azure - REDIS Slave无法连接Master

Question

Redis 从站无法连接到 Redis 主站。 我们在 Azure 服务器上安装了 redis。

以下是redis日志，

    Connecting to MASTER MasterIP:6379
 * MASTER <-> SLAVE sync started
 * Non blocking connect for SYNC fired the event.
 * Master replied to PING, replication can continue...
 * Partial resynchronization not possible (no cached master)
 * Master does not support PSYNC or is in error state (reply: -ERR Can't SYNC while not connected with my 
 * Retrying with SYNC...
 # MASTER aborted replication with an error: ERR Can't SYNC while not connected with my master

同时找到master redis连接恰好在slave连接丢失的时间，

* Background saving terminated with success
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
# Connection with slave  IP:6379 lost.
* SLAVE OF **UNKNOWN IP**:8888 enabled (user request)
* Connecting to MASTER **UNKNOW IP**:8888
* MASTER <-> SLAVE sync started
* Non blocking connect for SYNC fired the event.
* Master replied to PING, replication can continue...
# Unable to AUTH to MASTER: -Reading from master: Connection timed out

这里，master会自动尝试连接到一些未知的IP。

如何进一步调试？

Answer 1

# Replication
role:slave
master_host:xxx.xx.xx.xxx
master_port:xxxx
master_link_status:up
master_last_io_seconds_ago:6
master_sync_in_progress:0

1. 使用命令“info”检查redis Slave的复制状态，确保角色为Slave
2. 检查master_link_status是否开启，如果关闭，可能有两个原因:
   (1) 尝试与 MASTER 同步时出现 I/O 错误:连接丢失
   使用 config set client-output-buffer-limit 'slave 512mb 128mb 120' 更改缓冲区限制( client-output-buffer-limit )或更改配置文件
   (2) 无法对 MASTER 进行 AUTH:-ERR 客户端已发送 AUTH，但未设置密码
   如果不正确，请更改密码