JedisConnectionException - 读取超时错误

Question

我正在尝试使用 Spring Data Redis + Jedis 组合连接到 AWS ElastiCache Redis。[Redis 集群已启用，因此它具有集群配置端点，具有 3 个分片 - 每个分片有 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：已启用 / SSL：已启用 / 身份验证：已启用（通过密码）

库 -- Spring-data-redis : 2.1.6.Release / jedis : 2.9.0

Telnet 适用于 AWS Redis 所有节点和 6379 端口上的集群配置端点。

我单独尝试了Redisson，它连接到AWS Redis，没有任何问题。

因此，Redis 本身没有问题，Spring Data Redis 与 Jedis 结合使用会出现问题。

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 - 我的假设是不使用 SSL 连接；

JedisConnectionFactory - afterPropertiesSet() - 尝试创建集群 - 在其下尝试初始化SlotsCache，它向 Redis 服务器发出带有密码的 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 命令来进行身份验证。但我想 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 SSL 连接 - 为什么 Jedis 不使用 SSL 连接？

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。还有其他方法可以做到这一点吗？

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

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

任何帮助将非常感激！

谢谢！

Answer 1

我已经面对这个问题有一段时间了，但是通过以下配置，它可以与启用 SSL 的 AWS ElasticCache - Redis（启用传输中加密和静态加密）完美配合。

下面的 Maven 依赖项用作 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;
    }

}