==
ディレクトリ作る（ec2の場合とりあえず、/mnt以下へ)
==
$ sudo mkdir /mnt/data/shards
$ sudo mkdir /mnt/data/shards/0 /mnt/data/shards/1 /mnt/data/shards/2
$ sudo mkdir /mnt/data/shards/config
$ sudo chown mongodb:mongodb -R /mnt/data/shards
==
mongosの設定
==
$ sudo -u mongodb -H mongo
> use admin
> db.runCommand( {addshard : "localhost:27020", allowLocal : true} );
> db.runCommand( {addshard : "localhost:27021", allowLocal : true} );
> db.runCommand( {addshard : "localhost:27022", allowLocal : true} );
# Listing shards
> db.runCommand( { listshards : 1 } );
#Enabling Sharding on a Database
> db.runCommand( { enablesharding : "dbname" } );
#Sharding a Collection
> db.runCommand( { shardcollection : "dbname.collection_name" , key : { "_id" : 1 } , unique : true } );
==
簡易スタートスクリプト
==
#!/bin/bash
sudo -u mongodb -H mongod \
--configsvr \
--dbpath /mnt/data/shards/config \
--fork \
--port 27019 \
--logpath /var/log/mongodb/mongodb.config.log &
sleep 2
sudo mongos \
-vvv \
--port 27017 \
--fork \
--configdb localhost:27019 \
--logpath /var/log/mongodb/mongos.log &
sleep 2
sudo -u mongodb -H mongod \
--shardsvr \
--port 27020 \
--fork \
--dbpath /mnt/data/shards/0 \
--logpath /var/log/mongodb/mongodb.shard.log &
sudo -u mongodb -H mongod \
--shardsvr \
--port 27021 \
--fork \
--dbpath /mnt/data/shards/1 \
--logpath /var/log/mongodb/mongodb.shard.log &
sudo -u mongodb -H mongod \
--shardsvr \
--port 27022 \
--fork \
--dbpath /mnt/data/shards/2 \
--logpath /var/log/mongodb/mongodb.shard.log &
print '-------------------------------------'
ps -o pid,command ax | grep mongos | grep -v grep |cut -d' ' -f1
print '-------------------------------------'
ps -o pid,command ax | grep mongos | grep -v grep |cut -d' ' -f1 > /tmp/mongo.pid
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