MongoDB主从复制小实验


		MongoDB主从复制小实验
 
  操作环境描述：WIN8  64位操作系统，内装虚拟机为CentOS 5.5 32位系统。
 
  操作描述：跟其他关系型数据库类似，在主库进行数据操作，将数据同步到从节点，从节点可以配置多个。在本次试验中，master节点为主节点，我们在master节点中的对数据的插入、修改、删除操作都会同步到slave1和slave2节点。
 
  以下为实验步骤：
 
 （1）建立数据目录，数据目录用来存放过程中的数据。
 
 
[plain] 
[root@h3 dbs]# pwd  
/var/lib/mongo/dbs  
[root@h3 dbs]# ls  
master  slave1  slave2  
[root@h3 dbs]#  
 
（2）启动master节点：
[plain] 
启动master  
[root@h3 dbs]# mongod --dbpath /var/lib/mongo/dbs/master --port  10000  --master  --rest  --nojournal  
Fri Aug  2 14:10:25.498 [initandlisten] MongoDB starting : pid=19491 port=10000 dbpath=/var/lib/mongo/dbs/master master=1 32-bit host=h3  
Fri Aug  2 14:10:25.498 [initandlisten]  
Fri Aug  2 14:10:25.498 [initandlisten] ** NOTE: This is a 32 bit MongoDB binary.  
Fri Aug  2 14:10:25.498 [initandlisten] **       32 bit builds are limited to less than 2GB of data (or less with --journal).  
Fri Aug  2 14:10:25.498 [initandlisten] **       Note that journaling defaults to off for 32 bit and is currently off.  
Fri Aug  2 14:10:25.499 [initandlisten] **       See http://dochub.mongodb.org/core/32bit  
Fri Aug  2 14:10:25.499 [initandlisten]  
Fri Aug  2 14:10:25.500 [initandlisten] db version v2.4.5  
Fri Aug  2 14:10:25.500 [initandlisten] git version: a2ddc68ba7c9cee17bfe69ed840383ec3506602b  
Fri Aug  2 14:10:25.500 [initandlisten] build info: Linux bs-linux32.10gen.cc 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 BOOST_LIB_VERSION=1_49  
Fri Aug  2 14:10:25.500 [initandlisten] allocator: system  
Fri Aug  2 14:10:25.500 [initandlisten] options: { dbpath: "/var/lib/mongo/dbs/master", master: true, nojournal: true, port: 10000, rest: true }  
Fri Aug  2 14:10:25.540 [FileAllocator] allocating new datafile /var/lib/mongo/dbs/master/local.ns, filling with zeroes...  
Fri Aug  2 14:10:25.542 [FileAllocator] creating directory /var/lib/mongo/dbs/master/_tmp  
Fri Aug  2 14:10:26.094 [FileAllocator] done allocating datafile /var/lib/mongo/dbs/master/local.ns, size: 16MB,  took 0.545 secs  
Fri Aug  2 14:10:26.094 [FileAllocator] allocating new datafile /var/lib/mongo/dbs/master/local.0, filling with zeroes...  
Fri Aug  2 14:10:26.763 [FileAllocator] done allocating datafile /var/lib/mongo/dbs/master/local.0, size: 16MB,  took 0.667 secs  
Fri Aug  2 14:10:26.785 [initandlisten] command local.$cmd command: { create: "startup_log", size: 10485760, capped: true } ntoreturn:1 keyUpdates:0  reslen:37 12   45ms  
Fri Aug  2 14:10:26.796 [initandlisten] ******  
Fri Aug  2 14:10:26.796 [initandlisten] creating replication oplog of size: 50MB...  
Fri Aug  2 14:10:26.799 [FileAllocator] allocating new datafile /var/lib/mongo/dbs/master/local.1, filling with zeroes...  
Fri Aug  2 14:10:30.116 [FileAllocator] done allocating datafile /var/lib/mongo/dbs/master/local.1, size: 64MB,  took 3.314 secs  
Fri Aug  2 14:10:30.243 [initandlisten] ******  
Fri Aug  2 14:10:30.245 [initandlisten] waiting for connections on port 10000  
Fri Aug  2 14:10:30.247 [websvr] admin web console waiting for connections on port 11000  
Fri Aug  2 14:16:52.604 [initandlisten] connection accepted from 127.0.0.1:33749 #1 (1 connection now open)  
Fri Aug  2 14:16:53.885 [slaveTracking] build index local.slaves { _id: 1 }  
Fri Aug  2 14:16:53.894 [slaveTracking] build index done.  scanned 0 total records. 0.008 secs  
 
