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Why we can only create one nove-compute per machine ?

I noticed that a global variable _launcher in service.py(https://github.com/openstack/nova/blob/master/nova/service.py) prevents us from creating multiple same services per machine.

However, if we hacked the code the modify this, we can create multiple same services per machine. Are there any concerns here to prevent us doing so? Or in other word, what unexpected event will happen if we change that ? Thank you in advance.

Why we can only create one nove-compute per machine ?

I noticed that a global variable _launcher in service.py(https://github.com/openstack/nova/blob/master/nova/service.py) service.py (https://github.com/openstack/nova/blob/master/nova/service.py) prevents us from creating multiple same services per machine.

However, if we hacked the code the modify this, we can create multiple same services per machine. Are there any concerns here to prevent us doing so? Or in other word, what unexpected event will happen if we change that ? Thank you in advance.

Why we can only create one nove-compute per machine ?

I noticed that a global variable _launcher in service.py (https://github.com/openstack/nova/blob/master/nova/service.py) service.py prevents us from creating multiple same services per machine.

However, if we hacked the code the modify this, we can create multiple same services per machine. Are there any concerns here to prevent us doing so? Or in other word, what unexpected event will happen if we change that ? Thank you in advance.