NOAUTH Authentication required

[An0nymous0]

Bug Report

Current Behavior

Connect to the low version of redis, prompt NOAUTH Authentication required.

Stack trace

Caused by: io.lettuce.core.RedisCommandExecutionException: NOAUTH Authentication required. at io.lettuce.core.internal.ExceptionFactory.createExecutionException(ExceptionFactory.java:137) ~[lettuce-core-6.0.0.RELEASE.jar:6.0.0.RELEASE] at io.lettuce.core.internal.ExceptionFactory.createExecutionException(ExceptionFactory.java:110) ~[lettuce-core-6.0.0.RELEASE.jar:6.0.0.RELEASE] at io.lettuce.core.protocol.AsyncCommand.completeResult(AsyncCommand.java:120) ~[lettuce-core-6.0.0.RELEASE.jar:6.0.0.RELEASE] at io.lettuce.core.protocol.AsyncCommand.complete(AsyncCommand.java:111) ~[lettuce-core-6.0.0.RELEASE.jar:6.0.0.RELEASE] at io.lettuce.core.protocol.CommandWrapper.complete(CommandWrapper.java:59) ~[lettuce-core-6.0.0.RELEASE.jar:6.0.0.RELEASE] at io.lettuce.core.protocol.CommandHandler.complete(CommandHandler.java:704) ~[lettuce-core-6.0.0.RELEASE.jar:6.0.0.RELEASE] at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:639) ~[lettuce-core-6.0.0.RELEASE.jar:6.0.0.RELEASE] at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:560) ~[lettuce-core-6.0.0.RELEASE.jar:6.0.0.RELEASE] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) ~[netty-transport-4.1.54.Final.jar:4.1.54.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) ~[netty-common-4.1.54.Final.jar:4.1.54.Final] at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.54.Final.jar:4.1.54.Final] at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.54.Final.jar:4.1.54.Final] ... 1 common frames omitted

RedisClient client = RedisClient.create(RedisURI.builder()
                .withHost("172.18.150.9")
                .withPort(6379)
                .withPassword("laosiji123".toCharArray())
                .build());
StatefulRedisConnection<String, String> connection = client.connect();
RedisStringCommands sync = connection.sync();
String value = sync.get("test").toString();

Input Code

Input Code

        RedisClient client = RedisClient.create(RedisURI.builder()
                .withHost("172.18.1.1")
                .withPort(6379)
                .withPassword("laosiji".toCharArray())
                .build());
        StatefulRedisConnection<String, String> connection = client.connect();
        RedisStringCommands sync = connection.sync();
        String value = sync.get("test").toString();

Expected behavior/code

Environment

• Lettuce version(s): [e.g. 6.0.1.RELEASE]
• Redis version: [e.g. 4.1.1]

Possible Solution

Additional context

[mp911de]

If you would like us to spend some time helping you to diagnose the problem, please spend some time describing it and, ideally, providing a minimal sample that reproduces the problem.

Attaching the debug log is also a good option.

[An0nymous0]

@mp911de
HELLO
The packet capture found that lettuce 6.x uses the RESP3 protocol to request the cloud server redis service 4.x by default, which resulted in unsupported. But I verified that the official redis4.0.11 is supported. Because what the cloud server returns is not that the RESP3 protocol does not support but the verification failed.

I solved it by manually specifying RESP2

RedisClient redisClient = RedisClient.create(RedisURI.Builder.redis("x.x.x.x", 6379).withPassword("laosiji123".toCharArray()).withDatabase(6).build());
redisClient.setOptions(ClientOptions.builder().protocolVersion(ProtocolVersion.RESP2).build());

lettuce 5.x -> cloud server redis

lettuce 6.x 0> cloud server redis

Official redis

[mp911de]

Thanks for the report. Lettuce 6 tries to auto-discover the protocol. If Redis responds with -ERR, then we fall back to RESP2. -NOAUTH on HELLO is considered an unknown scenario so we can't figure out what to do.

[Anricx]

Here is the best practice with spring boot

package com.chinaroad.parking.config;

import io.lettuce.core.ClientOptions;
import io.lettuce.core.protocol.ProtocolVersion;
import org.springframework.boot.autoconfigure.data.redis.LettuceClientConfigurationBuilderCustomizer;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration;

@Configuration
public class SpringConfig implements LettuceClientConfigurationBuilderCustomizer {

    @Override
    public void customize(LettuceClientConfiguration.LettuceClientConfigurationBuilder clientConfigurationBuilder) {
        // manually specifying RESP2 
        clientConfigurationBuilder.clientOptions(ClientOptions.builder()
                .protocolVersion(ProtocolVersion.RESP2)
                .build());
    }

}