Hi All, when we are trying to spin a instance getting the error is "Unable to start a VM due to insufficient capacity" so we have checked storage and RAM it's look enough room place in host.
*And also we have checked the management server log we identified that below error message :* 2016-04-05 06:01:35,974 INFO [c.c.v.VirtualMachineManagerImpl] (Job-Executor-114:ctx-9e73f683 ctx-419ad956) Unable to contact resource. com.cloud.exception.ResourceUnavailableException: Resource [DataCenter:1] is unreachable: Unable to apply userdata and password entry on router In this scenario we have rebooted the respected Virtual Router(VR) and then spin a instance successfully deployed. We are thinking that rebooted is not permanent solution and also not good habit. Please guys if anyone facing this situation Please share the proper solution without any impact on existing instances. Regards, Venkatesh.k