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From Francesco Maria Magnini <>
Subject Re: Storage/Console SSVM loose connectivity (can't ping them anymore) after creating the first guest instance
Date Thu, 05 Dec 2013 12:05:25 GMT
I know.
As I said on top of the discussion, I tested Cloudstack 4.2 on a CentOS 6.4
deployment (Controller, KVM Host) and never encountered problems on
network. I even tested Advancend networking with VLANS, GRE Tunnels in a
very complicated scenarios.

Switching to Ubuntu (because I need to interact with CEPH), SSVM and KVM
Guest have no connectivity, in a very basic scenario consisting in basic
network zone.

After debugging, watching iptables counters, I see that all the incoming
public traffic is dropped by iptables on the KVM host, and is not passed to
KVM Guests (including SSVM and Guest VMs).

On Thu, Dec 5, 2013 at 12:52 PM, Shanker Balan

> On 05-Dec-2013, at 10:53 am, Sanjeev Neelarapu <
>> wrote:
> > Hi,
> >
> > Make sure that iptable rules are configured properly for icmp and ssh
> > traffic on kvm host.
> > I think icmp is disabled by default on SSVM and CPVM
> > on control IP address, but should be allowed on public IP address.
> FWIW, ICMP works on both the public and private addresses on my lab setup:
> [root@csman1-1 cloudmonkey]# cloudmonkey list systemvms|grep ip
> linklocalip =
> privateip =
> publicip =
> linklocalip =
> privateip =
> publicip =
> [root@csman1-1 cloudmonkey]# fping
> is alive
> [root@csman1-1 cloudmonkey]# fping
> is alive
> [root@csman1-1 cloudmonkey]# fping
> is alive
> [root@csman1-1 cloudmonkey]# fping
> is alive
> [root@csman1-1 cloudmonkey]#
> --
> @shankerbalan
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