split brains

Hullo I’ve encountered a couple of firms that have run into challenges with Open Stack environments becoming ‘split brain’, e.g. https://www.youtube.com/watch?v=JZwYZqx0RMk <https://www.youtube.com/watch?v=JZwYZqx0RMk> The narrative is that there’s an issue with the RabbitMQ messaging that is causing this. I’ve used RabbitMQ since it was being developed by various banks and I’ve successfully deployed it to control large scale IoT systems. I’ve always found it reliable as a MoM approach, although I’ve never tried the transactional message type that comes with AMQP 1.0 (I think that’s the version). Can anyone cast any light on what this type of scenario is referring to? tia Tim