RabbitMQ virtual host error when starting service

Question

I\'ve had a RabbitMQ server running for months. This morning I was unable to connect to it, my applications was timing out and the Management client was unresponsive. Reboot

Answer 1

I figured out what was going on. Someone on my team (me) was creating an unprecedented amount of connections to RabbitMQ. For each connection a file handler is created to one or more files, not sure which. The OS (Windows in my case) has a file handler limit, not sure what the limit is, but when reached, an error is thrown. This corrupted the virtual host (/) and I had to delete it and create it again. Good thing this wasn't production, because then all the messages would've been gone.

Edit (June 2020):

There might be a fix for this so it can't happen again. A virtual host can be limited in how many connections they allow. This way Windows won't faulter on the many file handles. Look in the management portal -> Admin -> Limits, set max-connections to a number you think it plausible for your setup.