JedisConnectionException - 讀取超時錯誤

Question

我正在嘗試使用 Spring Data Redis + Jedis 組合連接到 AWS ElastiCache Redis。 [Redis 集群啟用，所以它有集群配置端點，有 3 個分片 - 每個分片有 1 個主節點 + 2 個副本節點]

我收到讀取超時錯誤。

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

AWS Redis 服務器版本：5.0.3/集群模式：啟用/SSL：啟用/身份驗證：啟用（通過密碼）

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

Telnet 在 6379 個端口上適用於 AWS Redis 所有節點和集群配置端點。

我自己嘗試了 Redisson，它可以連接到 AWS Redis，沒有任何問題。

所以，Redis 本身沒有問題，Spring Data Redis 與 Jedis 結合的問題。

我的代碼看起來像這樣 -

        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));

讀取超時錯誤 -

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 源代碼和 Jedis 源代碼——我假設它不使用 SSL 連接；

JedisConnectionFactory - afterPropertiesSet()-- 嘗試創建集群 - 在此情況下，它正在嘗試使用密碼向 Redis 服務器發出 AUTH 命令的 initializeSlotsCache - 這就是發生“讀取超時”的地方；

我了解本地 redis - 您可以進入並運行 auth 命令以進行身份​​驗證。 但我猜 AWS Redis 可能無法做到這一點，它甚至在運行 AUTH 命令之前就需要有 SSL 連接 - 為什么 Jedis 不使用 SSL 連接？

當將 SSL 與 Redis 和 Spring Data Redis 一起使用時，另一個線程“無法獲得 Jedis 連接”說，使用類似 JedisPool 的東西 - 但 spring-data-redis 的 JedisConnectionFactory 不接受 JedisPool。 有沒有其他方法可以做到這一點？

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

另一個問題 - 其他庫使用 redis ssl 連接作為rediss:// - 如何讓 Jedis Client 使用 SSL 連接，

任何幫助將不勝感激！

謝謝！

Answer 1

我面對這個問題已經有一段時間了，但是通過以下配置，它可以與 AWS ElasticCache 完美配合 - Redis 啟用 SSL（傳輸中加密和靜態加密啟用）。

以下 Maven 依賴項用作 springboot 應用程序的一部分

        <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;
    }

}