redis network_error ai_generated true

SENTINEL：仲裁节点不可达，故障转移延迟

SENTINEL: arbiter node unreachable, failover delayed

ID: redis/sentinel-arbiter-unreachable

其他格式: JSON · Markdown 中文 · English
88%修复率
87%置信度
1证据数
2024-06-01首次发现

版本兼容性

版本状态引入弃用备注
Redis 6.2 active — — —
Redis 7.0 active — — —
Redis 7.2 active — — —

根因分析

Sentinel 实例无法与仲裁节点通信，而仲裁节点对于故障转移决策中达成法定人数至关重要。

English

The Sentinel instance cannot communicate with the arbiter node, which is crucial for achieving quorum in failover decisions.

generic

官方文档

https://redis.io/docs/latest/operate/oss_and_stack/management/sentinel/

解决方案

  1. 检查与仲裁节点的网络连接：ping <arbiter-ip> 并确保防火墙规则允许 Sentinel 流量（端口 26379）。
  2. 在受影响的节点上重启 Sentinel 服务：systemctl restart sentinel（或 redis-sentinel restart）。

无效尝试

常见但无效的做法:

  1. Increase sentinel monitor quorum to 3 to tolerate more failures 40% 失败

    Does not fix the network issue; may delay failover further if more nodes are unreachable.

  2. Remove the arbiter node from the Sentinel configuration 50% 失败

    Reduces redundancy; if other nodes fail, quorum may not be reached, causing no failover.