Mongodb Sharding - no such command: 'addShard'

Question

I'm trying to configure sharding in one machine and I keep getting an error message when trying to add shards. I'm using the following website as a reference: http://www.javahotchocolate.com/notes/mongodb-sharding.html

I'm using a single machine and using different ports to simulate the different IPs.

I have a configuration as follows:

Replica set members:

mongod --dbpath \rs1_p\db --port 27017 --replSet rs1
mongod --dbpath \rs1_s1\db --port 27018 --replSet rs1
mongod --dbpath \rs1_s2\db --port 27019 --replSet rs1
mongod --dbpath \rs1_p\db --port 47017 --replSet rs2
mongod --dbpath \rs1_s1\db --port 47018 --replSet rs2
mongod --dbpath \rs1_s2\db --port 47019 --replSet rs2

Configuring replica sets in MongoDB shell:

config =
{
    _id:"rs1",
    members:
    [
        { _id:0, host:"computerName:27017" },
        { _id:1, host:"computerName:27018" },
        { _id:2, host:"computerName:27019" }
    ]
}
rs.initiate( config )

config =
{
    _id:"rs2",
    members:
    [
        { _id:0, host:"computerName:47017" },
        { _id:1, host:"computerName:47018" },
        { _id:2, host:"computerName:47019" }
    ]
}
rs.initiate( config )

Launching configuration servers:

mongod --dbpath \c1\db --configsvr --port 37017
mongod --dbpath \c2\db --configsvr --port 37018
mongod --dbpath \c3\db --configsvr --port 37019

Launching sharding routers:

mongos --port 27077 --configdb computerName:37017, computerName:37018, computerName:37019
mongos --port 27078 --configdb computerName:37017, computerName:37018, computerName:37019

All okay until here, but In getting an error message in the next step

sh.addShard('rs1/computerName:27017')

I'm getting the follow error:

{
    "ok" : 0.0,   
    "errmsg" : "no such command: 'addShard', bad cmd: '{ addShard: \"rs1/computerName:27017\" }'",
"code" : 59
}

I can not seem to get around from this error message.

Any ideas on what am I missing.

Thanks

Answer 1

as per documentation

Run addShard when connected to a mongos instance. The command takes the following form when adding a single database instance as a shard

when you run this connected to mongo shell you will get that error, so you need to connect to let say mongo --port 27078 and issue that command.

mongo --host <hostname of machine running mongos> --port <port mongos listens on>

manaual

more here and here