问题描述

通过docker搭建Redis集群 springBoot项目，在配置好通过docker部署的Redis集群后，启动报错：

配置信息如下

报错信息如下

Unable to connect to 172.26.54.14:7005
java.util.concurrent.CompletionException: io.netty.channel.ConnectTimeoutException: connection timed out: /172.26.54.14:7005
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:331) ~[na:na]
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:346) ~[na:na]
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:632) ~[na:na]
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506) ~[na:na]
	at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2088) ~[na:na]
	at io.lettuce.core.AbstractRedisClient.lambda$initializeChannelAsync0$4(AbstractRedisClient.java:330) ~[lettuce-core-5.1.6.RELEASE.jar:na]
	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:502) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:495) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:474) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:415) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:540) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:533) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:114) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:269) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.PromiseTask$RunnableAdapter.call(PromiseTask.java:38) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.ScheduledFutureTask.run(ScheduledFutureTask.java:127) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute$$$capture(AbstractEventExecutor.java:163) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:495) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
	at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]
Caused by: io.netty.channel.ConnectTimeoutException: connection timed out: /172.26.54.14:7005
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:267) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
	... 9 common frames omitted

问题原因

因为docker默认采用的桥接方式，桥接到docker0虚拟网卡，它就是172的,通过查看集群节点配置文件vi /var/local/redis/r4/data/nodes.conf。可以发现 :

这时候，只要修改六个节点的配置文件，把所有的内网IP都改为当前公网IP，修改好后，重启集群节点即可，这时候再重启项目，就不会报错了