Workers can't connect to redis behind proxy

paulsbecks · September 4, 2025, 7:10am

Description

Workers run into timeouts repeatedly trying to connect to Redis.

Error Message

Workers log: connection canceled.

Background Info

Redis is running and I can successfully connect from localhost and pods running in my k8s cluster via redis-cli -u rediss://<user>:<pass>@<host>:<port> --tls --sni <host>. SNI flag has to be set, otherwise the connection fails.

I tried the same with bullmq, as it appears n8n is using it under the hood.

const connection = new Redis({
  port: <port>,
  host: <host>,
  username: <user>,
  password: <pass>,
  tls: {
    servername: <host>
  },
  maxRetriesPerRequest: null
})

With the servername in the tls options set. It connects successfully otherwise not.

Now I did a look into the n8n code and found that you set the TLS config, but not the servername if the tls config flag is set to true:

github.com/n8n-io/n8n

packages/cli/src/services/redis-client.service.ts

e4fb6e5f3


      
          			password,
          			db,
          			enableReadyCheck: false,
          			maxRetriesPerRequest: null,
          			retryStrategy: this.retryStrategy(),
          			...extraOptions,
          		};
          
          		if (dualStack) options.family = 0;
          
          		if (tls) options.tls = {}; // enable TLS with default Node.js settings
          
          		return options;
          	}
          
          	/**
          	 * Strategy to retry connecting to Redis on connection failure.
          	 *
          	 * Try to reconnect every 500ms. On every failed attempt, increment a timeout
          	 * counter - if the cumulative timeout exceeds a limit, exit the process.
          	 * Reset the cumulative timeout if >30s between reconnection attempts.

Is this a known issue? Is there a workaround? My cloud provider requires setting the servername. Is there an option to set it for n8n?

Cheers.

system · December 3, 2025, 7:10am

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