mongos (mongodb) sharding start script for debug

mongosが安定してきたので一安心。

==
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