fix(core): Add an option to enable dual-stack lookup to support IPv6 for redis (#13118)

packages/@n8n/config/src/configs/scaling-mode.config.ts

@@ -52,6 +52,10 @@ class RedisConfig {
 	/** Whether to enable TLS on Redis connections. */
 	@Env('QUEUE_BULL_REDIS_TLS')
 	tls: boolean = false;
+
+	/** Whether to enable dual-stack hostname resolution for Redis connections. */
+	@Env('QUEUE_BULL_REDIS_DUALSTACK')
+	dualStack: boolean = false;
 }
 
 @Config

packages/@n8n/config/test/config.test.ts

@@ -214,6 +214,7 @@ describe('GlobalConfig', () => {
 					username: '',
 					clusterNodes: '',
 					tls: false,
+					dualStack: false,
 				},
 				gracefulShutdownTimeout: 30,
 				prefix: 'bull',

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

@@ -131,7 +131,7 @@ export class RedisClientService extends TypedEmitter<RedisEventMap> {
 	}
 
 	private getOptions({ extraOptions }: { extraOptions?: RedisOptions }) {
-		const { username, password, db, tls } = this.globalConfig.queue.bull.redis;
+		const { username, password, db, tls, dualStack } = this.globalConfig.queue.bull.redis;
 
 		/**
 		 * Disabling ready check allows quick reconnection to Redis if Redis becomes
@@ -153,6 +153,8 @@ export class RedisClientService extends TypedEmitter<RedisEventMap> {
 			...extraOptions,
 		};
 
+		if (dualStack) options.family = 0;
+
 		if (tls) options.tls = {}; // enable TLS with default Node.js settings
 
 		return options;