how to backup mongodb

Chinese translation copy set, is actually the Shard backup, prevents the data loss after the Shard hangs. Replication provides redundant backups of data, stores copies of data on multiple servers, improves data availability, and guarantees data security. The Arbiter (arbiter), which is a MongoDB instance in the replication set, does not hold data. The quorum node uses minimal resources and does not require

db.mycol.aggregate ([{$group: {_id: "$by _user", url: {$addToSet: "$url"}}} ])$first gets the header file according to the grouping from the source file. Usually, this makes it only possible to add some previously applied "$sort"-stage db.mycol.aggregate ([{$group: {_id: "$by _user", First_url: {$first: "$url"}}])$last gets the last file from the source file according to the grouping. Typically, this makes it only possible to add some of the previously applied "$sort"-stage. Db.mycol.aggregate

I. What is full backup, differential backup, and Incremental backup? Introduction to Backup Types and combined backup solutionsFull backupBacking up all selected folders does not depend on the file archive attribute to determine which files to back up.(During the

Mongodb advanced 2: mongodb aggregation and mongodb advanced AggregationIn the previous article we talked about mongodb's advanced query: http://blog.csdn.net/stronglyh/article/details/46817789 This article introduces mongodb aggregation. I. mongodb has many aggregation fram

Tags: index XA requires action set x86 read and Write permissions God BPAinstallation :1 Download Linux installation package 2 on the official website in Linux decompression 3 will unzip the directory MV to the specified installation directoryMV mongodb-linux-x86_64-rhel70-3.6. 5//usr/local/mongodb4 CD to the bin directory, execute the following command to add the environment variable:Export path= $PATH:/usr/local/

This article introduces the use of Docker and kubernetes to build a set of MONGODB services with redundant backup sets, from the container to the CI and CD-initiated changes, discussed the container technology to MONGODB challenges and opportunities, and then how to deploy a stable set of MONGODB services , very dry.In

expansion 1. Replication sets guarantee data security 2. Shard Scale Data size MongoDB InstallationBad: 32-bit Linux MongoDB version: 2.6.5 (2: Large version; 6: Odd development version, even stable version; 5: Iteration)1. You can download the appropriate version to GitHub. https://github.com/mongodb/mongo/tree/r2.6.5 (Baidu Network diskLinks:Http://pan.baidu.

. ~ Export MongoDB shell version: 2.4.9connecting to: testWelcome to the MongoDB shell. For interactive help, type "help". For more comprehensive documentation, seehttp: // docs.mongodb.org/Questions? Try the support grouphttp: // groups.google.com/group/mongodb-user# view Command Line help> help db. help () help on db methods db. mycoll. help () help on collecti

Content of this Chapter Consistent and inconsistent RMAN backups Online backups and backup mode Backup Sets Image copies Multiple copies of RMAN backups Control File and server parameter file autobackups Incremental backups Backup retention policies 1. consistent and inconsistent backup of consistent and inco

, "comment": "Root", " Homeaddr ":"/root "," Shell ":"/bin/bash "} {"_id": ObjectId ("5b408bcb7f8c3df38b1fca2f"), "name": "Bin", "Pass": "X", "UID": 1, "GID": 1, "comment": "Bin", "ho Meaddr ":"/bin "," Shell ":"/sbin/nologin "} {"_id": ObjectId ("5b408bcb7f8c3df38b1fca30"), "name": "Daemon", "Pass": "X", "UID": 2, "GID": 2, "comment": "Daemon "," homeaddr ":"/sbin "," Shell ":"/sbin/nologin "} ............................ Data Backup Recovery 7.1 Dat

method, you can import JSON data or export cvs data format. Export Import-h: Specify the IP address of the Database Host-u: Specify the database username-p: Specify the Database Password-d: Specify the database name-c: specify the name of the collection -- type cvs -- headerline (the first row is the column name, no need to import) -- file to import the file The import and export operations are simple. You can use these two commands. 2. data backup

Mysql backup: full backup and incremental backup bitsCN.com Mysql backup: full backup and incremental backup Full Backup: In the "external" directory, enter the mysqldirectory bindire

Partitioning and backup of SQL Server data backup files, SQL Server Data Backup When backing up a complete database, we may sometimes encounter an extreme situation where only 5 GB of space is left for the three drive letters C, D, and E on the server. But what if we need 12 GB of space to completely back up the business database? Is File Group

Basic concept basic features 1 rich data type 2 easy to expand 3 rich features 4 no sacrifice speed 5 Easy management scenario storage model concurrency control memory management disaster recovery 1 Backup 2 Repair MongoDB Transport Protocol MongoDB file internal structure MongoDB data synchronization Fragmentation mec

" as the administrator. Run the following command on the VM: Cd \ Move C: \ mongodb-win32-* C: \ mongodb Others MongoDB is self-contained and runs from any folder you choose without any other system dependencies. You started the investigation analyzer and can install any directory of MongoDB (for example, D: \ test \

Small Drupal database backup, MySQL backup policy sharing for large sites, and drupal Database Backup Simple backup policy for small and medium sites For small and medium-sized websites based on drupal, we can use the backup_migrate module, which provides the regular backup

9-51 shown. Figure 9-51 2. installing MongoDB under Windows After the installation package is downloaded, MongoDB is installed in the directory C:\Program Files\mongodb by default. View the C:\Program Files\mongodb\server\3.0\bin directory, as shown in 9-52. Figure 9-52 The Mongod.exe is used to connect to the MON

[MongoDB] mongodb sharded cluster (iii) on windows platform, mongodb Cluster In the previous two blogs, we elaborated on the working principle and building process of the sharded cluster. In this blog, we will analyze the testing results of the sharded cluster; First, check the status of the sharded cluster. We can see that replica set A and replica Set B are nor

C ++ language centerClick Open Link C ++ driver download Click Open Link Install scons: CD build/sconspython setup. py install Install PCRE and scons [root @:~ /Mongo-cxx-driver-v1.8] # scons after a period of formation, generate lib1_client. So: [root @:~ /Mongo-cxx-driver-v1.8] # lsauthtest clienttest firstexample lib+client. A license.txt sconstruct whereexampleclient config. Log httpclienttest lib+client. So Mongo secondexample Copy to [root @: ~ in/usr/local/lib @:~ /Mongo-cxx-driver-v1

Tags: SSO http csdn BSP Log net sequential ext utilizationA differential backup is a backup of all the differential data that is above a fully-available base point for this period.A log backup is a backup of the transaction log for this period based on the previous fully prepared + log