I’m totally new to OpenNebula and at the moment I struggle with the network connectivity of my vms. In detail I’m not sure about some terms and what is meant by them. here they are:
Network manager driver
This comes first when I add a host to the OpenNebula-server. For the first time I set it up with the dummy driver for testing, but I’m not quite sure whats “driven” by this driver. Is it the network-interface connected to the same VLAN as the OpenNebula-server? In my szenario the communication between them is in a VLAN, so should I choose 802.1Q? Where in my kvm-host can I check wich driver I have to use?
When I configure a virtual network I’m asked for the so called Bridge. The help reads: name of the physical bridge in the physical host where the VM should connect it’s network interface. Per defaul a kvm-host provides a virtual bridge as described here http://wiki.libvirt.org/page/VirtualNetworking. So the VMs on the kvm-node are automatically connected to that bridge (virbr0 in that case). Is it this bridge which I have to declare at this point? Or do I have to configure a new bridge? The Network model has the same options as network manager driver above, so I have to choose the same (802.1Q), haven’t I?
In the same mask there is an option VLAN which I can configure with yes or no. The description reads: wether or not to isolate this virtual network using the Virtual Network manager drivers. I’m not sure about what this means. Is it that if the kvm host is already in a VLAN and ‘yes’ is choosen, there comes a new VLAN. And if ‘no’ is choosen it will be integrated in the existin VLAN?
Description reads: name of the physical network device that will be attached to the bridge. Is this the eth0-Interface of the VM which is connected the the virbr0?
I hope these questions are not too basic, but after reading the docs it was not that clear to my.