Private External Networks in Neutron

You might find yourself in a position where you need to restrict access by tenants to specific external networks. In Openstack there's the notion that external networks are accessible by all tenants and anyone can attach their private router to it. This might not be the case if you want to only allow specific users … Continue reading Private External Networks in Neutron

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VM to VM communication: Same network & same compute host

In a physical world, machines communicate with each other without routers when they belong to the same network. This is the same case with openstack, VMs communicate over the same network without routers. When two VMs belonging to the same network happen to get deployed on the same compute host, their logical diagram looks like … Continue reading VM to VM communication: Same network & same compute host