=true
# 以追加方式写入日志
logappend=true
# 开启用户认证
#auth = true启动shard2
[root@db5e67a0513a bin]# ./mongod -f ../conf/shard/shard2/shard2_22002.conf
about to fork child process, waiting until server is ready for connections.
forked process: 139
child process started successfully, parent exiting
文件shard2_22002.conf
[root@db5e67a0513a bin]# more ../conf/shard/shard2/shard2_22002.conf
#分片服务
shardsvr=true
#副本名称
replSet=shard2ReplSet
#端口
port=22002
# 数据库文件位置
dbpath=/usr/local/mongodb-3.4.4/conf/shard/shard2/db
# 日志文件位置
logpath=/usr/local/mongodb-3.4.4/conf/shard/shard2/log/log
# 是否以守护进程方式运行
fork=true
# 以追加方式写入日志
logappend=true
# 开启用户认证
#auth = true启动shard3
[root@db5e67a0513a bin]# ./mongod -f ../conf/shard/shard3/shard3_22003.conf
about to fork child process, waiting until server is ready for connections.
forked process: 170
child process started successfully, parent exiting
文件shard3_22003.conf
[root@db5e67a0513a bin]# more ../conf/shard/shard3/shard3_22003.conf
#分片服务
shardsvr=true
#副本名称
replSet=shard3ReplSet
#端口
port=22003
# 数据库文件位置
dbpath=/usr/local/mongodb-3.4.4/conf/shard/shard3/db
# 日志文件位置
logpath=/usr/local/mongodb-3.4.4/conf/shard/shard3/log/log
# 是否以守护进程方式运行
fork=true
# 以追加方式写入日志
logappend=true
# 开启用户认证
#auth = true登入配置shard1、shard2、shard3的副本集
[root@db5e67a0513a bin]# ./mongo --port 22001
MongoDB shell version v3.4.4
connecting to: mongodb://127.0.0.1:22001/
MongoDB server version: 3.4.4
Server has startup warnings:
2017-05-18T01:30:37.013+0000 I CONTROL [initandlisten]
2017-05-18T01:30:37.013+0000 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2017-05-18T01:30:37.013+0000 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2017-05-18T01:30:37.013+0000 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2017-05-18T01:30:37.013+0000 I CONTROL [initandlisten]
2017-05-18T01:30:37.013+0000 I CONTROL [initandlisten]
2017-05-18T01:30:37.013+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2017-05-18T01:30:37.013+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2017-05-18T01:30:37.013+0000 I CONTROL [initandlisten]
2017-05-18T01:30:37.014+0000 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2017-05-18T01:30:37.014+0000 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2017-05-18T01:30:37.014+0000 I CONTROL [initandlisten]
> rs.initiate({_id:"shard1ReplSet", members:[{ _id:0, host:"172.20.4.132:22001" }] })
{ "ok" : 1 }
shard1ReplSet:SECONDARY> rs.status();
{
"set" : "shard1ReplSet",
"date" : ISODate("2017-05-18T01:40:10.006Z"),
"myState" : 1,
"term" : NumberLong(1),
"heartbeatIntervalMillis" : NumberLong(2000),
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1495071605, 1),
"t" : NumberLong(1)
},
"appliedOpTime" : {
"ts" : Timestamp(1495071605, 1),
"t" : NumberLong(1)
},
"durableOpTime" : {
"ts" : Timestamp(1495071605, 1),
"t" : NumberLong(1)
}
},
"members" : [
{
"_id" : 0,
"name" : "172.20.4.132:22001",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 574,
"optime" : {
"ts" : Timestamp(1495071605, 1),
"t" : NumberLong(1)
},
"optimeDate" : ISODate("2017-05-18T01:40:05Z"),
"infoMessage" : "could not find member to sync from",
"electionTime" : Timestamp(1495071603, 2),
"electionDate" : ISODate("2017-05-18T01:40:03Z"),
"configVersion" : 1,
"self" : true
}
],
"ok" : 1
}
shard1ReplSet:PRIMARY>
同样的方式登入 22002,22003配置shard2、shard3.
同上面的config一样，我这没有起副本，所有的副本集中都只是一个节点。
若是多个副本，也是按照config下面说的一样，在members的数组中添加上即可。
启动mongos
[root@db5e67a0513a bin]# ./mongos -f ../conf/mongos/mongos_20000.conf
2017-05-18T01:56:28.075+0000 W SHARDING [main] Running a sharded cluster with fewer than 3 config servers should only be done for testing purposes and is not recommended for production.
about to fork child process, waiting until server is ready for connections.
forked process: 357
child process started successfully, parent exiting
登入mongos
[root@db5e67a0513a bin]# ./mongo --port 20000
MongoDB shell version v3.4.4
connecting to: mongodb://127.0.0.1:20000/
MongoDB server version: 3.4.4
Server has startup warnings:
2017-05-18T01:56:28.090+0000 I CONTROL [main]
2017-05-18T01:56:28.090+0000 I CONTROL [main] ** WARNING: Access control is not enabled for the database.
