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

Self-Hosted Redis Migration with redis-cli (AOF)

Updated on 2024-12-16 GMT+08:00

redis-cli is the command line tool of Redis, which can be used after you install the Redis server. This section describes how to use redis-cli to migrate a data from a self-hosted Redis instance to a DCS instance.

An AOF file can be generated quickly. It applies to scenarios where you can access the Redis server and modify the configurations, such as scenarios with self-built Redis servers.

NOTE:
  • Migrate data during off-peak hours.
  • Before data migration, suspend your services so that data changes newly generated will not be lost during the migration.

Notes and Constraints

To migrate to an instance with SSL enabled, disable the SSL setting first. For details, see Transmitting DCS Redis Data with Encryption Using SSL.

Prerequisites

  • If a target DCS Redis instance is not available, create one first. For details, see Buying a DCS Redis Instance.
  • If you already have a DCS Redis instance, you do not need to create one again. For comparing migration data and reserving sufficient memory, you are advised to clear the instance data before the migration. For details, see Clearing DCS Instance Data. If any data exists on the target instance, duplicate data between the source and target is overwritten. If the data exists only on the target instance, the data will be retained.
  • An Elastic Cloud Server (ECS) has been created. For details about how to create an ECS, see Purchasing a Custom ECS.

Generating an AOF File

  1. Log in to the ECS.
  2. Install redis-cli. The following steps assume that your client is installed on the Linux OS.
    1. Run the following command to download Redis: You can also install other Redis versions. For details, see the Redis official website.
      wget http://download.redis.io/releases/redis-5.0.8.tar.gz
    2. Run the following command to decompress the source code package of your Redis client:
      tar -xzf redis-5.0.8.tar.gz
    3. Run the following commands to go to the Redis directory and compile the source code of your Redis client:
      cd redis-5.0.8
      make
      cd src
  3. Run the following command to enable cache persistence and obtain the AOF persistence file:
    redis-cli -h {source_redis_address} -p {port} -a {password}  config set appendonly yes

    {source_redis_address} is the connection address of the source Redis, {port} is the port of the source Redis, and {password} is the connection password of the source Redis.

    If the size of the AOF file does not change after you have enabled persistence, the AOF file contains full cached data.

    NOTE:
    • To find out the path for storing the AOF file, use redis-cli to access the Redis instance, and run the config get dir command. Unless otherwise specified, the file is named as appendonly.aof by default.
    • To disable synchronization after the AOF file is generated, use redis-cli to log in to the Redis instance and run the config set appendonly no command.

Uploading the AOF file to Huawei Cloud ECS

To save time, you are advised to compress the AOF file and upload it to Huawei Cloud ECS using an appropriate mode (for example, SFTP mode).

NOTE:

Ensure that the ECS has sufficient disk space for data file decompression, and can communicate with the DCS instance. Generally, the ECS and DCS instance are configured to belong to the same VPC and subnet, and the configured security group rules do not restrict access ports. For details about how to configure a security group, see Security Group Configurations.

Importing Data

Log in to the ECS and run the following command to import data.

redis-cli -h {dcs_instance_address} -p {port} -a {password} --pipe < appendonly.aof

{dcs_instance_address} indicates the address of the target Redis instance, {port} indicates the port of the target Redis instance, and {password} indicates the password for connecting to the target Redis instance.

It takes 4 to 10 seconds to import an AOF file of 1 million data (20 bytes per data segment) to a VPC.

NOTICE:

If SSL is enabled, replace the instance address and port number with the actual values.

Verifying the Migration

After the data is imported successfully, access the DCS instance and run the info command to check whether the data has been successfully imported as required. Connect to Redis by referring to redis-cli.

If the import fails, check the procedure. If the import command is incorrect, run the flushall or flushdb command to clear the cache data in the target instance, modify the import command, and try again.

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