三臺機器html
關閉防火牆node
systemctl stop firewalld.service
192.168.252.121 | 192.168.252.122 | 192.168.252.123 |
---|---|---|
mongos | mongos | mongos |
config server | config server | config server |
shard server1 主節點 | shard server1 副節點 | shard server1 仲裁 |
shard server2 仲裁 | shard server2 主節點 | shard server2 副節點 |
shard server3 副節點 | shard server3 仲裁 | shard server3 主節點 |
端口分配:linux
mongos:20000 config:21000 shard1:27001 shard2:27002 shard3:27003
下載而且安裝mongodb
wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-amazon-3.6.2.tgz tar -xzvf mongodb-linux-x86_64-amazon-3.6.2.tgz -C /usr/local/
全部版本二進制文件,自行下載數據庫
https://www.mongodb.org/dl/win32/x86_64-2008plus-ssl?_ga=2.87139544.1567998244.1517190032-1153843332.1517190032&_gac=1.204211492.1517212002.EAIaIQobChMI44v9_9b82AIV1AcqCh0lcABIEAAYASAAEgKI1_D_BwE
更名ubuntu
cd /usr/local/ mv mongodb-linux-x86_64-amazon-3.6.2 mongodb
分別在每臺機器創建conf、mongos、config、shard一、shard二、shard3六個目錄,由於mongos不存儲數據,只須要創建日誌文件目錄便可。centos
mkdir -p /usr/local/mongodb/conf \ mkdir -p /usr/local/mongodb/mongos/log \ mkdir -p /usr/local/mongodb/config/data \ mkdir -p /usr/local/mongodb/config/log \ mkdir -p /usr/local/mongodb/shard1/data \ mkdir -p /usr/local/mongodb/shard1/log \ mkdir -p /usr/local/mongodb/shard2/data \ mkdir -p /usr/local/mongodb/shard2/log \ mkdir -p /usr/local/mongodb/shard3/data \ mkdir -p /usr/local/mongodb/shard3/log
配置環境變量服務器
vi /etc/profile # MongoDB 環境變量內容 export MONGODB_HOME=/usr/local/mongodb export PATH=$MONGODB_HOME/bin:$PATH
使當即生效app
source /etc/profile
mongodb3.4之後要求配置服務器也建立副本集,否則集羣搭建不成功。運維
(三臺機器)添加配置文件
vi /usr/local/mongodb/conf/config.conf ## 配置文件內容 pidfilepath = /usr/local/mongodb/config/log/configsrv.pid dbpath = /usr/local/mongodb/config/data logpath = /usr/local/mongodb/config/log/congigsrv.log logappend = true bind_ip = 0.0.0.0 port = 21000 fork = true #declare this is a config db of a cluster; configsvr = true #副本集名稱 replSet = configs #設置最大鏈接數 maxConns = 20000
啓動三臺服務器的config server
mongod -f /usr/local/mongodb/conf/config.conf
登陸任意一臺配置服務器,初始化配置副本集
鏈接 MongoDB
mongo --port 21000
config 變量
config = { _id : "configs", members : [ {_id : 0, host : "192.168.252.121:21000" }, {_id : 1, host : "192.168.252.122:21000" }, {_id : 2, host : "192.168.252.123:21000" } ] }
初始化副本集
rs.initiate(config)
其中,"_id" : "configs"應與配置文件中配置的 replicaction.replSetName 一致,"members" 中的 "host" 爲三個節點的 ip 和 port
響應內容以下
> config = { ... _id : "configs", ... members : [ ... {_id : 0, host : "192.168.252.121:21000" }, ... {_id : 1, host : "192.168.252.122:21000" }, ... {_id : 2, host : "192.168.252.123:21000" } ... ] ... } { "_id" : "configs", "members" : [ { "_id" : 0, "host" : "192.168.252.121:21000" }, { "_id" : 1, "host" : "192.168.252.122:21000" }, { "_id" : 2, "host" : "192.168.252.123:21000" } ] } > rs.initiate(config); { "ok" : 1, "operationTime" : Timestamp(1517369899, 1), "$gleStats" : { "lastOpTime" : Timestamp(1517369899, 1), "electionId" : ObjectId("000000000000000000000000") }, "$clusterTime" : { "clusterTime" : Timestamp(1517369899, 1), "signature" : { "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), "keyId" : NumberLong(0) } } } configs:SECONDARY>
