mongo cam

starting data synchronization. If the property is modified, use Rs.reconfig (); 3.3 The deployment policy replica set contains a maximum of 12 nodes, and the minimum replica collection configuration that provides automatic failover is in the previous example. Consists of two replicas and one quorum node. In a production environment, the arbiter node can run on the application server, while the replica runs on its own machine. For most environments, this configuration of the economy and univers

Label: NoSQL's use of human data in a very short time is high, not only as a new storage idea, but also because it is more efficient at manipulating big data than the relational databaseTools/Materials A CentOS computer connected to the Internet Download the installation file Download the installation filewget https://fastdl.mongodb.org/linux/mongodb-linux-i686-2.6.7.tgz?_ga=1.68265944.858401362.1421216907 View downloaded compressed filesEND Unzip the file

': ' Starlee '}, {$inc: {' Age ': 3}})Mysql:SELECT COUNT (*) from user WHERE ' name ' = ' Starlee 'Mongo:Db.user.find ({' name ': ' Starlee '}). Count ()Mysql:SELECT * from user limit 10,20Mongo:Db.user.find (). Skip. Limit (20)Mysql:SELECT * from user WHERE ' age ' in (25, 35,45)Mongo:Db.user.find ({' age ': {$in: [25, 35, 45]}})Mysql:SELECT * from user ORDER by age DESCMongo:Db.user.find (). Sort ({' Age ':-1})Mysql:SELECT DISTINCT (name) from user WHERE age > 20Mongo:Db.user.distinct (' name

"-- Logappendmongod.exe --replset rs1--keyfile "D:\Program files\mongodb\data\replica\key\r1"--port 28011--dbpath " D:\Program files\mongodb\data\replica\data\r1 "--logpath" D:\Program files\mongodb\data\replica\log\r1.log "-- logappendcd/d D:\Program files\mongodb\binmongod.exe --replset rs1--keyfile "D:\Program files\mongodb\data\ Replica\key\r2 "--port 28012--dbpath" D:\Program files\mongodb\data\replica\data\r2 "--logpath" D:\Program Files\ Mongodb\data\replica\log\r2.log "--logappendThir

directory(1) Manually unzip the file, unzip it as shown below:(2) Create a table of contents (see the instructions above) /usr/local/mongodb /usr/local/mongodb/data/ /usr/local/mongodb/log/ After the above is established, create a log file in the log folder both: Mongodb.log Configure MongoDB --Enter the MongoDB command line# cd/usr/local/mongodb/bin/#./mongod--dbpath=/usr/local/mongodb/data/--logpath=/usr/local/mongodb/log/mongo.log(./mongod--db

rs1--keyfile "D:\Program files\mongodb\data\replica\key\r1"--port 28011-- DBPath "D:\Program files\mongodb\data\replica\data\r1"--logpath "D:\Program files\mongodb\data\replica\log\r1.log" --logappend cd/d D:\Program files\mongodb\bin mongod.exe --replset rs1--keyfile "D:\Program files\ Mongodb\data\replica\key\r2 "--port 28012--dbpath" D:\Program files\mongodb\data\replica\data\r2 "--logpath" D:\ Program Files\mongodb\data\replica\log\r2.log "--logappend Third, login client, initialize r

Two forms of MONGO are analyzed: 1. Mongo sharding Way: 1.1. Problems with deep ploughing pagesExample: When the MONGO Shard is 5, paging query (if the creation time flashbacks query) the first page, 50 data per page, then MONGO sharding 50 data on each shard, a total of 505 data, and then summarized, calculated the f

Label:The production environment uses the MONGO database. Long-coveted for the MONGO database, its high performance/open source/modeless/document-based database/... What a tempting feature, also occasionally tossing and playing, but did not make notes, take advantage of this opportunity to pick up again.About MONGO MongoDB is a Open-source document datab

Tags:. JSON hang body export style bin management conf blankInstallation steps under CentOS via Yum are as follows: statement: Compared to those with the source code installed, less configuration and new log and data directory, this simple and rude, 1 , create a warehouse file, vi /etc/yum.repos.d/ Mongodb-org-3.4 .repo 2 , copy the following configuration, save exit [MongoDB -org-3.4 "name =mongodb Repository baseurl = Https:// repo.mongodb.org/yum/redhat/$ releasever/mongodb-org/3.4/x

directly ... May be I find the Help class has a problem, anyway, has not found a way to update directly. Because of this problem, and the Redis itself cannot be indexed, the company decided to get a MongoDB server (16G). Next said is the company's other needs, is the app to integrate the IM function, QQ chat is the kind, there is a problem, push the problem, this is too complex, so we decided to use a third party, I do not say the name, lest there is a suspicion of advertising. However, another

because it is not currently master.Helpless, can only find another way, because the MONGO data is not too familiar.Later read the article on the Internet: https://segmentfault.com/q/1010000000532867 is also about this problem.Probably think of the solution: Turn off this MONGO service, remove the local configuration directory from this instance, restart it, and then configure it with the Rs.initiate (CFG)

Tags: NTA DDR detail replica set security one record lock AssociationThis series wants to share with you the following chapters (I will continue to update the (^ω^)): 1. One of the MONGO 3.4 Shard Cluster Series: A brief discussion on shard cluster 2, MONGO 3.4 Shard Cluster Series two: Building a shard cluster--Hash shard 3, MONGO 3.4 Shard Cluster Series three:

Tags: ruby operation MongoDBRecent knowledge of MongoDB has involved using Ruby to manipulate the MongoDB database, because the reference data used in Ruby MONGO driver version is not 2.3.3, so in terms of operation will be different, so wrote this Ruby2.3.3 operation MongoDB get started, learning method is reference URL https://docs.mongodb.com/ruby-driver/v2.3/quick-start/Fast learning is mainly divided into the following sections: Advance

Tags: des http java os using IO strong file forIn the real world, everything has two sides, in the process of the world, and so on! Whether we are in the use of a new language, or a new technology, in the understanding of how exciting it is, make people relaxed, all of the excellent as for, it is necessary to understand some of his limitations, it is convenient for you in the actual development process encountered these when you understand how to deal with these areas, when it comes to these pla

Tags: app docker node database master-slave read config Isod how to PrimaryFirst, the specific operation method1. Start two MONGO containersDocker run--name mongo1-p 21117:27017-d MONGO--noprealloc--smallfiles--replset rs1docker run--name mongo2-p 22117: 27017-d MONGO--noprealloc--smallfiles--replset rs12. Viewing a running containerDocker PS | grep MONGO3. View

Label:1. Add Yum Source vi /etc/yum. repos.d/10gen.repo [10gen] name=10gen Repository BaseURL =http:// gpgcheck=0 : Wq 2. Installation Yum Install mongo-10gen-server yuminstall Mongo-10gen 3, Installation Php-mongo wget http://pecl.php.net/get/mongo-1.2.2.tgz tar zxf mongo