mongodb 集群搭建 分片+副本集
mkdir -p /home/mongodb/conf
mkdir -p /home/mongodb/mongos/log
mkdir -p /home/mongodb/config/data
mkdir -p /home/mongodb/config/log
mkdir -p /home/mongodb/shard1/data
mkdir -p /home/mongodb/shard1/log
mkdir -p /home/mongodb/shard2/data
mkdir -p /home/mongodb/shard2/log
mkdir -p /home/mongodb/shard3/data
mkdir -p /home/mongodb/shard3/log
#config.conf
pidfilepath = /home/mongodb/config/log/configsrv.pid
dbpath = /home/mongodb/config/data
logpath = /home/mongodb/config/log/congigsrv.log
logappend = true
bind_ip = 0.0.0.0
port = 23000
fork = true
configsvr = true
replSet=config-server
maxConns=20000
配置config-server：
啟動三臺服務器的config server
mongod -f /home/mongodb/conf/config.conf
登錄任意一臺配置服務器，初始化配置副本集
#連接
mongo --port 23000
#config變量
config = {
_id : "config-server",
members : [
{_id : 0, host : "192.168.147.134:23000" },
{_id : 1, host : "192.168.147.135:23000" },
{_id : 2, host : "192.168.147.136:23000" }
]
}
#初始化副本集
rs.initiate(config)
#shard1.conf
pidfilepath = /home/mongodb/shard1/log/shard1.pid
dbpath = /home/mongodb/shard1/data
logpath = /home/mongodb/shard1/log/shard1.log
logappend = true
bind_ip = 0.0.0.0
port = 23001
fork = true
replSet=shard1-server
shardsvr = true
maxConns=20000
配置shard1-server: ##shard2-server shard3-server 類似
啟動三臺服務器的shard1 server
mongod -f /home/mongodb/conf/shard1.conf
登陸任意一臺服務器，初始化副本集
mongo --port 23001
#使用admin數據庫
use admin
#定義副本集配置，第三個節點的 "arbiterOnly":true 代表其為仲裁節點。
config = {
_id : "shard1-server",
members : [
{_id : 0, host : "192.168.147.135:23001" },
{_id : 1, host : "192.168.147.134:23001" },
{_id : 2, host : "192.168.147.136:23001", arbiterOnly: true }
]
}
#初始化副本集配置
rs.initiate(config);
#shard2.conf
pidfilepath = /home/mongodb/shard2/log/shard2.pid
dbpath = /home/mongodb/shard2/data
logpath = /home/mongodb/shard2/log/shard2.log
logappend = true
bind_ip = 0.0.0.0
port = 23002
fork = true
replSet=shard2-server
shardsvr = true
maxConns=20000
#shard3.conf
pidfilepath = /home/mongodb/shard3/log/shard3.pid
dbpath = /home/mongodb/shard3/data
logpath = /home/mongodb/shard3/log/shard3.log
logappend = true
bind_ip = 0.0.0.0
port = 23003
fork = true
replSet=shard3-server
shardsvr = true
maxConns=20000
#mongos.conf
pidfilepath = /home/mongodb/mongos/log/mongos.pid
logpath = /home/mongodb/mongos/log/mongos.log
logappend = true
bind_ip = 0.0.0.0
port = 40000
fork = true
configdb = config-server/192.168.147.134:23000,192.168.147.135:23000,192.168.147.135:23000
maxConns=20000
##配置mongos
啟動三臺服務器的mongos server
mongos -f /home/mongodb/conf/mongos.conf
5、啟用分片
目前搭建了mongodb配置服務器、路由服務器，各個分片服務器，不過應用程序連接到mongos路由服務器並不能使用分片機制，還需要在程序裏設置分片配置，讓分片生效。
登陸任意一臺mongos
mongo --port 40000
#使用admin數據庫
user admin
#串聯路由服務器與分配副本集
sh.addShard("shard1-server/192.168.147.135:23001,192.168.147.134:23001,192.168.147.136:23001")
sh.addShard("shard2-server/192.168.147.135:23002,192.168.147.134:23002,192.168.147.136:23002")
sh.addShard("shard3-server/192.168.147.135:23003,192.168.147.134:23003,192.168.147.136:23003")
#查看集群狀態
sh.status()
###啟動關閉
mongodb的啟動順序是，先啟動配置服務器，在啟動分片，最後啟動mongos.
mongod -f /usr/local/mongodb/conf/config.conf
mongod -f /usr/local/mongodb/conf/shard1.conf
mongod -f /usr/local/mongodb/conf/shard2.conf
mongod -f /usr/local/mongodb/conf/shard3.conf
mongod -f /usr/local/mongodb/conf/mongos.conf
關閉時，直接killall殺掉所有進程
killall mongod
killall mongos
測試：
我們設置testdb的 table1 表需要分片，根據 id 自動分片到 shard1 ，shard2，shard3 上面去。要這樣設置是因為不是所有mongodb 的數據庫和表 都需要分片！
#指定testdb分片生效
db.runCommand( { enablesharding :"testdb"});
#指定數據庫裏需要分片的集合和片鍵
db.runCommand( { shardcollection : "testdb.table1",key : {id: 1} } )
for (var i = 1; i <= 100000; i++){
db.table1.save({id:i,"test1":"testval1"})}
通過 db.table1.stats()查看 數據落到了那個shard上面
參考：
https://zhuanlan.zhihu.com/p/28600032
http://www.mongodb.org.cn/tutorial/53.html
本文出自 “nginx安裝優化” 博客，請務必保留此出處http://mrdeng.blog.51cto.com/3736360/1971578
mongodb 集群搭建 分片+副本集