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From Dan Dong <dongda...@gmail.com>
Subject Re: Should one create NAT on KVM host?
Date Fri, 14 Nov 2014 15:52:19 GMT
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! <nux@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" <dongdan39@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
>

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