環(huán)境
右玉網(wǎng)站建設(shè)公司創(chuàng)新互聯(lián)建站,右玉網(wǎng)站設(shè)計(jì)制作,有大型網(wǎng)站制作公司豐富經(jīng)驗(yàn)。已為右玉1000+提供企業(yè)網(wǎng)站建設(shè)服務(wù)。企業(yè)網(wǎng)站搭建\成都外貿(mào)網(wǎng)站制作要多少錢,請找那個售后服務(wù)好的右玉做網(wǎng)站的公司定做!172.16.115.202 primary
172.16.111.171 secondary
172.16.115.157 secondary
一、MongoDB安裝
1. yum下載安裝mongodb
擴(kuò)展源http://repo.mongodb.org/yum/redhat/mongodb-org-3.0.repo
mongodb-org-3.0.7-1.el6.x86_64.rpm #元數(shù)據(jù)包,它可以實(shí)現(xiàn)自動安裝下面的4個組件包
mongodb-org-mongos-3.0.7-1.el6.x86_64.rpm # mongod守護(hù)程序,以及相關(guān)的配置和初始化腳本
mongodb-org-server-3.0.7-1.el6.x86_64.rpm # mongos守護(hù)程序
mongodb-org-shell-3.0.7-1.el6.x86_64.rpm # ongo shell環(huán)境
mongodb-org-tools-3.0.7-1.el6.x86_64.rpm # MongoDB工具
2. 編輯配置文件vim /etc/mongod.conf
1)去掉以下兩行以#開頭的注釋,以防重啟報錯
fork:true
pidFilePath:/var/mongodb/mongod.pid
2)bind_ip綁定多個IP,用逗號隔開,如監(jiān)聽全部,留空即可
3. 修改配置參數(shù),啟動mongd
echo never > /sys/kernel/mm/transparent_hugepage/enabled
echo never > /sys/kernel/mm/transparent_hugepage/defrag
編輯vim /etc/security/limits.conf,加入內(nèi)容:
mongod soft nofile 64000
mongod hard nofile 64000
mongod soft nproc 32000
mongod hard nproc 32000
service mongd start
注:啟動過程較慢,這是它在寫數(shù)據(jù)/var/lib/mongo,如果啟動不了,mongod -f /etc/mongod.conf方式,可以看到報錯
4. 編輯三臺機(jī)器的MongoDB配置文件vim /etc/mongod.conf,重啟
內(nèi)容:
##1)去掉replication的注釋
##2)加入下面參數(shù)(注意首行留空2個空格,固定格式):
## 類似于二進(jìn)制日志
oplogSizeMB: 20
## 副本集名字
replSetName: huangzhenping
5. 查看日志文件tail /var/log/mongodb/mongod.log
6. 主上配置,搭建副本集
use admin # 主上進(jìn)入admin庫
config={_id:"huangzhenping",members:[{_id:0,host:"172.16.115.202:27017"},{_id:1,host:"172.16.115.157:27017"},{_id:2,host:"172.16.111.171:27017"}]} #配置機(jī)器
rs.initiate(config) #刷新
rs.status() #查看狀態(tài)
如下結(jié)果:出現(xiàn)三臺機(jī)器的信息,主的狀態(tài)已變?yōu)镻RIMARY
> rs.initiate(config) { "ok" : 1 } huangzhenping:OTHER> rs.status() { "set" : "huangzhenping", "date" : ISODate("2017-01-14T20:24:59.490Z"), "myState" : 1, "members" : [ { "_id" : 0, "name" : "172.16.115.202:27017", "health" : 1, "state" : 1, "stateStr" : "PRIMARY", "uptime" : 297, "optime" : Timestamp(1484425453, 1), "optimeDate" : ISODate("2017-01-14T20:24:13Z"), "electionTime" : Timestamp(1484425455, 1), "electionDate" : ISODate("2017-01-14T20:24:15Z"), "configVersion" : 1, "self" : true }, { "_id" : 1, "name" : "172.16.115.157:27017", "health" : 1, "state" : 2, "stateStr" : "SECONDARY", "uptime" : 45, "optime" : Timestamp(1484425453, 1), "optimeDate" : ISODate("2017-01-14T20:24:13Z"), "lastHeartbeat" : ISODate("2017-01-14T20:24:57.851Z"), "lastHeartbeatRecv" : ISODate("2017-01-14T20:24:58.343Z") , "pingMs" : 0, "configVersion" : 1 }, { "_id" : 2, "name" : "172.16.111.171:27017", "health" : 1, "state" : 2, "stateStr" : "SECONDARY", "uptime" : 45, "optime" : Timestamp(1484425453, 1), "optimeDate" : ISODate("2017-01-14T20:24:13Z"), "lastHeartbeat" : ISODate("2017-01-14T20:24:57.863Z"), "lastHeartbeatRecv" : ISODate("2017-01-14T20:24:58.262Z") , "pingMs" : 1, "configVersion" : 1 } ], "ok" : 1 } huangzhenping:PRIMARY>注:
1)如執(zhí)行rs.status()命令,沒有發(fā)現(xiàn)三臺機(jī)器,需手動執(zhí)行添加
rs.add("172.16.115.157")
rs.add("172.16.111.171")
2)如從機(jī)的狀態(tài)為"stateStr":"STARTUP",則需執(zhí)行:
var config={_id:"huangzhenping",members:[{_id:0,host:"172.16.115.202:27017"},{_id:1,host:"172.16.115.157:27017"},{_id:2,host:"172.16.111.171:27017"}]}
rs.initiate(config)
7. 從上登錄,狀態(tài)已變?yōu)椋篠ECONDARY
二、MongoDB主從測試
1. mongodb副本集測試
1)主上建庫,建集合
