JedisConnectionException - 读取超时错误

Posted 2023-03-25

【中文标题】JedisConnectionException - 读取超时错误

【英文标题】：JedisConnectionException - Read timed out error

【发布时间】：2019-09-18 16:39:22

【问题描述】：

我正在尝试使用 Spring Data Redis + Jedis 组合连接到 AWS ElastiCache Redis。 [Redis Cluster 启用，所以它有 Cluster Config 端点，有 3 个 shard - 每个 shard 有 1 个主节点 + 2 个副本节点]

我收到读取超时错误。

Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: Read timed out

AWS Redis 服务器版本：5.0.3 / 集群模式：启用/ SSL：启用/ 身份验证：启用（通过密码）

图书馆 -- Spring-data-redis：2.1.6.Release / 绝地：2.9.0

Telnet 适用于 AWS Redis 所有节点和集群配置端点的 6379 个端口。

我自己尝试了 Redisson，它连接到 AWS Redis，没有任何问题。

所以，Redis 本身没有问题，Spring Data Redis 与 Jedis 结合会出现问题。

我的代码看起来像这样 -

        RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
        redisClusterConfiguration.setClusterNodes(listOfRedisNode);
        redisClusterConfiguration.setPassword(passwordString);


        JedisClientConfiguration.JedisClientConfigurationBuilder jedisClientConfiguration = JedisClientConfiguration.builder();
        jedisClientConfiguration.connectTimeout(Duration.ofSeconds(60));
        jedisClientConfiguration.useSsl();
        jedisClientConfiguration.usePooling();


        JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory(redisClusterConfiguration, jedisClientConfiguration.build() );
        jedisConnectionFactory.afterPropertiesSet();

        final RedisTemplate<String, Serializable> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(jedisConnectionFactory);
        redisTemplate.setKeySerializer(new JdkSerializationRedisSerializer());
        redisTemplate.setValueSerializer(new JdkSerializationRedisSerializer());
        redisTemplate.afterPropertiesSet();

        System.out.println(redisTemplate.getClientList().size());

        StringRedisConnection stringRedisConnectionlettuce = new DefaultStringRedisConnection(redisTemplate.getConnectionFactory().getConnection());
        final String message2 = stringRedisConnectionlettuce.echo("Hello");
        System.out.println("Hello".equals(message2));

读取超时错误 -

Exception in thread "main" java.lang.reflect.InvocationTargetException
    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.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
    at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: Read timed out
    at redis.clients.util.RedisInputStream.ensureFill(RedisInputStream.java:202)
    at redis.clients.util.RedisInputStream.readByte(RedisInputStream.java:40)
    at redis.clients.jedis.Protocol.process(Protocol.java:151)
    at redis.clients.jedis.Protocol.read(Protocol.java:215)
    at redis.clients.jedis.Connection.readProtocolWithCheckingBroken(Connection.java:340)
    at redis.clients.jedis.Connection.getStatusCodeReply(Connection.java:239)
    at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:96)
    at redis.clients.jedis.Connection.sendCommand(Connection.java:126)
    at redis.clients.jedis.Connection.sendCommand(Connection.java:117)
    at redis.clients.jedis.BinaryClient.auth(BinaryClient.java:564)
    at redis.clients.jedis.BinaryJedis.auth(BinaryJedis.java:2138)
    at redis.clients.jedis.JedisClusterConnectionHandler.initializeSlotsCache(JedisClusterConnectionHandler.java:36)
    at redis.clients.jedis.JedisClusterConnectionHandler.<init>(JedisClusterConnectionHandler.java:17)
    at redis.clients.jedis.JedisSlotBasedConnectionHandler.<init>(JedisSlotBasedConnectionHandler.java:24)
    at redis.clients.jedis.BinaryJedisCluster.<init>(BinaryJedisCluster.java:54)
    at redis.clients.jedis.JedisCluster.<init>(JedisCluster.java:93)
    at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.createCluster(JedisConnectionFactory.java:418)
    at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.createCluster(JedisConnectionFactory.java:388)
    at org.springframework.data.redis.connection.jedis.JedisConnectionFactory.afterPropertiesSet(JedisConnectionFactory.java:345)
    at io.github.deepshiv126.springdataredis.example.MySpringBootApplication.main(MySpringBootApplication.java:306)
    ... 8 more
Caused by: java.net.SocketTimeoutException: Read timed out
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
    at java.net.SocketInputStream.read(SocketInputStream.java:171)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at java.net.SocketInputStream.read(SocketInputStream.java:127)
    at redis.clients.util.RedisInputStream.ensureFill(RedisInputStream.java:196)
    ... 27 more

我查看了 Spring 源代码和 Jedis 源代码——我假设它没有使用 SSL 连接；

JedisConnectionFactory - afterPropertiesSet()--尝试创建集群--在此之下它正在尝试初始化SlotsCache，它使用密码向Redis服务器发出AUTH命令--这是发生“读取超时”的地方；

我了解本地 redis - 您可以进入并运行 auth 命令进行身份验证。但我猜 AWS Redis 可能无法做到这一点，它甚至在运行 AUTH 命令之前就需要有 SSL 连接 - 为什么 Jedis 不使用 SSL 连接？

这是另一个线程"Cannot get Jedis connection" when using SSL with Redis and Spring Data Redis 说，使用 JedisPool 之类的东西 - 但 spring-data-redis 的 JedisConnectionFactory 不接受 JedisPool。有没有其他方法可以做到这一点？

JedisPool jedisPool = new JedisPool("rediss://" + clusterConfigEndPoint + ":6379");

另一个问题 - 其他库使用 redis ssl 连接作为rediss:// - Jedis Client 如何使用 SSL 连接，

任何帮助将不胜感激！

谢谢！

【问题讨论】：

更新：我后来发现 Jedis 没有能力支持使用 SSL 连接的集群设置；结果 Spring-Data-Redis 也不支持它。现在，Jedis 和 Spring Data Redis 都支持基于集群的 Redis，带有 SSL。 jira.spring.io/browse/DATAREDIS-974

【参考方案1】：

我面对这个问题已经有一段时间了，但是通过以下配置，它可以完美地与 AWS ElasticCache - 启用 SSL 的 Redis（传输中加密和静态加密）配合使用。

下面的 Maven 依赖被用作 springboot 应用程序的一部分

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <!-- Latest jedis with SSL support -->
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>3.6.0</version>
        </dependency>

@Component
public class RedisConfig 

    @Bean
    public JedisConnectionFactory jedisConnectionFactory() 

        RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
        redisStandaloneConfiguration.setHostName("PrimaryEndpoint of AWS Elastic Cache Cluster");
        redisStandaloneConfiguration.setPort(6379);
        redisStandaloneConfiguration.setUsername("userName");
        
        redisStandaloneConfiguration.setPassword(new String("password").toCharArray());

        JedisClientConfigurationBuilder jedisClientConfiguration = JedisClientConfiguration.builder();
        jedisClientConfiguration.connectTimeout(Duration.ofSeconds(60));// 60s connection timeout
        jedisClientConfiguration.useSsl();
        jedisClientConfiguration.usePooling();

        JedisConnectionFactory jedisConFactory = new JedisConnectionFactory(redisStandaloneConfiguration,
                jedisClientConfiguration.build());
        jedisConFactory.afterPropertiesSet();

        return jedisConFactory;
    

    @Bean(value = "redisTemplate")
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) 
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        return redisTemplate;