From 388925f6f8362977d22651b0959237a1f7e58fb6 Mon Sep 17 00:00:00 2001
From: yvanzo <yvanzo@metabrainz.org>
Date: Tue, 5 Sep 2023 08:02:57 +0100
Subject: [PATCH] Explicitely set ulimits for mq to ERL_MAX_PORTS

On Linux ERL_MAX_PORTS defaults to 65,536. But the Docker container for
the service `mq` rather uses the host ulimits. When ulimits is infinite,
it can make the container to take a very long time to start while using
a lot of CPU for nothing. It depends on the host settings.

This patch explicitely sets ulimits to 65,536 as recommended for `mq`.

See https://github.com/docker-library/rabbitmq/issues/545 for details.
---
 docker-compose.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docker-compose.yml b/docker-compose.yml
index 8fd85808..38915773 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -113,6 +113,8 @@ services:
         max-size: "10m"
         max-file: "10"
     restart: unless-stopped
+    ulimits:
+      nofile: 65536
     volumes:
       - mqdata:/var/lib/rabbitmq
     expose: