MongoDB Master-Slave

Data storage is a very important part of the entire system, in MySQL, Redis has a master-slave architecture, to a certain extent, to ensure the security of data and high availability, and MongoDB is also the implementation of this way. Master-Slave configuration is very simple, but with the development of technology has rarely adopted a master-slave architecture, and more is the use of replica sets or cluster mode to achieve high availability.

A simple introduction to MongoDB master-slave implementation of the Way and

Environment:

Operating system: CentOS 6.7

mongodb:3.4.5

Master Data Catalog:/data/mongomaster

From the Data Catalog:/data/mongoslave

MongoDB Management Command Environment variables:

Export path= "$PATH:/home/mongodb/mongodb/mongodb-3.4.5/bin"

Start the main

Mongod--dbpath=/data/mongomaster/--port 10000--master--logpath=/data/mongomaster/masterlog--logappend--fo Rkbout to fork child process, waiting until server are ready for connections.forked Process:3114child process started SUCC essfully, parent Exiting[[email protected] data]#

Start from

Mongod--dbpath=/data/mongoslave/--logpath=/data/mongoslave/slave.log--logappend--port 10002--slave--source 192.168.1.130:10000--forkabout to fork child process, waiting until server was ready for connections.forked process:314 4child process started successfully, parent exiting

Test Create MONGO Library Winne collection insert document data on Main library

> Use mongoswitched to DB mongo> show Dbsadmin 0.000GBlocal 0.003GBmaster 0.002gb> dbmongo> for (I=0;I&L t;10000;i++) Db.mongo.insert ({"name": "Linux"}, {"Object": "Docker"}, {"Age": i}) Writeresult ({"ninserted": 1}) >

Test from Library

> Show dbs2017-05-20t14:14:42.526+0800 E QUERY [thread1] error:listdatabases failed:{"OK": 0, "errmsg": "Not mast ER and Slaveok=false "," code ": 13435," codename ":" Notmasternoslaveok "}: [Email protected]/mongo/shell/utils.js:25:13[ Email Protected]/mongo/shell/mongo.js:62:1[email protected]/mongo/shell/utils.js:769:19[email protected]/mongo/ shell/utils.js:659:15@ (SHELLHELP2): 1:1,

What happened to the error? Looking for information and so on, key information not master and Slaveok=false and Notmasternoslaveok random search, the result is a lot of this error, are said that the default from the library does not support read-write, such as Redis is not supported write, MongoDB is more magical, directly unreadable, from a simple configuration from the library, and then look.

2017-05-20t14:17:40.067+0800 E QUERY [Thread1] syntaxerror:illegal character @ (Shell):1:1> Rs.slaveok () > Show D Bsadmin 0.000GBlocal 0.000GBmaster 0.002GBmongo 0.000gb2017-05-20t14:17:40.067+0800 E QUERY [Thread1] Syntaxerro R:illegal character @ (Shell):1:1> Rs.slaveok () > Show dbsadmin 0.000GBlocal 0.000GBmaster 0.002GBmongo 0.000 GB

Verified Data Synchronization

This article is from the "Keep Dreaming" blog, please be sure to keep this source http://dreamlinux.blog.51cto.com/9079323/1942212

MongoDB Master-Slave