Deploy a Sharded and replicated database for testing

replica_and_shard_mongo

//start mongod instances for replica set rs0
mongod --port 27010 --dbpath data/rs0-0 --replSet rs0 --smallfiles --oplogSize 128
mongod --port 27011 --dbpath data/rs0-1 --replSet rs0 --smallfiles --oplogSize 128
 
//add primary
mongo --port 27010
rsconf = {
           _id: "rs0",
           members: [
                      {
                       _id: 0,
                       host: "localhost:27010"
                      }
                    ]
         }
 
rs.initiate( rsconf )
rs.conf()
 
//add secondaries
rs.add("localhost:27011")

//set 0 priority
cfg = rs.conf()
cfg.members[1].priority = 0
rs.reconfig(cfg)

//start mongod instances for replica set rs1
mongod --port 27012 --dbpath data/rs1-0 --replSet rs1 --smallfiles --oplogSize 128
mongod --port 27013 --dbpath data/rs1-1 --replSet rs1 --smallfiles --oplogSize 128

//add primary
mongo --port 27012
rsconf = {
           _id: "rs1",
           members: [
                      {
                       _id: 0,
                       host: "localhost:27012"
                      }
                    ]
         }
 
rs.initiate( rsconf )
rs.conf()
 
//add secondaries
rs.add("localhost:27013")

//set 0 priority
cfg = rs.conf()
cfg.members[1].priority = 0
rs.reconfig(cfg)

//start the config server
mongod --configsvr --dbpath data/configsvr-0 --port 27015

//start the router
mongos --configdb localhost:27015 --port 27017

//add shards
mongo --port 27017
sh.addShard( "rs0/localhost:27010" )
sh.addShard( "rs1/localhost:27012" )

//add tags to distribute data between shards
sh.addShardTag("rs0", "DATACENTER0")
sh.addShardTag("rs1", "DATACENTER1")

sh.enableSharding("sharded_test_db")
sh.shardCollection("sharded_test_db.users", { "zipcode": 1 } )
sh.shardCollection("sharded_test_db.test_collection", { "_id": "hashed" } )
 
use sharded_test_db
 
db.users.insert({name:"G", "zipcode": 25030 })
db.users.insert({name:"P", "zipcode": 25030 })
db.users.insert({name:"A", "zipcode": 25030 })
db.users.insert({name:"S", "zipcode": 25030 })
 
db.users.insert({name:"X", "zipcode": 31230 })
db.users.insert({name:"Y", "zipcode": 31230 })
db.users.insert({name:"Z", "zipcode": 31230 })
db.users.insert({name:"SA", "zipcode": 20030 })
 
sh.addTagRange("sharded_test_db.users", { zipcode: 0 }, { zipcode: 29999 }, "DATACENTER0")
sh.addTagRange("sharded_test_db.users", { zipcode: 30000 }, { zipcode: 39999 }, "DATACENTER1")
 
//verify data distribution
use config
db.chunks.find({ns: "sharded_test_db.users"}, {shard:1, _id:0}).sort({shard:1})