Get errors connecting redis inside docker

Question

I have a Spring Boot API Gateway service and a Redis service running under the same network in Docker. I plan to connect the API Gateway to Redis, but I encountered an error:

"Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.redisson.api.RedissonClient]: Factory method 'redissionClient' threw an exception with the message: Unable to connect to the Redis server: 127.0.0.1/127.0.0.1:6379."

If I run the API Gateway from my local machine, I am able to connect to the Redis service running in Docker.

24 connections initialized for 127.0.0.1/127.0.0.1:6379

Here is my Redis configuration:

@Configuration
public class RedisConfig {

    @Bean
    public RedissonClient redissionClient() {
        Config config = new Config();
        config.useSingleServer().setAddress("redis://127.0.0.1:6379");
        return Redisson.create(config);
    }
}

I also edit etc/host added redis

127.0.0.1 api-gateway db redis

trying to connect api-gateway to redis when api-gateway run inside docker

Answer 1

I have the experience that localhost does not work when containers need to talk to eachother. I would advise you to try and use the IPv4 address of your DHCP by your local network i.e. 192.168.1.1XX. You can check through cmd with ipconfig what address the machine has been allocated by your DHCP.

config.useSingleServer().setAddress("redis://192.168.1.[XXX]:6379");