Redis通过Docker部署后启动失败且无法正常重启求助

问题现象 #

在Traefik管理的服务器上通过Docker部署Redis，容器启动后始终失败，仅能通过删除/data/dump.rdb文件后重启容器恢复正常。

错误日志 #

* Connecting to MASTER 19XXXXXXXXX
 * MASTER <-> REPLICA sync started
 * Non blocking connect for SYNC fired the event.
 * Master replied to PING, replication can continue...
 * Partial resynchronization not possible (no cached master)
 * Full resync from master: ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ:1
 * MASTER <-> REPLICA sync: receiving 54992 bytes from master to disk
 * MASTER <-> REPLICA sync: Flushing old data
 * MASTER <-> REPLICA sync: Loading DB in memory
 # Wrong signature trying to load DB from file
 # Failed trying to load the MASTER synchronization DB from disk: Invalid argument
 * Reconnecting to MASTER 19XXXXXXXXX after failure
 * MASTER <-> REPLICA sync started
 * Non blocking connect for SYNC fired the event.
 # Failed to read response from the server: Connection reset by peer
 # Master did not respond to command during SYNC handshake
 * Connecting to MASTER 19XXXXXXXXX
 * MASTER <-> REPLICA sync started
 * Non blocking connect for SYNC fired the event.

Docker Compose配置 #

version: '3'

services:
  redis:
    image: "redis:7.0"
    container_name: "redis"
    command: "redis-server"
    networks:
      - "traefik"
    restart: "always"
    ports:
      - '6379:6379'
    volumes:
      - "/root/redis/data:/data"
    labels:
      - "traefik.enable=true"
      - "com.centurylinklabs.watchtower.enable=false"

问题分析与解决建议 #

• 核心问题：从节点同步主节点数据时，接收的RDB文件签名错误，无法加载，导致容器进入失败重连循环。
• 可能原因：
  • 主节点的dump.rdb文件本身损坏，同步到从节点后无法解析
  • 主从节点Redis版本不兼容（从节点为7.0，主节点版本可能存在格式差异）
  • 网络传输过程中RDB文件出现丢包或篡改
• 解决步骤：
  1. 核对主节点Redis版本，确保与从节点（7.0）一致或版本兼容，不同大版本的RDB格式可能不互通
  2. 在主节点手动备份dump.rdb后，执行BGSAVE命令重新生成干净的RDB文件，再重启从节点尝试同步
  3. 临时将从节点的restart: always改为restart: no，避免循环启动浪费资源，排查完成后再改回
  4. 若主节点RDB文件确已损坏，可先删除主节点的dump.rdb并重启主节点，待主节点正常运行后再让从节点同步

内容的提问来源于stack exchange，提问作者garrym