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[经验分享] MongoDB及主从配置

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发表于 2018-10-27 13:30:55 | 显示全部楼层 |阅读模式
  一、Yum安装MongoDB
  1、准备工作
  运行yum命令查看MongoDB的包信息 [root@localhost~]# yum info mongo-10gen
  (提示没有相关匹配的信息,) 说明你的centos系统中的yum源不包含MongoDB的相关资源,所以要在使用yum命令安装MongoDB前需要增加yum源,也就是在 /etc/yum.repos.d/目录中增加 *.repo yum源配置文件
  vi /etc/yum.repos.d/10gen.repo,输入下面的语句:
  [10gen]
  name=10gen
  baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64
  gpgcheck=0
  做好yum源的配置后,如果配置正确执行下面的命令便可以查询MongoDB相关的信息:
  查看mongoDB的服务器包的信息
  [root@localhost geffzhang]# yum info mongo-10gen-server
  Loaded plugins: fastestmirror, security
  Loading mirror speeds from cached hostfile
  * base: mirrors.btte.net
  * extras: mirrors.btte.net
  * updates: mirrors.btte.net
  Installed Packages
  Name        : mongo-10gen-server
  Arch        : x86_64
  Version     : 2.2.3
  Release     : mongodb_1
  Size        : 17 M
  Repo        : installed
  From repo   : aaa
  Summary     : mongo server, sharding server, and support scripts
  URL         : http://www.mongodb.org
  License     : AGPL 3.0
  Description : Mongo (from "huMONGOus") is a schema-free document-oriented database.
  :
  : This package provides the mongo server software, mongo sharding server
  : softwware, default configuration files, and init.d scripts.
  3、安装MongoDB的服务器端和客户端工具
  [root@nagios mongo]# yum -y install  mongo-10gen-server
  [root@nagios mongo]# yum -y install  mongo-10gen
  安装好后可以查看mongd的命令
  [root@nagios mongo]# ls /usr/sbin/mongo
  mongo         mongodump     mongofiles    mongorestore  mongosniff    mongotop
  mongod        mongoexport   mongoimport   mongos        mongostat
  4、启动Mongodb与登陆
  service mongod start
  [root@nagios mongo]# mongo
  MongoDB shell version: 2.0.4
  connecting to: test
  > show dbs;
  admin(empty)
  elaindb0.203125GB
  local4.013671875GB
  以后有更新了,停掉mongodb,执行yum update mongo-10gen mongo-10gen-server 即可
  5、服务器配置: /etc/mongod.conf
  # mongo.conf
  
  #where to log
  logpath=/var/log/mongo/mongod.log
  
  logappend=true #以追加方式写入日志
  
  # fork and run in background
  fork = true
  
  #port = 27017 #端口
  
  dbpath=/var/lib/mongo #数据库文件保存位置
  directoryperdb=true
  # Enables periodic logging of CPU utilization and I/O wait
  #启用定期记录CPU利用率和 I/O 等待
  #cpu = true
  
  # Turn on/off security.  Off is currently the default
  # 是否以安全认证方式运行,默认是不认证的非安全方式
  #noauth = true
  #auth = true
  
  # Verbose logging output.
  # 详细记录输出
  #verbose = true
  
  # Inspect all client data for validity on receipt (useful for
  # developing drivers)用于开发驱动程序时的检查客户端接收数据的有效性
  #objcheck = true
  
  # Enable db quota management 启用数据库配额管理,默认每个db可以有8个文件,可以用quotaFiles参数设置
  #quota = true
  # 设置oplog记录等级
  # Set oplogging level where n is
  #   0=off (default)
  #   1=W
  #   2=R
  #   3=both
  #   7=W+some reads
  #oplog = 0
  
  # Diagnostic/debugging option 动态调试项
  #nocursors = true
  
  # Ignore query hints 忽略查询提示
  #nohints = true
  # 禁用http界面,默认为localhost:28017
  # Disable the HTTP interface (Defaults to localhost:27018).这个端口号写的是错的
  #nohttpinterface = true
  
  # 关闭服务器端脚本,这将极大的限制功能
  # Turns off server-side scripting.  This will result in greatly limited
  # functionality
  #noscripting = true
  # 关闭扫描表,任何查询将会是扫描失败
  # Turns off table scans.  Any query that would do a table scan fails.
  #notablescan = true
  # 关闭数据文件预分配
  # Disable data file preallocation.
  #noprealloc = true
  # 为新数据库指定.ns文件的大小,单位:MB
  # Specify .ns file>
  # nssize =
  
  # Accout token for Mongo monitoring server.
  #mms-token =
  # mongo监控服务器的名称
  # Server name for Mongo monitoring server.
  #mms-name =
  # mongo监控服务器的ping 间隔
  # Ping interval for Mongo monitoring server.
  #mms-interval =
  
  # Replication Options 复制选项
  
  # in replicated mongo databases, specify here whether this is a slave or master 在复制中,指定当前是从属关系
  #slave = true
  #source = master.example.com
  # Slave only: specify a single database to replicate
  #only = master.example.com
  # or
  #master = true
  #source = slave.example.com
  二、MongoDB主从配置
  一、mongodb主从服务器
  1.172.16.1.170  mongodb主服务器
  2.172.16.1.171  mongodb从服务器
  二、主从服务器配置
  1.172.16.1.170配置
  [root@nagios mongo]# cat /etc/mongod.conf
  logpath=/var/log/mongo/mongod.log
  logappend=true
  fork = true
  dbpath=/var/lib/mongo
  pidfilepath = /var/run/mongodb/mongod.pid
  master = true
  source = 172.16.1.171
  port=27017
  2.172.16.1.171配置
  [root@171 mongo]# cat /etc/mongod.conf
  port=27017
  logpath=/var/log/mongo/mongod.log
  logappend=true
  fork = true
  dbpath=/var/lib/mongo
  pidfilepath = /var/run/mongodb/mongod.pid
  slave = true
  source = 172.16.1.170
  3.启动主从服务器mongodb
  service mongod start
  主服务器mongodb日志
  [root@nagios mongo]# tail -f /var/log/mongo/mongod.log
  
  Tue Feb 26 13:44:36 [initandlisten] MongoDB starting : pid=14105 port=27017 dbpath=/var/lib/mongo master=1 64-bit host=nagios
  Tue Feb 26 13:44:36 [initandlisten] db version v2.2.3, pdfile version 4.5
  Tue Feb 26 13:44:36 [initandlisten] git version: f570771a5d8a3846eb7586eaffcf4c2f4a96bf08
  Tue Feb 26 13:44:36 [initandlisten] build info: Linux ip-10-2-29-40 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_49
  Tue Feb 26 13:44:36 [initandlisten] options: { config: "/etc/mongod.conf", dbpath: "/var/lib/mongo", fork: "true", logappend: "true", logpath: "/var/log/mongo/mongod.log", master: "true", pidfilepath: "/var/run/mongodb/mongod.pid", port: 27017, source: "172.16.1.171" }
  Tue Feb 26 13:44:36 [initandlisten] journal dir=/var/lib/mongo/journal
  Tue Feb 26 13:44:36 [initandlisten] recover : no journal files present, no recovery needed
  Tue Feb 26 13:44:37 [websvr] admin web console waiting for connections on port 28017
  Tue Feb 26 13:44:37 [initandlisten] waiting for connections on port 27017
  Tue Feb 26 13:44:48 [initandlisten] connection accepted from 172.16.1.171:45526 #1 (1 connection now open
  从服务器mongodb日志
  [root@171 mongo]# tail -f /var/log/mongo/mongod.log
  Tue Feb 26 13:47:36 [initandlisten] MongoDB starting : pid=7283 port=27017 dbpath=/var/lib/mongo slave=1 64-bit host=171
  Tue Feb 26 13:47:36 [initandlisten] db version v2.2.3, pdfile version 4.5
  Tue Feb 26 13:47:36 [initandlisten] git version: f570771a5d8a3846eb7586eaffcf4c2f4a96bf08
  Tue Feb 26 13:47:36 [initandlisten] build info: Linux ip-10-2-29-40 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_49
  Tue Feb 26 13:47:36 [initandlisten] options: { config: "/etc/mongod.conf", dbpath: "/var/lib/mongo", fork: "true", logappend: "true", logpath: "/var/log/mongo/mongod.log", pidfilepath: "/var/run/mongodb/mongod.pid", port: 27017, slave: "true", source: "172.16.1.170" }
  Tue Feb 26 13:47:36 [initandlisten] journal dir=/var/lib/mongo/journal
  Tue Feb 26 13:47:36 [initandlisten] recover : no journal files present, no recovery needed
  Tue Feb 26 13:47:36 [initandlisten] waiting for connections on port 27017
  Tue Feb 26 13:47:36 [websvr] admin web console waiting for connections on port 28017
  Tue Feb 26 13:47:37 [replslave] repl: syncing from host:172.16.1.170
  测试主从同步数据
  在主服务器173.16.1.170新建数据库
  [root@nagios mongo]# mongo
  MongoDB shell version: 2.0.4
  connecting to: test
  > use zhangfang
  switched to db zhangfang
  > db.blog.save({title:"new zhangfang"})
  从服务器172.16.1.171查看
  [root@171 mongo]# mongo
  MongoDB shell version: 2.2.3
  connecting to: test
  > show dbs;
  elaindb0.203125GB
  local0.203125GB
  zhangfang0.203125GB
  查看日志
  [root@171 mongo]# tail -f /var/log/mongo/mongod.log
  Tue Feb 26 13:55:39 [FileAllocator] allocating new datafile /var/lib/mongo/zhangfang.1, filling with zeroes...
  Tue Feb 26 13:55:39 [conn1] command admin.$cmd command: { listDatabases: 1.0 } ntoreturn:1 keyUpdates:0 locks(micros) R:6 r:33 reslen:234 1424ms
  Tue Feb 26 13:55:41 [replslave] build index zhangfang.blog { _id: 1 }
  Tue Feb 26 13:55:42 [replslave]  fastBuildIndex dupsToDrop:0
  Tue Feb 26 13:55:42 [replslave] build index done.  scanned 1 total records. 1.165 secs
  Tue Feb 26 13:55:42 [replslave] resync: done with initial clone for db: zhangfang
  Tue Feb 26 13:55:45 [FileAllocator] done allocating datafile /var/lib/mongo/zhangfang.1,>
  Tue Feb 26 13:56:23 [conn1] end connection 127.0.0.1:54288 (0 connections now open)
  Tue Feb 26 13:56:24 [initandlisten] connection accepted from 127.0.0.1:54290 #2 (1 connection now open)
  Tue Feb 26 13:56:39 [conn2] end connection 127.0.0.1:54290 (0 connections now open)
  Tue Feb 26 13:56:58 [replslave] repl:   checkpoint applied 9 operations
  Tue Feb 26 13:56:58 [replslave] repl:   syncedTo: Feb 26 13:53:59 512c4df7:1
  说明主从数据同步成功


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