无法将 SpringBoot 连接到 docker 上的 redis-cluster

Question

我想在 docker 上做本地 redis-cluster。

• 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。
• 我做了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

他们工作得很好！

$> 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
• 这里有一些代码

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

无法检索集群信息。集群节点返回错误。 - 172.18.1.1:6379 失败：Could not get a resource from the pool * '172.18.1.1' 是 docker 主机 IP。 * '127.0.0.1:36379' 是我放入 application.properties 文件的值。

它正在 docker 上运行

• 但是！！！如果我把 SpringBoot 构建的结果放在一个通过 mynet 连接的 docker 中，它就可以工作了！！
• 构建项目 > 在另一个 docker 中复制战争 > 运行战争。它的工作！很好。
• • 我认为 redis-cluster 不允许代理通过什么的...
• 有人知道如何在本地 docker 中制作本地 redis-cluster 吗？

Answer 1

问题在于，在 Redis Cluster 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“集群节点”请求发送到配置的节点之一（127.0.0.1:36379,127.0.0.1:36380,127.0.0.1:36381）。

作为响应，它会接收所有 Redis 节点的 URL，在您的情况下为 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，因此您会收到连接失败错误。

您想要的是将每个 Redis 节点配置为具有不同的“广告”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：

cluster-announce-ip: The IP address to announce.
cluster-announce-port: The data port to announce.
cluster-announce-bus-port: The cluster bus port to announce.

请参阅此博客文章，了解更多详细信息：https://get-reddie.com/blog/redis4-cluster-docker-compose/