mongoDB配置主从同步

Posted 2020-08-19

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官方网站：
http://www.mongodb.org/

MongoDB 安裝,主从配置

一 MongoDB 安装

[[email protected]_server src]# wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.0.0.tgz
[[email protected]_server src]# tar xzvf mongodb-linux-x86_64-2.0.0.tgz
[[email protected]_server src]# mv mongodb-linux-x86_64-2.0.0 /usr/local/mongodb
[[email protected]_server src]# mkdir /usr/local/mongodb/data
[[email protected]_server src]# touch /usr/local/mongodb/logs
[[email protected]_server bin]# /usr/local/mongodb/bin/mongod --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/logs --logappend --port=27017 --fork
[[email protected]_server bin]#./mongo
MongoDB shell version: 2.0.0
connecting to:test
> use test;
switched to db test
> exit
bye
[[email protected]_server bin]# netstat -anlpt | grep mongo
tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 11504/mongod
tcp 0 0 0.0.0.0:28017 0.0.0.0:* LISTEN 11504/mongod

注意：
如果报错
-bash: /usr/local/mongodb/bin/mongod: cannot execute binary file
说明你的服务器和mongodb 的版本不对应, 如果服务器是64位,下载x86_64的mongodb ,如果服务器是32位的, 下载i686的mongodb/

二 MongoDB 主从配置

1)实验环境
主:192.168.0.14
从:192.168.0.64

2)时间同步
两台机器做时间同步
[[email protected]_server src]# ntpdate time.windows.com

3)启动服务
master:192.168.0.14
启动命令
/usr/local/mongodb/bin/mongod --master --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/logs --logappend --port=27017 --fork

slave:192.168.0.64
启动命令
/usr/local/mongodb/bin/mongod --slave --source 192.168.0.14:27017 --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/logs --logappend --port=27017 --fork

4)测试主从
在主上插入数据
测试1：

测试1：
1 在主库上插入数据
[[email protected] bin]#./mongo
MongoDB shell version: 2.0.0
connecting to:test
> db.foo.save({"id":123456,"name":‘lizonggang‘})
> db.foo.find({"id":123456})
{ "_id": ObjectId("51c3f4b21399022afd992f39"),"id": 123456,"name":"lizonggang" }
>
2 在从上查看数据(已有在主上插入的数据,说明主从成功)
[[email protected]_server bin]#./mongo
MongoDB shell version: 2.0.0
connecting to:test
> db.foo.find({"id":123456})
{ "_id": ObjectId("51c3f4b21399022afd992f39"),"id": 123456,"name":"lizonggang" }
>

测试2：

1 在主库上插入数据
> use elaindb
switched to db elaindb
> db.test.save({title:"This is a test!"})
> db.test.find();
{ "_id": ObjectId("51c3f8f11a90c8da157c7f64"),"title":"This is a test!" }
>
2 在从库上验证数据
[[email protected]_server bin]#./mongo
MongoDB shell version: 2.0.0
connecting to:test
> use elaindb
switched to db elaindb
> db.test.find();
{ "_id": ObjectId("51c3f8f11a90c8da157c7f64"),"title":"This is a test!" }
> db.printReplicationInfo();
this is a slave, printing slave replication info.
source: 192.168.0.14:27017
syncedTo: Fri Jun 21 2013 14:59:10 GMT+0800 (CST)
= 9 secs ago (0hrs)
>
> db.printSlaveReplicationInfo();
source: 192.168.0.14:27017
syncedTo: Fri Jun 21 2013 14:59:30 GMT+0800 (CST)
= 16 secs ago (0hrs)
>

测试3：

在这个状态下,slave 下是不可以插入数据的
> db.test.save({title:"This is slave test!"})
not master

5) 一些查询状态的语句

1)查询库

> show dbs;
elaindb 0.0625GB
local 0.125GB
test 0.0625GB

2)在从库上查询主库的地址

> use local;
switched to db local
> db.sources.find()
{ "_id": ObjectId("51c3f5dd568d10529950b10d"),"host":"192.168.0.14:27017","source":"main","syncedTo": { "t": 1371797300000,"i": 1 } }
>