Error: This operation would violate a virtual machine affinity/anti-affinity rule

Products

• VMware Cloud Director

Issue/Introduction

• vApp fails to power on in VMware Cloud Director due to an anti-affinity rule violation. 

• VMware Cloud Director task fails with error... "This operation would violate a virtual machine

  affinity/anti-affinity rule.} - Underlying system error:

  com.vmware.vim.binding.vim.fault.RuleViolation

  machine affinity/anti-affinity rule."

• The vCenter vpxd.log may show the following error... "failed constraint check false on host" and "com.vmware.drs.constraints.cpu.InsufficientHostCpuCapacityFault"

Environment

• 10.x
• 10.3.3

Cause

This can be caused by disconnected hosts in vCenter. 

Resolution

• Ensure that the hosts in this cluster are connected in vCenter to provide sufficient resources to meet the anti-affinity rules.
• Also see Troubleshooting an ESXi host in a "not responding"/"disconnected" state