In Apache CloudStack, Host Affinity and Host Anti-Affinity refer to the ability to deterministically ensure that a set of Instances run on the same or diverse hypervisor hosts in order to meet specific workload needs. How Affinity Groups Worked Previously Before Apache CloudStack 4.18 there were two types of Affinity Groups: Host Affinity and Host Anti-affinity.   • Host Affinity Host Affinity Groups allow users to specify that a set of Instances should always run on the same hypervisor host. This ensures minimum latency and maximum bandwidth between Instances as there’s no need for the network traffic to leave […]