（3）启动slave1节点：
[plain] 
[root@h3 ~]# mongod -dbpath /var/lib/mongo/dbs/slave1 --port 10001  --slave  --rest --nojournal  --source localhost:10000  
Fri Aug  2 14:16:50.050 [initandlisten] MongoDB starting : pid=19513 port=10001 dbpath=/var/lib/mongo/dbs/slave1 slave=1 32-bit host=h3  
Fri Aug  2 14:16:50.051 [initandlisten]  
Fri Aug  2 14:16:50.052 [initandlisten] ** NOTE: This is a 32 bit MongoDB binary.  
Fri Aug  2 14:16:50.053 [initandlisten] **       32 bit builds are limited to less than 2GB of data (or less with --journal).  
Fri Aug  2 14:16:50.053 [initandlisten] **       Note that journaling defaults to off for 32 bit and is currently off.  
Fri Aug  2 14:16:50.054 [initandlisten] **       See http://dochub.mongodb.org/core/32bit  
Fri Aug  2 14:16:50.055 [initandlisten]  
Fri Aug  2 14:16:50.055 [initandlisten] db version v2.4.5  
Fri Aug  2 14:16:50.056 [initandlisten] git version: a2ddc68ba7c9cee17bfe69ed840383ec3506602b  
Fri Aug  2 14:16:50.056 [initandlisten] build info: Linux bs-linux32.10gen.cc 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 BOOST_LIB_VERSION=1_49  
Fri Aug  2 14:16:50.057 [initandlisten] allocator: system  
Fri Aug  2 14:16:50.058 [initandlisten] options: { dbpath: "/var/lib/mongo/dbs/slave1", nojournal: true, port: 10001, rest: true, slave: true, source: "localhost:  10000" }  
Fri Aug  2 14:16:50.080 [FileAllocator] allocating new datafile /var/lib/mongo/dbs/slave1/local.ns, filling with zeroes...  
Fri Aug  2 14:16:50.081 [FileAllocator] creating directory /var/lib/mongo/dbs/slave1/_tmp  
Fri Aug  2 14:16:50.520 [FileAllocator] done allocating datafile /var/lib/mongo/dbs/slave1/local.ns, size: 16MB,  took 0.412 secs  
Fri Aug  2 14:16:50.521 [FileAllocator] allocating new datafile /var/lib/mongo/dbs/slave1/local.0, filling with zeroes...  
Fri Aug  2 14:16:51.512 [FileAllocator] done allocating datafile /var/lib/mongo/dbs/slave1/local.0, size: 16MB,  took 0.989 secs  
Fri Aug  2 14:16:51.520 [initandlisten] command local.$cmd command: { create: "startup_log", size: 10485760, capped: true } ntoreturn:1 keyUpdates:0  reslen:37 14  41ms  
Fri Aug  2 14:16:51.524 [websvr] admin web console waiting for connections on port 11001  
Fri Aug  2 14:16:51.525 [initandlisten] waiting for connections on port 10001  
Fri Aug  2 14:16:52.577 [replslave] build index local.sources { _id: 1 }  
Fri Aug  2 14:16:52.583 [replslave] build index done.  scanned 0 total records. 0.004 secs  
Fri Aug  2 14:16:52.595 [replslave] repl: syncing from host:localhost:10000  
Fri Aug  2 14:16:52.657 [replslave] build index local.me { _id: 1 }  
Fri Aug  2 14:16:52.662 [replslave] build index done.  scanned 0 total records. 0.004 secs  
Fri Aug  2 14:19