👀 Views: 94 💬 Answers: 1 📅 Created: 2025-06-08

gcp compute-engine redis firewall bash

I'm trying to implement I'm trying to debug I'm currently working with an scenario where multiple GCP Compute Engine instances deployed on a private VPC are unable to connect to a Redis instance running on another VM within the same VPC. The behavior I encounter when attempting to connect is `Connection refused`. I've ensured that the Redis server is up and running by connecting to it from the server itself using the `redis-cli`, and everything works fine locally. To troubleshoot, I've checked the firewall rules in the VPC. The rule I created allows TCP traffic on port 6379, but I'm not sure if it's configured correctly. Here’s what my firewall rule looks like: ```bash gcloud compute firewall-rules create allow-redis --allow tcp:6379 --source-ranges 10.128.0.0/20 --target-tags redis-server ``` The Redis instance has the tag `redis-server`, and the source ranges cover the subnet of the instances that need access. I also verified that the Redis configuration file (`/etc/redis/redis.conf`) has the following settings: ```bash bind 0.0.0.0 protected-mode no ``` This should allow any IP to connect, but still, the instances are unable to reach the Redis service. I've also tried temporarily disabling the firewall rules entirely to see if it resolves the scenario, but I still get the same connection refused behavior. I can ping the Redis instance from the Compute Engine instances, so network connectivity seems fine. Could there be something amiss in the way I've configured either the firewall or Redis? Any insights on diagnosing this further would be appreciated! I'm working in a Windows 10 environment.