Thank you all for the hints, I'm confusing about the /etc/network/interfaces configuration on my ubuntu KVM Hypervisor. If I follow the official guide, the machine just lost network connection and could not be logged in anymore. While if I add entry for eth0 itself(
auto eth0 iface eth0 inet manual ), SSVM could be created and get logged in, but it could not contact the Management Server, so still useless. Could anyone provide an example of the interface settings on Ubuntu KVM? Could entry of eth0.100 and eth0 coexist? http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/latest/hypervisor/kvm.html auto lo iface lo inet loopback # The primary network interface auto eth0.100 iface eth0.100 inet static address 192.168.42.11 netmask 255.255.255.240 gateway 192.168.42.1 dns-nameservers 8.8.8.8 8.8.4.4 dns-domain lab.example.org # Public network auto cloudbr0 iface cloudbr0 inet manual bridge_ports eth0.200 bridge_fd 5 bridge_stp off bridge_maxwait 1 # Private network auto cloudbr1 iface cloudbr1 inet manual bridge_ports eth0.300 bridge_fd 5 bridge_stp off bridge_maxwait 1 Cheers, Dan 2014-11-14 4:19 GMT-06:00 Nux! <n...@li.nux.ro>: > Hello Dan, > > You don't need NAT for IPs in the same subnet to reach each other, but you > will need it if you want SSVM to reach the internet (and download templates > etc). > > Also by the sound of it you are running a Basic network with security > groups, so make sure your security groups will allow VMs to get in touch, > if that's what you wish. > > HTH > Lucian > > -- > Sent from the Delta quadrant using Borg technology! > > Nux! > www.nux.ro > > ----- Original Message ----- > > From: "Dan Dong" <dongda...@gmail.com> > > To: users@cloudstack.apache.org > > Sent: Thursday, 13 November, 2014 21:12:55 > > Subject: Should one create NAT on KVM host? > > > Hi, All, > > I have a question on basic network configuration of cloudstack: > > 1. The Management Server-->192.168.0.100 > > 2. One KVM host--> 192.168.0.101 > > 3. System VMs--> 192.168.0.110-192.168.0.120 > > 3. The guest VMs-->192.168.0.150-192.168.0.250 > > > > That is, they are all in the same network of 192.168.0.0/24, should I > make > > NAT on the KVM host to let SSVM running on it to contact the Management > > Server( and the outside world)? > > > > (SSVM<->KVM Host<->Management Server) > > > > Cheers, > > Dan >
