Hi Stackers,

It seems running Openstack components in High Availability hasn't been really a 
focus point lately, am I right?

The general docs don't really mention HA except for nova-network. So I did some 
resource on how to run Nova in a High Availability and have some questions 
about it:

The docs guides you on how to setup one cloud controller (running MySQL, 
nova-api, RabbitMQ etc.) and 2+n nodes for nova compute/network. But it does 
not mention how to make the cloud controller redundant. If the cloud controller 
brakes we have a serious problem!

So, we can run MySQL in master-master mode on multiple hosts, we can run 
nova-api on serveral hosts and load balance those and RabbitMQ has a cluster ha 
setup as well but is this the way to go? I can't find a clear answer to this. I 
am hoping one can shine some light on this!

Best regards,

Tristan van Bokkem
Datacenter Operations

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