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content/post/redis-dump-data.md

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+---
+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
+    ```
+