MongoDB database M

The blog.chinaunix.netuid-24086995-id-1754660.html uses two different ports on the same machine to start mongodb and create two new directories under the database directory [root @ localhost ~] # Mkdirdatadbmaster [root @ localhost ~] # Mkdirdatadbslave master: only required

The http://blog.chinaunix.net/uid-24086995-id-1754660.html uses two different ports on the same machine to start mongodb and create two new directories under the database directory [root @ localhost ~ ] # Mkdir/data/db/master [root @ localhost ~ ] # Mkdir/data/db/slave master: only required

Http://blog.chinaunix.net/uid-24086995-id-1754660.html

Start mongodb with two different ports on the same machine
Create two new directories under the database directory

1. [Root @ localhost ~] # Mkdir/data/db/master

[Root @ localhost ~] # Mkdir/data/db/slave

Master: only the -- master parameter needs to be included, indicating that this is a master, which is quite convenient.

1. [Root @ localhost ~] #/Usr/local/bin/mongod -- master-dbpath =/data/db/master-port = 11536 &
   
2. [1] 10939
   
3. [Root @ localhost ~] # Mon Jul 25 20:21:59 [initandlisten] MongoDB starting: pid = 10939 port = 11536 dbpath =/data/db/master = 1 32-bit

From: Take the -- slave parameter to specify the slave, specify the -- source, Master Address and port, it is much more convenient than MYSQL.

1. [Root @ localhost bin] #/usr/local/bin/mongod-port 11537 -- slave-dbpath =/data/db/slave -- source 127.0.0.1: 11536
   
2. Mon Jul 25 20:25:52 [initandlisten] MongoDB starting: pid = 11158 port = 11537 dbpath =/data/db/slave = 1 32-bit

Open a new terminal, log on to 11536 (master), and write a record

1. [Root @ localhost ~] #/Usr/local/bin/mongo -- port = 11536
   
2. MongoDB shell version: 1.8.2
   
3. Connecting to: 127.0.0.1: 11536/test
   
4. > Use brucezuo
   
5. Switched to db brucezuo
   
6. > Db. createCollection ("table1 ")
   
7. {"OK": 1}
   
8. > Db. table1.insert ({id: 1, name: "zxy", age: 29 })
   
9. >

Open a new terminal and log on to 11537 (slave) to check whether the data is consistent.

1. [Root @ localhost ~] #/Usr/local/bin/mongo -- port = 11537
   
2. MongoDB shell version: 1.8.2
   
3. Connecting to: 127.0.0.1: 11537/test
   
4. > Show dbs
   
5. Admin (empty)
   
6. Brucezuo 0.0625 GB
   
7. Local 0.0625 GB
   
8. > Use brucezuo
   
9. Switched to db brucezuo
   
10. > Db. table1.find ()
    
11. {"_ Id": ObjectId ("4e2e348ed502dbae1aee469e"), "id": 1, "name": "zxy", "age": 29}
    
12. >

The data on both ends is completely consistent.

From the test above, mongodb has much easier configuration for master-slave replication than MYSQL.