无法将SpringBoot连接到docker上的redis-cluster

Question

我想在docker上创建本地redis集群。

• 我尝试在本地docker上制作redis-cluster。
• 我有3个码头工人。
  1. docker redis：5.0.1-alpine 172.18.1.1
  2. docker redis：5.0.1-alpine 172.18.1.2
  3. docker redis：5.0.1-alpine 172.18.1.3
• 它们通过mynet网络连接。
• 我制作了redis集群。

docker 172.18.1.1 $> redis-cli --cluster create --cluster-replicas 0 172.18.1.1:6379 172.18.1.2:6379 172.18.1.3:6379

效果很好！

$> redis-cli -c
127.0.0.1:6379> set hello redis 
OK
127.0.0.1:6379> get hello 
"redis"
127.0.0.1:6379> 

问题是无法从Spring Boot Application连接到redis-cluster。

• Springboot版本：1.5.7.RELEASE
• REDIS LIB版本：redis.clients：jedis：2.9.0
• 这是一些代码

spring.redis.cluster.nodes=127.0.0.1:36379,127.0.0.1:36380,127.0.0.1:36381
spring.redis.cluster.max-redirects=6

@Component
@ConfigurationProperties(prefix = "spring.redis.cluster")
public class RedisClusterConfigurationProperties {
    List<String> nodes;

    public List<String> getNodes() {
        return nodes;
    }

    public void setNodes(List<String> nodes) {
        this.nodes = nodes;
    }
}


@Configuration
@Service
public class SomesService {
    @Autowired
    private RedisClusterConfigurationProperties clusterProperties;

    @Bean
    public JedisPoolConfig jedisPoolConfig() {
        final JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();

        return jedisPoolConfig;
    }

    @Bean(name = "redisTemplate")
    public RedisTemplate redisTemplate() {
        RedisTemplate redisTemplate = new RedisTemplate();
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new StringRedisSerializer());

        redisTemplate.setConnectionFactory(connectionFactory());
        redisTemplate.setExposeConnection(true);
        return redisTemplate;
    }

    private RedisConnectionFactory connectionFactory() {

        final RedisClusterConfiguration clusterConfig = new RedisClusterConfiguration(clusterProperties.getNodes());
        final JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory(
            clusterConfig, jedisPoolConfig());
        jedisConnectionFactory.setUsePool(true);
        return jedisConnectionFactory;
    }

}

结果

org.springframework.data.redis.ClusterStateFailureException: Could not retrieve cluster information. CLUSTER NODES returned with error.
    - 172.18.1.1:6379 failed: Could not get a resource from the pool
    - 172.18.1.2:6379 failed: Could not get a resource from the pool
    - 172.18.1.3:6379 failed: Could not get a resource from the pool

    at org.springframework.data.redis.connection.jedis.JedisClusterConnection$JedisClusterTopologyProvider.getTopology(JedisClusterConnection.java:4237)
    at org.springframework.data.redis.connection.ClusterCommandExecutor.getClusterTopology(ClusterCommandExecutor.java:349)
    at org.springframework.data.redis.connection.ClusterCommandExecutor.executeCommandOnAllNodes(ClusterCommandExecutor.java:188)
    at org.springframework.data.redis.connection.jedis.JedisClusterConnection.info(JedisClusterConnection.java:3128)
--- removed my package sorry ;-)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
--- removed my package sorry ;-)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

2019-07-23 15:48:01.579  INFO 13741 --- [       Thread-5] o.s.w.c.s.GenericWebApplicationContext   : Closing org.springframework.web.context.support.GenericWebApplicationContext@305ffe9e: startup date [Tue Jul 23 15:47:42 KST 2019]; root of context hierarchy
2019:07:23 15:48:01.579 INFO  --- [Thread-5] o.s.w.c.s.GenericWebApplicationContext : - 984 Closing org.springframework.web.context.support.GenericWebApplicationContext@305ffe9e: startup date [Tue Jul 23 15:47:42 KST 2019]; root of context hierarchy

Process finished with exit code 255

• 错误消息

无法检索群集信息。 CLUSTER NODES返回错误。 -172.18.1.1:6379失败：Could not get a resource from the pool *'172.18.1.1'是docker host ip。 *'127.0.0.1:36379'是我放在application.properties文件中的值。

正在docker上运行

• 但是！！！如果我对通过mynet连接的docker中的SpringBoot构建结果发动了战争，那么它就起作用了！
• 构建项目>将战争复制到另一个docker>运行战争。工作正常！很好。
• • 我认为redis-cluster不允许代理通过或其他方式...
• 有人知道如何在本地docker中制作本地redis集群吗？

Answer 1

问题在于，在Redis群集中，客户端从Redis节点本身获取所有Redis节点的URL。

因此，在您的情况下，Spring Boot应用程序将“群集节点”请求发送到已配置的节点之一（127.0.0.1:36379,127.0.0.1:36380,127.0.0.1:36381）。

作为响应，它接收所有Redis节点的URL，在您的情况下，它接收172.18.1.1:6379 172.18.1.2:6379 172.18.1.3:6379并尝试与它们通信。 由于这是内部Docker网络，因此会出现连接失败错误。

您想要的是将每个Redis节点配置为具有不同的“播发”主机和端口。 这样，客户端将收到他们可以访问的URL，而不是内部主机和端口。

这是您应该添加的配置参数：

guard let window = self.validWindow() else { return }
decreaseAlpha(window)

请参阅此博客文章，以对此进行更详细的说明：https://get-reddie.com/blog/redis4-cluster-docker-compose/