驱动故障

基本信息：

• 业务: 福建农信风控系统

• 操作系统: 鲲鹏v10 内核4.19.90

• 资源配置: 8C16G

• redis版本: redis: 7.0.9

• redis架构:集群模式 4分片一主一从

• redis驱动: redisson 3.16.8

• 节点信息

  172.13.104.1:60145 0- 4095  keys 3211
  172.13.104.18:60145
  
  172.13.104.2:60145 4096-8191 keys 3244
  172.13.104.19:60145
  
  172.13.104.3:60145 8192-12287 keys 3252  *
  172.13.104.20:60145
  
  172.13.104.4:60145 12288-16383 keys 3251
  172.13.104.5:60145
  

• redis配置

  daemonize yes
  save ""
  port 60145
  cluster-port 60146
  cluster-enabled yes
  cluster-config-file nodes.conf
  cluster-node-timeout 5000
  appendonly yes
  auto-aof-rewrite-percentage 100
  auto-aof-rewrite-min-size 64mb
  no-appendfsync-on-rewrite yes
  pidfile ./redis_60145.pid
  logfile "./redis.log"
  syslog-enabled yes
  #bind 192.13.64.13
  dir ./
  masterauth xxxx
  requlrepass xxxx
  protected-mode no
  ignore-warnings ARM64-COW-BUG
  

故障描述:
应用端的日志提示：org.redisson.client.RedisConnectionException: SlaveConnectionPool no available Redis entries. Master entry host

https://github.com/redisson/redisson/issues/2881

https://github.com/redisson/redisson/issues/3983

问题恢复：

应用服务重启后解决，根因不明。

可能是驱动bug，根据修复日志看该故障有多重原因造成，以下是redission 客户端修复记录：

### 05-Aug-2020 - 3.13.3 released
Fixed - "SlaveConnectionPool no available Redis entries" error is thrown after failover

### 20-Mar-2022 - 3.17.0 released
Fixed - SlaveConnectionPool no available Redis entries error occurs in Cluster mode  

### 24-Aug-2022 - 3.17.6 released
Fixed - "SlaveConnectionPool no available Redis entries" error occurs in Cluster caused by early excluding of master node from nodes for reading 

### 28-Jul-2023 - 3.23.2 released
Fixed - `SlaveConnectionPool no available Redis entries` error may arise in some cases