2 ESXi 5.5 vsphere hypervisor hosts were setup. After that, a vCenter virtual appliance, downloaded from VMware website, was setup and control these 2 hosts. vCenter is working after making some options to setup database and SSO, and restart all vCenter daemons.
Suddenly, it does not seems working as in its web console, a few services were stopped and can not be restarted. Attempt to start would resulted in error: VPXD must be stopped to perform this operation. Even I stopped it by "chkconfig vmware-vpxd off" doesn't seem to work. How to solve the problem?