Compute
Elastic Cloud Server
Huawei Cloud Flexus
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Cloud Phone Host
Huawei Cloud EulerOS
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
VPC Endpoint
Cloud Connect
Enterprise Router
Enterprise Switch
Global Accelerator
Management & Governance
Cloud Eye
Identity and Access Management
Cloud Trace Service
Resource Formation Service
Tag Management Service
Log Tank Service
Config
OneAccess
Resource Access Manager
Simple Message Notification
Application Performance Management
Application Operations Management
Organizations
Optimization Advisor
IAM Identity Center
Cloud Operations Center
Resource Governance Center
Migration
Server Migration Service
Object Storage Migration Service
Cloud Data Migration
Migration Center
Cloud Ecosystem
KooGallery
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP Filing
Support Plans
My Credentials
Customer Operation Capabilities
Partner Support Plans
Professional Services
Analytics
MapReduce Service
Data Lake Insight
CloudTable Service
Cloud Search Service
Data Lake Visualization
Data Ingestion Service
GaussDB(DWS)
DataArts Studio
Data Lake Factory
DataArts Lake Formation
IoT
IoT Device Access
Others
Product Pricing Details
System Permissions
Console Quick Start
Common FAQs
Instructions for Associating with a HUAWEI CLOUD Partner
Message Center
Security & Compliance
Security Technologies and Applications
Web Application Firewall
Host Security Service
Cloud Firewall
SecMaster
Anti-DDoS Service
Data Encryption Workshop
Database Security Service
Cloud Bastion Host
Data Security Center
Cloud Certificate Manager
Edge Security
Situation Awareness
Managed Threat Detection
Blockchain
Blockchain Service
Web3 Node Engine Service
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
Storage
Object Storage Service
Elastic Volume Service
Cloud Backup and Recovery
Storage Disaster Recovery Service
Scalable File Service Turbo
Scalable File Service
Volume Backup Service
Cloud Server Backup Service
Data Express Service
Dedicated Distributed Storage Service
Containers
Cloud Container Engine
SoftWare Repository for Container
Application Service Mesh
Ubiquitous Cloud Native Service
Cloud Container Instance
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GeminiDB
GaussDB
Distributed Database Middleware
Database and Application Migration UGO
TaurusDB
Middleware
Distributed Cache Service
API Gateway
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
Multi-Site High Availability Service
EventGrid
Dedicated Cloud
Dedicated Computing Cluster
Business Applications
Workspace
ROMA Connect
Message & SMS
Domain Name Service
Edge Data Center Management
Meeting
AI
Face Recognition Service
Graph Engine Service
Content Moderation
Image Recognition
Optical Character Recognition
ModelArts
ImageSearch
Conversational Bot Service
Speech Interaction Service
Huawei HiLens
Video Intelligent Analysis Service
Developer Tools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Content Delivery & Edge Computing
Content Delivery Network
Intelligent EdgeFabric
CloudPond
Intelligent EdgeCloud
Solutions
SAP Cloud
High Performance Computing
Developer Services
ServiceStage
CodeArts
CodeArts PerfTest
CodeArts Req
CodeArts Pipeline
CodeArts Build
CodeArts Deploy
CodeArts Artifact
CodeArts TestPlan
CodeArts Check
CodeArts Repo
Cloud Application Engine
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive
Help Center/ GeminiDB/ GeminiDB Mongo API/ Working with GeminiDB Mongo API/ Migrating Data/ Migrating Data Using mongodump and mongorestore

Migrating Data Using mongodump and mongorestore

Updated on 2023-11-21 GMT+08:00

mongodump and mongorestore are backup and restoration tools provided by the MongoDB client. You can install a MongoDB client on the local device or ECS and use the mongodump and mongorestore tools to migrate your MongoDB databases or other cloud MongoDB databases to GeminiDB Mongo instances.

Precautions

  • mongodump and mongorestore support only full migration. To ensure data consistency, stop services on the source database and stop writing data to the source database before the migration.
  • You are advised to perform the migration during off-peak hours to avoid impacting services.
  • The admin and local system databases cannot be migrated.
  • Make sure that no service set has been created in the system databases admin and local in the source database. If there is already a service set, migrate them out of the system databases admin and local before migration.
  • Before importing data, ensure that the necessary indexes are there on the source database. Delete any unnecessary indexes and create any necessary indexes before migration.
  • If you choose to migrate a sharded cluster, you must create a set of shards in the destination database and configure sharding. In addition, indexes must be created before migration.
  • If the backup using the mongodump tool fails (for example, an error is reported when the backup progress reaches 97%), you are advised to increase the VM storage space and reserve some redundant space before performing the backup again.
  • User rwuser can only operate service database tables. You are advised to specify databases and tables to import and export only service data. Otherwise, the insufficient permission problem may occur during full import and export.