此時會發現終端上的輸出已經有了變化。
//從單個一個 > //變成了 configs:SECONDARY>
查詢狀態
configs:SECONDARY> rs.status()
(三臺機器)設置第一個分片副本集
配置文件
vi /usr/local/mongodb/conf/shard1.conf #配置文件內容 #——————————————– pidfilepath = /usr/local/mongodb/shard1/log/shard1.pid dbpath = /usr/local/mongodb/shard1/data logpath = /usr/local/mongodb/shard1/log/shard1.log logappend = true bind_ip = 0.0.0.0 port = 27001 fork = true #副本集名稱 replSet = shard1 #declare this is a shard db of a cluster; shardsvr = true #設置最大鏈接數 maxConns = 20000
啓動三臺服務器的shard1 server
mongod -f /usr/local/mongodb/conf/shard1.conf
登錄任意一臺服務器,初始化副本集(除了192.168.252.123)
鏈接 MongoDB
mongo --port 27001
使用admin數據庫
use admin
定義副本集配置
config = { _id : "shard1", members : [ {_id : 0, host : "192.168.252.121:27001" }, {_id : 1, host : "192.168.252.122:27001" }, {_id : 2, host : "192.168.252.123:27001" , arbiterOnly: true } ] }
初始化副本集配置
rs.initiate(config)
響應內容以下
> use admin switched to db admin > config = { ... _id : "shard1", ... members : [ ... {_id : 0, host : "192.168.252.121:27001" }, ... {_id : 1, host : "192.168.252.122:27001" }, ... {_id : 2, host : "192.168.252.123:27001" , arbiterOnly: true } ... ] ... } { "_id" : "shard1", "members" : [ { "_id" : 0, "host" : "192.168.252.121:27001" }, { "_id" : 1, "host" : "192.168.252.122:27001" }, { "_id" : 2, "host" : "192.168.252.123:27001", "arbiterOnly" : true } ] } > rs.initiate(config) { "ok" : 1 }
此時會發現終端上的輸出已經有了變化。
//從單個一個 > //變成了 shard1:SECONDARY>
查詢狀態
shard1:SECONDARY> rs.status()
設置第二個分片副本集
配置文件
vi /usr/local/mongodb/conf/shard2.conf #配置文件內容 #——————————————– pidfilepath = /usr/local/mongodb/shard2/log/shard2.pid dbpath = /usr/local/mongodb/shard2/data logpath = /usr/local/mongodb/shard2/log/shard2.log logappend = true bind_ip = 0.0.0.0 port = 27002 fork = true #副本集名稱 replSet=shard2 #declare this is a shard db of a cluster; shardsvr = true #設置最大鏈接數 maxConns=20000
啓動三臺服務器的shard2 server
mongod -f /usr/local/mongodb/conf/shard2.conf
鏈接 MongoDB
mongo --port 27002
使用admin數據庫
use admin
定義副本集配置
config = { _id : "shard2", members : [ {_id : 0, host : "192.168.252.121:27002" , arbiterOnly: true }, {_id : 1, host : "192.168.252.122:27002" }, {_id : 2, host : "192.168.252.123:27002" } ] }
初始化副本集配置
rs.initiate(config)
響應內容以下
> use admin switched to db admin > config = { ... _id : "shard2", ... members : [ ... {_id : 0, host : "192.168.252.121:27002" , arbiterOnly: true }, ... {_id : 1, host : "192.168.252.122:27002" }, ... {_id : 2, host : "192.168.252.123:27002" } ... ] ... } { "_id" : "shard2", "members" : [ { "_id" : 0, "host" : "192.168.252.121:27002", "arbiterOnly" : true }, { "_id" : 1, "host" : "192.168.252.122:27002" }, { "_id" : 2, "host" : "192.168.252.123:27002" } ] } > rs.initiate(config) { "ok" : 1 } shard2:SECONDARY> rs.status()
vi /usr/local/mongodb/conf/shard3.conf #配置文件內容 #——————————————– pidfilepath = /usr/local/mongodb/shard3/log/shard3.pid dbpath = /usr/local/mongodb/shard3/data logpath = /usr/local/mongodb/shard3/log/shard3.log logappend = true bind_ip = 0.0.0.0 port = 27003 fork = true #副本集名稱 replSet=shard3 #declare this is a shard db of a cluster; shardsvr = true #設置最大鏈接數 maxConns=20000