2017-05-18T01:56:28.090+0000 I CONTROL [main] ** Read and write access to data and configuration is unrestricted.
2017-05-18T01:56:28.090+0000 I CONTROL [main] ** WARNING: You are running this process as the root user, which is not recommended.
2017-05-18T01:56:28.090+0000 I CONTROL [main]
mongos>
新建 test db
mongos> use test
查看当前使用的db
mongos> db
test
为test db 添加用户 test 密码 111111
mongos> db.createUser({user:"test",pwd:"111111",roles:[{role:"readWrite",db:"test"}]})
Successfully added user: {
"user" : "test",
"roles" : [
{
"role" : "readWrite",
"db" : "test"
}
]
}
验证用户登录
mongos> db.auth("test","111111")
1
成功
这时插入数据会报错，因为db test没有配置shard
mongos> db.test.insert({"name":"mayun","age":"50"})
WriteResult({
"writeError" : {
"code" : 70,
"errmsg" : "unable to target write op for collection test.test :: caused by :: ShardNotFound: Database test not found due to No shards found"
}
})
为数据库配置shard
将之前的shard加入到mongos，以便路由
mongos> sh.addShard("shard1ReplSet/172.20.4.132:22001")
{ "shardAdded" : "shard1ReplSet", "ok" : 1 }
mongos> sh.addShard("shard2ReplSet/172.20.4.132:22002")
{ "shardAdded" : "shard2ReplSet", "ok" : 1 }
mongos> sh.addShard("shard3ReplSet/172.20.4.132:22003")
{ "shardAdded" : "shard3ReplSet", "ok" : 1 }
这里添加的副本集，只需要是副本集名加上一个副本集中的成员即可，不一定要是primary节点。
设置 库 集合（表）的分片
mongos> sh.enableSharding("test")
{ "ok" : 1 }
mongos> sh.shardCollection("test.user",{"_id":"hashed"})
{ "collectionsharded" : "test.user", "ok" : 1 }
插入、查询数据
mongos> db
test
mongos> db.user.insert({"name":"mayun","age":"50"})
WriteResult({ "nInserted" : 1 })
mongos> db.user.insert({"name":"wangjinlin","age":"55"})
WriteResult({ "nInserted" : 1 })
mongos> db.user.insert({"name":"bill","age":"20"})
WriteResult({ "nInserted" : 1 })
mongos> db.user.insert({"name":"bill1","age":"201"})
WriteResult({ "nInserted" : 1 })
mongos> db.user.insert({"name":"bill2","age":"202"})
WriteResult({ "nInserted" : 1 })
mongos> db.user.insert({"name":"bill3","age":"203"})
WriteResult({ "nInserted" : 1 })
mongos> db.user.insert({"name":"bill4","age":"204"})
WriteResult({ "nInserted" : 1 })
mongos> db.user.find();
{ "_id" : ObjectId("591d084bbe63f26c975b510e"), "name" : "wangjinlin", "age" : "55" }
{ "_id" : ObjectId("591d0f51abc9d23287a29044"), "name" : "bill", "age" : "20" }
{ "_id" : ObjectId("591d0f6cabc9d23287a29047"), "name" : "bill3", "age" : "203" }
{ "_id" : ObjectId("591d0f5cabc9d23287a29045"), "name" : "bill1", "age" : "201" }
{ "_id" : ObjectId("591d0f64abc9d23287a29046"), "name" : "bill2", "age" : "202" }
{ "_id" : ObjectId("591d0823be63f26c975b510d"), "name" : "mayun", "age" : "50" }
{ "_id" : ObjectId("591d0f74abc9d23287a29048"), "name" : "bill4", "age" : "204" }
查看分片状态
mongos> db.user.stats();
{
"sharded" : true,
"capped" : false,
"ns" : "test.user",
"count" : 7,
"size" : 358,
"storageSize" : 81920,
"totalIndexSize" : 163840,
"indexSizes" : {
"_id_" : 81920,
"_id_hashed" : 81920
},
"avgObjSize" : 50.714285714285715,
"nindexes" : 2,
"nchunks" : 6,
"shards" : {
"shard1ReplSet" : {
"ns" : "test.user",
"size" : 155,
"count" : 3,
"avgObjSize" : 51,
"storageSize" : 32768,
"capped" : false,
"wiredTiger" : {
、、、、、、、、
、、、、、、
"shard2ReplSet" : {
"ns" : "test.user",
"size" : 102,
"count" : 2,
"avgObjSize" : 51,
"storageSize" : 16384,
"capped" : false,
"wiredTiger" : {
"metadata" : {
"formatVersion" : 1
},
、、、、、、、、
、、、、、、、、
"shard3ReplSet" : {
"ns" : "test.user",
"size" : 101,
"count" : 2,
"avgObjSize" : 50,
"storageSize" : 32768,
"capped" : false,
"wiredTiger" : {
"metadata" : {
"formatVersion" : 1
},
可以看到user总记录是7
shard1ReplSet：3， shard2ReplSet：2， shard3ReplSet：2
结束
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