Controlling virtual machine density and placement distribution in a converged infrastructure resource pool
Aspects include allocating virtual resources to physical resources in a computer environment and aggregating the virtual resources, as a virtual resource pool, at a per virtual machine level in the computer environment. Other aspects include evaluating the virtual resources in the virtual resource pool against resource pool domain constraints. Other aspects include determining a resource allocation adjustment as a function of the evaluating. The resource allocation adjustment is configured to achieve a maximum specified virtual machine density. Other aspects include adjusting the virtual resources based on the resource allocation adjustment.
1. A method, comprising:
allocating virtual resources to physical resources in a computer environment;
aggregating the virtual resources, as a virtual resource pool, at a per virtual machine level in the computer environment;
evaluating the virtual resources in the virtual resource pool against resource pool domain constraints, wherein the resource pool domain constraints comprise a maximum size of a hypervisor domain, Layer 2 network adjacency domain size, maximum available storage input/output operations per second, maximum inter-switch link hops, and maximum virtual LANs and virtual SANs;
determining a resource allocation adjustment as a function of the evaluating, wherein the resource allocation adjustment is configured to achieve a maximum specified virtual machine density; and
adjusting the virtual resources based on the resource allocation adjustment; and
subsequent to adjusting the virtual machine resources based on the resource allocation adjustment, determining whether additional physical resources are needed in the computer environment.
2. The method of claim 1 , wherein the allocating the virtual resources to the physical resources includes allocating at least one of:
virtual CPUs per each physical core;
virtual memory per available memory of each physical node;
virtual network interface cards per each physical network interface card;
virtual switch ports per each physical port; and
available virtual storage associated with available physical storage.
3. The method of claim 1 , wherein the virtual resource pool includes a total number of virtual resources assigned per virtual machine, the assigned virtual resources including at least one of:
virtual CPUs;
virtual memory;
virtual network interface cards;
virtual storage;
virtual machines per virtual LAN; and
virtual machines per virtual SAN.
4. The method of claim 1 , wherein the virtual resources include available virtual load-balancers and available virtual firewalls.
5. The method of claim 1 , wherein the resource allocation adjustment includes adding a new virtual machine.
6. The method of claim 1 , wherein the resource allocation adjustment includes reclaiming an existing virtual machine.
7. A method, comprising:
allocating virtual resources to physical resources in a computer environment;
aggregating the virtual resources, as a virtual resource pool, at a per virtual machine level in the computer environment;
evaluating the virtual resources in the virtual resource pool against resource pool domain constraints, wherein the resource pool domain constraints comprise a maximum size of a hypervisor domain, wherein the resource pool domain constraints further comprise Layer 2 network adjacency domain size, maximum available storage input/output operations per second, maximum inter-switch link hops, and maximum virtual LANs and virtual SANs;
determining a resource allocation adjustment as a function of the evaluating, wherein the resource allocation adjustment is configured to achieve a maximum specified virtual machine density; and
adjusting the virtual resources based on the resource allocation adjustment.