啓動三臺服務器的shard3 server
mongod -f /usr/local/mongodb/conf/shard3.conf
登錄任意一臺服務器,初始化副本集(除了192.168.252.121)
mongo --port 27003
使用admin數據庫
use admin
定義副本集配置
config = { _id : "shard3", members : [ {_id : 0, host : "192.168.252.121:27003" }, {_id : 1, host : "192.168.252.122:27003" , arbiterOnly: true}, {_id : 2, host : "192.168.252.123:27003" } ] }
初始化副本集配置
rs.initiate(config)
響應內容以下
> use admin switched to db admin > config = { ... _id : "shard3", ... members : [ ... {_id : 0, host : "192.168.252.121:27003" }, ... {_id : 1, host : "192.168.252.122:27003" , arbiterOnly: true}, ... {_id : 2, host : "192.168.252.123:27003" } ... ] ... } { "_id" : "shard3", "members" : [ { "_id" : 0, "host" : "192.168.252.121:27003" }, { "_id" : 1, "host" : "192.168.252.122:27003", "arbiterOnly" : true }, { "_id" : 2, "host" : "192.168.252.123:27003" } ] } > rs.initiate(config) { "ok" : 1 } shard3:SECONDARY> rs.status()
(三臺機器)先啓動配置服務器和分片服務器,後啓動路由實例啓動路由實例:
vi /usr/local/mongodb/conf/mongos.conf #內容 pidfilepath = /usr/local/mongodb/mongos/log/mongos.pid logpath = /usr/local/mongodb/mongos/log/mongos.log logappend = true bind_ip = 0.0.0.0 port = 20000 fork = true #監聽的配置服務器,只能有1個或者3個 configs爲配置服務器的副本集名字 configdb = configs/192.168.252.121:21000,192.168.252.122:21000,192.168.252.123:21000 #設置最大鏈接數 maxConns = 20000
啓動三臺服務器的mongos server
mongos -f /usr/local/mongodb/conf/mongos.conf
目前搭建了mongodb配置服務器、路由服務器,各個分片服務器,不過應用程序鏈接到mongos路由服務器並不能使用分片機制,還須要在程序裏設置分片配置,讓分片生效。
登錄任意一臺mongos
mongo --port 20000
使用admin數據庫
use admin
串聯路由服務器與分配副本集
sh.addShard("shard1/192.168.252.121:27001,192.168.252.122:27001,192.168.252.123:27001"); sh.addShard("shard2/192.168.252.121:27002,192.168.252.122:27002,192.168.252.123:27002"); sh.addShard("shard3/192.168.252.121:27003,192.168.252.122:27003,192.168.252.123:27003");
查看集羣狀態
sh.status()
響應內容以下
mongos> sh.status() --- Sharding Status --- sharding version: { "_id" : 1, "minCompatibleVersion" : 5, "currentVersion" : 6, "clusterId" : ObjectId("5a713a37d56e076f3eb47acf") } shards: { "_id" : "shard1", "host" : "shard1/192.168.252.121:27001,192.168.252.122:27001", "state" : 1 } { "_id" : "shard2", "host" : "shard2/192.168.252.122:27002,192.168.252.123:27002", "state" : 1 } { "_id" : "shard3", "host" : "shard3/192.168.252.121:27003,192.168.252.123:27003", "state" : 1 } active mongoses: "3.6.2" : 3 autosplit: Currently enabled: yes balancer: Currently enabled: yes Currently running: no Failed balancer rounds in last 5 attempts: 0 Migration Results for the last 24 hours: No recent migrations databases: { "_id" : "config", "primary" : "config", "partitioned" : true } mongos>
目前配置服務、路由服務、分片服務、副本集服務都已經串聯起來了,但咱們的目的是但願插入數據,數據可以自動分片。鏈接在mongos上,準備讓指定的數據庫、指定的集合分片生效。
登錄任意一臺mongos
mongo --port 20000
使用admin數據庫
use admin
指定testdb分片生效
db.runCommand( { enablesharding :"testdb"});
指定數據庫裏須要分片的集合和片鍵,哈希id 分片
db.runCommand( { shardcollection : "testdb.table1",key : {"id": "hashed"} } );
咱們設置testdb的 table1 表須要分片,根據 id 自動分片到 shard1 ,shard2,shard3 上面去。要這樣設置是由於不是全部mongodb 的數據庫和表 都須要分片!