use mydb
db.createCollection('testA')
show dbs
show tables
2)從上查看,已成功同步庫和集合
rs.slaveOk()
show dbs
2. 副本集更改權(quán)重,模擬主宕機(jī)
1)主上設(shè)置不同的權(quán)重,并查看
cfg = rs.conf()
cfg.members[0].priority = 3
cfg.members[1].priority = 2
cfg.members[2].priority = 1
rs.reconfig(cfg)
rs.config()
查看生效的權(quán)重:
huangzhenping:PRIMARY> rs.config() { "_id" : "huangzhenping", "version" : 2, "members" : [ { "_id" : 0, "host" : "172.16.115.202:27017", "arbiterOnly" : false, "buildIndexes" : true, "hidden" : false, "priority" : 3, "tags" : { }, "slaveDelay" : 0, "votes" : 1 }, { "_id" : 1, "host" : "172.16.115.157:27017", "arbiterOnly" : false, "buildIndexes" : true, "hidden" : false, "priority" : 2, "tags" : { }, "slaveDelay" : 0, "votes" : 1 }, { "_id" : 2, "host" : "172.16.111.171:27017", "arbiterOnly" : false, "buildIndexes" : true, "hidden" : false, "priority" : 1, "tags" : { }, "slaveDelay" : 0, "votes" : 1 } ], "settings" : { "chainingAllowed" : true, "heartbeatTimeoutSecs" : 10, "getLastErrorModes" : { }, "getLastErrorDefaults" : { "w" : 1, "wtimeout" : 0 } } }2) 主上禁用27017端口,模擬主宕機(jī)
iptables -I INPUT -p tcp --dport 27017 -j DROP
原主上:已連接失敗
原一臺從機(jī):狀態(tài)已變?yōu)镻RIMARY
rs.status()查看狀態(tài):
huangzhenping:PRIMARY> rs.status() { "set" : "huangzhenping", "date" : ISODate("2017-01-22T15:48:15.453Z"), "myState" : 1, "members" : [ { "_id" : 0, "name" : "172.16.115.202:27017", "health" : 0, "state" : 8, "stateStr" : "(not reachable/healthy)", "uptime" : 0, "optime" : Timestamp(0, 0), "optimeDate" : ISODate("1970-01-01T00:00:00Z"), "lastHeartbeat" : ISODate("2017-01-22T15:48:14.551Z"), "lastHeartbeatRecv" : ISODate("2017-01-22T15:48:14.632Z"), "pingMs" : 0, "lastHeartbeatMessage" : "Failed attempt to connect to 172.16.115.202:27017; couldn't connect to server 172.16.115.202:27017 (172.16.115.202), connection attempt failed", "configVersion" : -1 }, { "_id" : 1, "name" : "172.16.115.157:27017", "health" : 1, "state" : 1, "stateStr" : "PRIMARY", "uptime" : 16333, "optime" : Timestamp(1484429320, 1), "optimeDate" : ISODate("2017-01-14T21:28:40Z"), "electionTime" : Timestamp(1485100022, 1), "electionDate" : ISODate("2017-01-22T15:47:02Z"), "configVersion" : 2, "self" : true }, { "_id" : 2, "name" : "172.16.111.171:27017", "health" : 1, "state" : 2, "stateStr" : "SECONDARY", "uptime" : 5989, "optime" : Timestamp(1484429320, 1), "optimeDate" : ISODate("2017-01-14T21:28:40Z"), "lastHeartbeat" : ISODate("2017-01-22T15:48:14.751Z"), "lastHeartbeatRecv" : ISODate("2017-01-22T15:48:14.749Z"), "pingMs" : 0, "lastHeartbeatMessage" : "could not find member to sync from", "configVersion" : 2 } ], "ok" : 1 }3)新主上,創(chuàng)建一個庫和集合
use mydb2
db.createCollection('testB')
4)恢復(fù)舊主,則自動切換為MASTER狀態(tài),并同步自己離線時新主上創(chuàng)建的庫
iptables -D INPUT -p tcp --dport 27017 -j DROP
三、MongoDB結(jié)合php
1. 下載安裝mongo擴(kuò)展模塊
wgethttps://github.com/mongodb/mongo-php-driver-legacy/archive/master.zip
unzip mongo-php-driver-legacy-master.zip
cd mongo-php-driver-legacy-master
/usr/bin/phpize
./configure --with-php-config=/usr/bin/php-config
make;make install
2. 編輯php配置文件vim /etc/php.ini,加載擴(kuò)展模塊
3. 編輯測試文件 vim /usr/local/apache2/htdocs/1.php
內(nèi)容:
<?php // 連接到mongodb $m = new MongoClient(); echo "Connection to database successfully"; // 選擇一個數(shù)據(jù)庫 $db = $m->mydb; echo "Database mydb selected"; ?>4. 測試 curl localhost/1.php
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