RabbitMQ connection through Nginx - nginx

Question

I am trying to setup rabbitmq it can be accessed externally (from non-localhost) through nginx.
nginx-rabbitmq.conf:
server {
listen 5672;
server_name x.x.x.x;
location / {
proxy_pass http://localhost:55672/;
}
}
rabbitmq.conf:
[
{rabbit,
[
{tcp_listeners, [{"127.0.0.1", 55672}]}
]
}
]
By default guest user can only interact from localhost, so we need to create another user with required permissions, like so:
sudo rabbitmqctl add_user my_user my_password
sudo rabbitmqctl set_permissions my_user ".*" ".*" ".*"
However, when I attempt a connection to rabbitmq through pika I get ConnectionClosed exception
import pika
credentials = pika.credentials.PlainCredentials('my_username', 'my_password')
pika.BlockingConnection(
pika.ConnectionParameters(host=ip_address, port=55672, credentials=credentials)
)
--[raises ConnectionClosed exception]--
If I use the same parameters but change host to localhost and port to 5672 then I connect ok:
pika.ConnectionParameters(host=ip_address, port=55672, credentials=credentials)
I have opened port 5672 on the GCE web console, and communication through nginx is happening: nginx access.log file shows
[30/Apr/2014:22:59:41 +0000] "AMQP\x00\x00\x09\x01" 400 172 "-" "-" "-"
Which shows a 400 status code response (bad request).
So by the looks the request fails when going through nginx, but works when we request rabbitmq directly.
Has anyone else had similar problems/got rabbitmq working for external users through nginx? Is there a rabbitmq log file where I can see each request and help further troubleshooting?

Answer 1

Since nginx 1.9 there is stream module for the tcp or udp (not compiled with by default).
I configured my nginx (1.13.3) with ssl stream
stream {
upstream rabbitmq_backend {
server rabbitmq.server:5672
}
server {
listen 5671 ssl;
ssl_protocols TLSv1.2 TLSv1.1 TLSv1;
ssl_ciphers RC4:HIGH:!aNULL:!MD5;
ssl_handshake_timeout 30s;
ssl_certificate /path/to.crt;
ssl_certificate_key /path/to.key;
proxy_connect_timeout 1s;
proxy_pass rabbitmq_backend;
}
}
https://docs.nginx.com/nginx/admin-guide/security-controls/terminating-ssl-tcp/

Answer 2

You have configured nginx as an HTTP reverse proxy, however rabbitmq is configured to use the AMQP protocol (see description of tcp_listeners at https://www.rabbitmq.com/configure.html)
In order for nginx to do anything meaningful you will need to reconfigure rabbitmq to use HTTP - for example http://www.rabbitmq.com/web-stomp.html.
Of course, this may have a ripple effect because any clients that are accessing rabbitmq via AMQP must be reconfigured/redesigned to use HTTP.

Answer 3

You can try and proxy to tcp, installing a tcp-proxy module for nginx to work with AMQP.
https://github.com/yaoweibin/nginx_tcp_proxy_module
Give it a go.

Answer 4

Nginx was originally only HTTP server, I also suggest looking into that above referred tcp proxy module, but if you would like to have proven load-balancer which is general TCP reverse proxy (not just HTTP, but can handle any protocol in general), you might consider using HAproxy.

Answer 5

since amqp is on tcp/udp level you need to configure nginx for tcp/udp connection
https://docs.nginx.com/nginx/admin-guide/load-balancer/tcp-udp-load-balancer

Answer 6

I might be late to the party, but I am very much sure that my article will surely help a lot of people in the upcoming days.
In the article I have explained how to install Letsencrypt certificate for RabbitMQ Management GUI with NGINX as reverse proxy on Port: 15672 which runs on HTTP protocol.
I have also used the same SSL certificates to power up the RabbitMQ Server that runs on AMQP protocol.
Kindly go through the following article for detailed description:
https://stackcoder.in/posts/install-letsencrypt-ssl-certificate-for-rabbitmq-server-and-rabbitmq-management-tool
NOTE: Don't configure RabbitMQ Server running on port 5672 as a reverse proxy. Even if you do then kindly use NGINX streams. But I
highly recommend sticking with adding certificate paths in
rabbitmq.conf file as RabbitMQ works on TCP/UDP