Setup Sharding in MongoDB in Ubuntu With Two Shard(3 Mongo Instance as Replica Set),One Router and Three Config Server

Continue from the previous blog “Sharding Part 2” (http://www.oodlestechnologies.com/blogs/Using-MongoDB-%7C-Sharding-%7C-Adding-Two-More-Config-Servers-%7C-Part-2) , now in this blog we will add one more shard servers in sharded cluster.

Initials :

1.)First You must go through the previous blog of this series (http://www.oodlestechnologies.com/blogs/Using-MongoDB-%7C-Sharding-%7C-Adding-Two-More-Config-Servers-%7C-Part-2)

2.) In my previous blog i have used only one shard server, Now i am using total two shard each containing 3 mongod instance (mongo-1,mongo-2,mongo-3,mongo-4,mongo-5,mongo-6)

3.) Make sure you can access each mongo console server from other mongo servers

Configuration for New Shard (mongo-4,mongo-5,mongo-6)

In this section i will discuss configuration for one more shard i.e. total of two shard in sharded cluster. Basically in previous blog of this series i have added one shard in cluster.I assumed that we have rs2(shard_name) as second shard with 3 mongod instance running and mongo-4 is the primary node of this shard.

Step 1:

Goto mongos console i.e execute below commands/query in router-1 server.

Code Snippet :-

mongo
sh.addShard("rs2/ip-address-of-mongo-4-machine:27017");

Step 2:

Clear configuration cache history. Use below commands.

Code Snippet :-

use admin;
db.adminCommand("flushRouterConfig");

Step 3:

Now shutdown all mongod, mongos process.

Step 4:

And restart both shard(each mongod instance) ,config servers(each mongod instance),and query router(mongos instance) with correct configuration. [Note : exactly same what we did in previous blog]

For more information you can see this MongoDB tutorial for Sharding.

Thanks

Amit