We have our own VNET configured. I would like to use the same VNET / subnet while creating the ACS service. I am using DC/OS. Can I configure the VNET / Subnet and NSG through Azure ACS template ?
At this time configuring VNets is not possible. However this is something we will be fixing very soon. First through some open source template, and once fully tested, through the ACS resource provider in ARM.