測試分片配置結果
鏈接 MongoDB 路由服務
mongo 127.0.0.1:20000
切換到 testdb 數據庫
use testdb;
插入測試數據
for(i=1;i<=100000;i++){db.table1.insert({"id":i,"name":"penglei"})};
總條數
db.table1.aggregate([{$group : {_id : "$name", totle : {$sum : 1}}}])
查看分片狀況以下
結論數據基本均勻
db.table1.stats();
mongos> db.table1.stats(); { "sharded": true, "capped": false, "ns": "testdb.table1", "count": 100000, "size": 5200000, "storageSize": 1519616, "totalIndexSize": 3530752, "indexSizes": { "_id_": 892928, "id_hashed": 2637824 }, "avgObjSize": 52, "nindexes": 2, "nchunks": 6, "shards": { "shard1": { "ns": "testdb.table1", "size": 1755260, "count": 33755, "avgObjSize": 52, "storageSize": 532480, "capped": false, "wiredTiger": { ...省略不少 } }, "shard2": { "ns": "testdb.table1", "size": 1723436, "count": 33143, "avgObjSize": 52, "storageSize": 479232, "capped": false, "wiredTiger": { ...省略不少 } }, "shard3": { "ns": "testdb.table1", "size": 1721304, "count": 33102, "avgObjSize": 52, "storageSize": 507904, "capped": false, "wiredTiger": { ...省略不少 } } }, "ok": 1, "$clusterTime": { "clusterTime": Timestamp(1517488062, 350), "signature": { "hash": BinData(0, "AAAAAAAAAAAAAAAAAAAAAAAAAAA="), "keyId": NumberLong(0) } }, "operationTime": Timestamp(1517488062, 350) } mongos>
分組查看總數量是:100000
mongos> db.table1.aggregate([{$group : {_id : "$name", totle : {$sum : 1}}}]) { "_id" : "penglei", "totle" : 100000 } mongos>
參考
手把手教你 MongoDB 的安裝與詳細使用(一)
http://www.ymq.io/2018/01/26/MongoDB-1/
手把手教你 MongoDB 的安裝與詳細使用(二)
http://www.ymq.io/2018/01/29/MongoDB-2/
建立索引
db.table1.createIndex({"name":1}) db.table1.getIndexes()
啓動
mongodb的啓動順序是,先啓動配置服務器,在啓動分片,最後啓動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 mongos -f /usr/local/mongodb/conf/mongos.conf
啓動報錯
about to fork child process, waiting until server is ready for connections. forked process: 1303 child process started successfully, parent exiting [root@node1 ~]# mongod -f /usr/local/mongodb/conf/shard1.conf about to fork child process, waiting until server is ready for connections. forked process: 1384
刪除 mongod.lock
cd /usr/local/mongodb/shard1/data rm -rf mongod.lock
關閉防火牆(不關防火牆也會遇到這樣的問題)
systemctl stop firewalld.service
關閉
#debian、ubuntu系統下: apt-get install psmisc #centos或、rhel系統下: yum install psmisc
關閉時,直接killall殺掉全部進程
killall mongod killall mongos
參考:
mongodb 3.4 集羣搭建:分片+副本集 http://www.ityouknow.com/mongodb/2017/08/05/mongodb-cluster-setup.html
Runoob 教程:http://www.runoob.com/mongodb...
Tutorials 教程:Pointhttps://www.tutorialspoint.co...
MongoDB 官網地址:https://www.mongodb.com
MongoDB 官方英文文檔:https://docs.mongodb.com/manual
MongoDB 各平臺下載地址:https://www.mongodb.com/downl...
MongoDB 安裝 https://docs.mongodb.com/manu...