---
title: "Ncloud Simple RabbitMQ troubleshooting"
slug: "nsr-troubleshoot"
updated: 2026-09-17T09:17:40Z
published: 2026-09-17T09:17:40Z
canonical: "guide.ncloud-docs.com/nsr-troubleshoot"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://guide.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Ncloud Simple RabbitMQ troubleshooting

Available in VPC

You might run into the following problems when using Ncloud Simple RabbitMQ. Find out causes and possible solutions.

## Cannot connect from outside

I created a cluster, but I can't connect to it from outside the network.

#### Cause

The load balancer subnet must be public if the cluster is to be accessed from outside. Check if the load balancer subnet set for the cluster is public.

#### Solution

- The initial specifications set when creating the cluster cannot be changed. If an external connection is required, create a new cluster and set the load balancer subnet to public.
- You can connect to it from clients connected to the SSL VPN agent. Set up SSL VPN by referring to the [SSL VPN guide](/docs/en/sslvpn-overview).

## Change cluster specifications

I want to change the specifications after creating a cluster. I want to change the number of nodes.

#### Cause

The specifications of an already created cluster cannot be changed.

#### Solution

If you need to change the specifications, recreate the cluster with the desired specifications.

## Cannot create a cluster

I cannot create a cluster.

#### Cause

The cluster cannot be created if you have reached the limit of second-generation servers (G2).

#### Solution

- If you are an enterprise customer, increase the limit for second generation servers in [Service Quota](https://console.ncloud.com/service-quota/quota-status).
- If you are an individual customer, you can request an increase in the limit on second generation servers from [Customer Support](https://www.ncloud.com/support/question/service).

## Lost password

I have forgotten the user ID and password needed to access RabbitMQ.

#### Solution

**Find user ID** You can find your user ID required to connect to the RabbitMQ server and the Management UI in the VPC environment of the NAVER Cloud Platform console by navigating to **Menu** > **All Services** > **Application Services** > **Ncloud Simple RabbitMQ** and clicking **[User Management]** for the applicable cluster.

**Find password** If you have forgotten your password, you will not be able to find it. You will need to reset it. For more information on changing a password, see [Editing account information](/docs/en/nsr-account-vpc#%EA%B3%84%EC%A0%95%EC%A0%95%EB%B3%B4%EC%88%98%EC%A0%95).

## Cannot apply a certificate

I cannot apply a certificate.

#### Cause

Ncloud Simple RabbitMQ does not support TLS.

#### Solution

- To apply a certificate, use a web server to apply a reverse proxy.
- If you are not using a web server, provide a relay server for requests, or build MQ directly on a separate VM and then apply TLS.

## Learning resources

We offer various materials for you to explore. To learn more about Ncloud Simple RabbitMQ, check out these helpful links:

- FAQs: [Ncloud Simple RabbitMQ FAQs](https://www.ncloud.com/support/faq/prod?categoryCode3=SV_0069&page=1).

              Note

              

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