我正在尝试创建一个简单的Redis高可用性设置,其中包含1个主设备,1个从设备和2个标记。
从redis-master
到redis-slave
故障转移时,该设置可以完美地工作。
redis-master
恢复后,它会正确地将自己注册为新redis-slave
主服务器的从服务器。
但是,当redis-slave
作为主服务器出现故障时,redis-master
无法作为主服务器返回。 redis-master
的日志进入循环,显示:
1:S 12 Dec 11:12:35.073 * MASTER <-> SLAVE sync started
1:S 12 Dec 11:12:35.073 * Non blocking connect for SYNC fired the event.
1:S 12 Dec 11:12:35.074 * Master replied to PING, replication can continue...
1:S 12 Dec 11:12:35.075 * Trying a partial resynchronization (request 684581a36d134a6d50f1cea32820004a5ccf3b2d:285273).
1:S 12 Dec 11:12:35.076 * Master is currently unable to PSYNC but should be in the future: -NOMASTERLINK Can't SYNC while not connected with my master
1:S 12 Dec 11:12:36.081 * Connecting to MASTER 10.102.1.92:6379
1:S 12 Dec 11:12:36.081 * MASTER <-> SLAVE sync started
1:S 12 Dec 11:12:36.082 * Non blocking connect for SYNC fired the event.
1:S 12 Dec 11:12:36.082 * Master replied to PING, replication can continue...
1:S 12 Dec 11:12:36.083 * Trying a partial resynchronization (request 684581a36d134a6d50f1cea32820004a5ccf3b2d:285273).
1:S 12 Dec 11:12:36.084 * Master is currently unable to PSYNC but should be in the future: -NOMASTERLINK Can't SYNC while not connected with my master
1:S 12 Dec 11:12:37.087 * Connecting to MASTER 10.102.1.92:6379
1:S 12 Dec 11:12:37.088 * MASTER <-> SLAVE sync started
...
每个Replication doc都指出:
自Redis 4.0起,实例在升级后升为主节点 故障转移,它将仍然能够执行部分重新同步 与旧主人的奴隶。
但是日志似乎显示为其他。显示第一个redis-master
到redis-slave
故障转移以及随后的redis-slave
到redis-master
日志的更详细的日志版本here可用。
知道发生了什么吗?我该怎么做才能使redis-master
返回主角色?配置详细信息如下:
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
redis-master ClusterIP 10.102.1.92 <none> 6379/TCP 11m
redis-slave ClusterIP 10.107.0.73 <none> 6379/TCP 11m
redis-sentinel ClusterIP 10.110.128.95 <none> 26379/TCP 11m
requirepass test1234
masterauth test1234
dir /data
tcp-keepalive 60
maxmemory-policy noeviction
appendonly no
bind 0.0.0.0
save 900 1
save 300 10
save 60 10000
slave-announce-ip redis-master.fp8-cache
slave-announce-port 6379
requirepass test1234
slaveof redis-master.fp8-cache 6379
masterauth test1234
dir /data
tcp-keepalive 60
maxmemory-policy noeviction
appendonly no
bind 0.0.0.0
save 900 1
save 300 10
save 60 10000
slave-announce-ip redis-slave.fp8-cache
slave-announce-port 6379
答案 0 :(得分:0)
事实证明,问题与主机名而不是IP的使用有关:
slaveof redis-master.fp8-cache 6379
...
slave-announce-ip redis-slave.fp8-cache
因此,当主机作为从机返回时,哨兵显示现在有2个从机:一个具有ip地址,另一个具有主机名。不确定这两个从属条目(指向同一Redis服务器)是如何导致上述问题的。现在,我将配置更改为使用IP地址代替主机名,Redis HA可以正常工作。