MongoDB master-slave synchronization and Backup Recovery

Master-slave synchronization:

1. Create a database directory

Mkdir/mongodb/masterdb

Mkdir/mongodb/slavedb_1

Mkdir/mongodb/slavedb2.

2. Start the Master/Slave servers respectively.
Start the master server to listen to port 10000

./Bin/mongod-dbpath/mongodb/masterdb/-- port10000 -- master
You can also use master-> slave settings to start two slave servers with ports 10001 and 10002 respectively.

./Bin/mongod-dbpath/mongodb/slavedb_1 -- source localhost: 10000 -- slave -- port 10001

./Bin/mongod-dbpath/mongodb/slavedb2-source localhost: 10000 -- slave -- port 10002

# After startup, you will see a log showing the copied content from the master server.

Related Parameters:./mongod -- help
-- Autoresync when the slave server data is not the latest, the master server requests data synchronization.
-- Slavedelay synchronization delay, in seconds

3. Test Master/Slave
A. Create a database on the master server

./Bin/mongo -- port 10001

Show dbs

# Only the system database is in it. If you insert data, the system prompts not master.

Use testdb

Db. blog. save ({title: "newarticle "})

B. view the synchronized data on the slave server

./Bin/mongo -- port 10001

MongoDB shell version: 1.6.0

Connecting to: 127.0.0.1: 10001/test

> Show dbs

Admin

Local

Testdb

> Use testdb

Switched to db testdb

> Db. blog. find ()

{"_ Id": ObjectId ("4c776ccce7af0727ce4b6234"), "title": "newarticle"} # the synchronized data is tested successfully.

1 2 Next Page