mongodb migrate data

192.168.111.12 and 192.168.111.13 are Replica Sets.Configsever occupies 192.168.111.11, 192.168.111.12, and 192.168.111.13.3. One routing node Mongos runs on 192.168.111.14. Sharding A is composed of 192.168.111.11: 10000 192.168.111.12: 10001 192.168.111.13: 10002.Sharding B is composed of 192.168.111.11: 20000 192.168.111.12: 20001 192.168.111.13: 20002Sharding C is composed of 192.168.111.11: 30000 192.168.111.12: 30001 192.168.111.13: 30002Configsever: 192.168.111.11: 40000 192.168.111.12:

Label:#-*-Coding:utf-8-*-Import PyodbcImport OSImport CSVImport PymongoFrom Pymongo import Ascending, descendingFrom Pymongo import mongoclientImport Binascii "Connect to MongoDB database"Client = mongoclient (' 10.20.4.79 ', 27017)#client = mongoclient (' 10.20.66.106 ', 27017)db_name = ' Softadoutput 'db = Client[db_name] ' connection to SQL Server database ' ' ConnStr = ' driver={sql Server Native Client 11.0}; Server=desktop-44p34l6;database=s

Flume Learning application: Write log data to MongoDB and flumemongodb in JavaOverview Windows: Java writes logs to Flume, and Flume writes the logs to MongoDB. System Environment Operating System: win7 64 JDK: 1.6.0 _ 43 Download Resources Maven: 3.3.3Download, install, and get started: 1. Maven-start and 2. Create a simple Maven Project Flume: 1.6.0Downl

Label:Model Data for Atomic Operations PatternIn MongoDB, write operations, eg. Db.collection.update (), Db.collection.findAndModify (), Db.collection.remove (), is atomic on the level of a single docume Nt. For fields The must is updated together, embedding the fields within the same document ensures that the fields can be UPDA Te atomically. For example, consider the situation where you need to maintain t

Label:At the outset, to save the server, MongoDB and Redis are placed on a server. Every peak of the website special card, also often appear 502. Find the reason, found that hard disk writing data is very large, IOPS is very high, and then carefully study the monitoring, found that the operation of hard disk is very regular, every few minutes there is a frequent write hard disk, Lenovo to the Redis synchron

At the beginning, Mongodb and Redis were put on one server to save servers. Every peak period of a website is particularly slow, and 502 is frequently used. After looking for a long time, I found that the hard disk has a large write data and high IOPS, and I have not found many reasons for troubleshooting. Then I carefully studied the monitoring and found that the operation on the hard disk was regular. I w

Tags: blog http com usage Data 2014New actionThe Insert function adds a document to the collection. For example, we want to register a person's information, first we create a local variable in the shell force person, which records the name and gender of people, we want to set persons by Db.persons.insert to insert a record, Query the record you just inserted by Db.persons.findOne ().Figure 7. New operationThere are several points to note when insertin

Tags: CTO technology doc console div option UNC http share pictureQuerying data in the MongoDB database (top)In the MongoDB database, you can use the Find method of the collection object to query multiple data documents from a collection, using the Find method as follows:Collection.find (selector, [options]);The select

MongoDB is a distributed file storage-based database. Written in C ++. It is designed to provide scalable, high-performance data storage solutions for WEB applications. MongoDB is a distributed file storage-based database. Written in C ++. It is designed to provide scalable, high-performance data storage solutions for

Previously said to the database connection operation, please refer to: MongoDB Add user and permissions set detailedOperations on the database: Please refer to: MongoDB database operation-Create, switch, deleteLet's say that the insert operation of the database table1, the insert operation under the command line > Use test; #切换到test数据库 switched to DB Test > document= ({"title": "Linux Command

Tags: CEP post cal context row modify data ArrayList URL divProblem Description: We all know that data that involves money must be stored using the BigDecimal type, and there is still a precision problem with querying MONGO today, although I used the big decimal type in my code, but I used the double type in MONGO. My initial inference was that Mongotemplate had a problem with the type conversion, or becaus

Mongodb entry-4 Data Type-the date and array date are different when you create a date in mongodb. The Date type created using Date () in mongodb is a string type, which contains time zone and other data. NewDate () is a date object of the ISODate type. Same

Common operations for MongoDBSee the Manual, PHP official http://us2.php.net/manual/en/mongo.manual.phpYou can also see the official MongoDB tutorialDatabase connection⑴ default Format$m = new Mongo ();This is the default connection to the local 27017 port, of course you can also connect the remote host such as 192.168.0.4:27017, if the port is 27017, the port can be omitted⑵ Standard Connection$m = new Mongo ("Mo