Sometimes when working on a Cloudstack problem we need extra verbosity in the logs.To set the logs to DEBUG level we need to change the log4j config file and restart the service.
In order to do this on a management server, these are the steps - obviously, if you have more than 1 management server, you need to do it on all of them.
sed -i 's/INFO/DEBUG/g' /etc/cloudstack/management/log4j-cloud.xml
service cloudstack-management restart
To do this on a hypervisor server, do the following. KVM only btw, no need to do anything if you use VMWare or Xen/XCP-ng.
sed -i 's/INFO/DEBUG/g' /etc/cloudstack/agent/log4j-cloud.xml
service cloudstack-agent restart