We have a host in a cluster that periodically has an alert next to it saying the following
"Unable to apply DRS resource settings on host ********* in ****. The operation is not allowed in the current state.. This can significantly reduce the effectiveness of DRS.
This only happens from time to time and then resolves itself. Is it anything to worry about, and if so what is the best way to resolve it?.
I have seen mentioned to restart the management agents, If i were to do this in the day in production would it cause any issues to the guests running on it.
I would really appreciate your input.
Excellent, thanks for your prompt reply.
In your opinion if i were to restart the managemnt agents, would this cause an issue to the running guests on that host. Or would there just be no access to management of that host until they restarted?.
Remember that restart of Management Agent or even losing its connectivity does not affect the virtual machine operation and network connectivities
Select Host > VMs, and list/sort by VMware tools status and check if you find any VMtools in 'Installing' state. If there's any, this will prevent applying DRS settings until installation completed. Though there could be multiple reasons, just mentioning the common one.