mongodb arbiter

Recently, a new project needs to use MongoDB's master,slave,arbiter architecture, go to the official website to turn over the document, write a simple script. The script can be found on my GitHub

1, Replication IntroductionMongoDB replication is the replication of data in multiple servers, the purpose of data replication is to provide redundancy and improve the availability of data, the operation of data replication on different database

mongodb-sharding Deployment ScenariosFirst, Deployment Environment Five hosts: amongoshard01:10.212.74.43 amongoshard02:10.212.84.4 amongoshard03:10.212.98.23 amongoshard04:10.212.46.5 amongoshard05:10.212.

According to the study of the official documentation, if two copies of data are required in the RS mode, Arbiter must be used, because if there are only two copies, therefore, the MongoDB election policy cannot determine which is primary and which

MongoDB is one of the most widely used NoSQL (not-only SQL) engines in the world, ranking very well above the db, and is the May ranking:　　You can see that the previous four are traditional relational databases, and MongoDB is the first in NoSQL.

Recently MongoDB is frequently shot in the hack news. Many people are more claiming to hate Mongodb,david Mytton on his blog revealing many of the existing problems in MongoDB. But the hated one has the same many preferences, as a comeback: Russell

InstallationFirst, the TAR package to install1. Baidu Network disk http://pan.baidu.com/s/1FOH2m2.https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.0.6.tgzSecond, the Yum source for installationConfigure the Package management system (yum).

MongoDB is the most commonly used NODQL database and has risen to the top six in the database rankings. This article describes how to build a highly available MongoDB (shard + replica) cluster.Before you build a cluster, you need to understand

MongoDB is a popular NoSQL database, it is stored in the form of document-type storage, not key-value. About the characteristics of MongoDB, here is not more introduced, we can go to see the official note: http://docs.mongodb.org/manual/Today, the

The polling node does not contain a copy of the replica set dataset and cannot be promoted to the primary node. There may be multiple voting nodes in the replication set to vote for the main election node. A polling node can be a replica set that