Prerequisites

  1. Prepare an ECS or a device that can access GeminiDB Mongo.
    • To connect to a GeminiDB Mongo instance over a private network from an ECS, create and log in to the ECS. For details, see Purchasing an ECS and Logging In to an ECS
    • To connect to an instance through an EIP, you must:
      1. For details on how to bind an EIP, see Binding and Unbinding an EIP.
      2. Ensure that your local device can access the EIP.
  2. A migration tool has been installed on the prepared ECS or the device that can access GeminiDB Mongo.

    Install the migration tool. For details, see How Can I Install a MongoDB Client?

    NOTE:
    • The mongodump and mongorestore tools are part of the MongoDB client installation package.
    • The MongoDB client version must match the instance version. Otherwise, compatibility issues may occur.

Exporting Data

  1. Log in to the ECS or the device that can access GeminiDB Mongo API.
  2. Back up the source database data using mongodump.

    • Example command for SSL connection:

      ./mongodump --host <DB_HOST> --port <DB_PORT> --authenticationDatabase <AUTH_DB> -u <DB_USER> --ssl --sslCAFile <FILE_PATH> --sslAllowInvalidCertificates --db <DB_NAME> --collection <DB_COLLECTION> --gzip --archive=<Backup_directory>

    • Example command for unencrypted connection:

      ./mongodump --host <DB_HOST> --port <DB_PORT> --authenticationDatabase <AUTH_DB> -u <DB_USER> --db <DB_NAME> --collection <DB_COLLECTION> --gzip --archive=<Backup_directory>

    Table 1 Parameter description

    Parameter

    Description

    DB_HOST

    Database address

    DB_PORT

    Database port

    DB_USER

    Database username

    AUTH_DB

    Database that stores <DB_USER> information. Generally, the value is admin.

    FILE_PATH

    Path for storing the root certificate

    DB_NAME

    The name of the database to be migrated.

    DB_COLLECTION

    Collection in the database to be migrated

    Backup_directory

    Path for storing the exported data. You can customize the path.

    Enter the database administrator password when prompted:

    Enter password:

    Example:

    ./mongodump --host 192.168.xx.xx --port 8635 --authenticationDatabase admin -u rwuser --db test --collection usertable --gzip --archive=/tmp/usertable.tar.gz

Importing Data

  1. Log in to the ECS or the device that can access GeminiDB Mongo.
  2. Upload the data to be imported to the ECS or the device that can access GeminiDB Mongo.

    Select an uploading method based on the OS you are using.

    • In Linux, for example, you can use secure copy protocol (SCP):

      scp -r <IDENTITY_DIR> <REMOTE_USER>@<REMOTE_ADDRESS>:<REMOTE_DIR>

      Table 2 Parameter description

      Parameter

      Description

      <IDENTITY_DIR>

      Directory where the backup folder is located.

      <REMOTE_USER>

      User of the ECS OS

      <REMOTE_ADDRESS>

      ECS address

      <REMOTE_DIR>

      Directory of the file to be imported

    • In Windows, use a transfer tool to upload the backup file to the ECS.

  3. Import the backup data to the GeminiDB Mongo instance.

    • Example command for SSL connection:

      ./mongorestore --host <DB_HOST> --port <DB_PORT> --authenticationDatabase <AUTH_DB> -u <DB_USER> --ssl --sslCAFile <FILE_PATH> --sslAllowInvalidCertificates --db <DB_NAME> --collection <DB_COLLECTION> --gzip --archive=<Backup_directory>

    • Example command for unencrypted connection:

      ./mongorestore --host <DB_HOST> --port <DB_PORT> --authenticationDatabase <AUTH_DB> -u <DB_USER> --db <DB_NAME> --collection <DB_COLLECTION> --gzip --archive=<Backup_directory>

    Table 3 Parameter description

    Parameter

    Description

    DB_HOST

    Database address

    DB_PORT

    Database port

    AUTH_DB

    The database that authenticates DB_USER. Generally, the value is admin.

    DB_USER

    Account name of the database administrator. The default value is rwuser.

    FILE_PATH

    Path for storing the root certificate

    DB_NAME

    Name of the database to which data is to be imported

    DB_COLLECTION

    Collection in the database to be imported

    Backup_directory

    Directory for storing backup files

    Enter the database administrator password when prompted:

    Enter password:

    Example:

    ./mongorestore --host 192.168.xx.xx --port 8635 --authenticationDatabase admin -u rwuser --db test --collection usertable --gzip --archive=/tmp/usertable.tar.gz

Related Issues

When you back up the entire instance using mongodump and mongorestore, the permission verification fails.

  • Cause

    The rwuser user has limited permissions on the admin and config databases of the instance. As a result, the permission verification fails.

  • Solution

    Grant permissions on certain databases and tables to the user.

We use cookies to improve our site and your experience. By continuing to browse our site you accept our cookie policy. Find out more

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback