We need a little more information - how are they failing in QMC? any hints there?
Is it possible there is a permissions issue? The service account for QMC does not have sufficient permissions to read or write to certain folders?
Or- are you using Data connections with named drive letters (e.g. c:\) or mapped drive letters which are not the same or not accessible from the QDS machine where the QMC-driven reload happens?
I am having the same issue. The Operations Monitor is not reloading from a Task, but does reload from the Data Load Editor.
When the task fails, it says 'No slave nodes found to execute Task'.
I have 5 other daily reload tasks scheduled and they all are successful every evening. The only one I am having an issue with is the Operations Monitor. Can you please help?
I also had the same issue after a fresh installation giving the error message "No slave nodes found to execute Task". I did a log debug and got to the bottom of the issue. Two ports are used in the QMS (Scheduled). 5050 and 5151.
My presumed that the ports where in use by another application and therefore the issues...I did some tests and it seemed that both ports where not in use.
The culprit was Kaspersky Anti Virus monitoring port 5050. Yes just monitoring and after I disabled the monitoring of the task all worked well.
After I got the issue, it was quite difficult to find the issues with the ports (in my case anyway), but I managed to get it working.
Hope this helps