---
title: "Redis 数据迁移"
date: 2024-01-31T18:09:00+08:00
lastmod: 2024-01-31T18:09:00+08:00
tags: ["redis"]
categories: ["database"]
---

## 环境
- Redis: 5.0.14
- 源集群实例
    ```
    ... 127.0.0.10:6371@16371 ... connected 0-5460
    ... 127.0.0.10:6372@16372 ... connected 5461-10922
    ... 127.0.0.10:6373@16373 ... connected 10923-16383
    ```

- 源集群密码: 123456

- 目的集群实例
    ```
    ... 127.0.0.11:6371@16371 ... connected 0-5460
    ... 127.0.0.11:6372@16372 ... connected 5461-10922
    ... 127.0.0.11:6373@16373 ... connected 10923-16383
    ```

- 目的集群密码: 123456
- redis 数据迁移工具: [redis-dump-go](https://github.com/yannh/redis-dump-go)

## 导出源集群数据
- 下载 redis-dump-go: [https://github.com/yannh/redis-dump-go](https://github.com/yannh/redis-dump-go)
- 导出源集群中每个节点的数据
    ```bash
    REDISDUMPGO_AUTH=123456 redis-dump-go -host 127.0.0.10 -port 6371 > redis-src-6371.resp
    REDISDUMPGO_AUTH=123456 redis-dump-go -host 127.0.0.10 -port 6372 > redis-src-6372.resp
    REDISDUMPGO_AUTH=123456 redis-dump-go -host 127.0.0.10 -port 6373 > redis-src-6373.resp
    ```

## 导入目的集群
- 把数据导入与其 slots 一致的节点中
    ```bash
    redis-cli -c -h 127.0.0.11 -p 6371 -a 123456 --no-auth-warning --pipe < redis-src-6371.resp
    redis-cli -c -h 127.0.0.11 -p 6372 -a 123456 --no-auth-warning --pipe < redis-src-6372.resp
    redis-cli -c -h 127.0.0.11 -p 6373 -a 123456 --no-auth-warning --pipe < redis-src-6373.resp
    ```