On Wed, May 6, 2015 at 10:26 AM, Erik Weber <terbol...@gmail.com> wrote:
> On Wed, May 6, 2015 at 10:20 AM, Erik Weber <terbol...@gmail.com> wrote: > >> I'm troubleshooting an issue where the guest vms does not receive default >> gateway nor dns servers. >> >> And it seems to be due to the following lines in /etc/dhcpopts.txt: >> 10_125_2_150,3 >> 10_125_2_150,6 >> >> Does anyone know why we insert those lines, and/or where it comes from? >> >> > > I also see these two lines in the log: > messages:May 6 07:25:38 r-158-VM cloud: /opt/cloud/bin/edithosts.sh: > unset default router for 10.125.2.150 > messages:May 6 07:25:38 r-158-VM cloud: /opt/cloud/bin/edithosts.sh: > unset dns server for 10.125.2.150 > > which seems to come from > https://github.com/apache/cloudstack/blob/aae393dcd5bb5d96267ada1f6ed142b63a39f685/systemvm/patches/debian/config/opt/cloud/bin/edithosts.sh#L196 > > But why do we do this? seems like a wicked thing to do, to unset default > router and dns server..? > > I like answering myself today, but I believe I solved it. What I came to think about is that I did some NIC shuffling on this VM. Here's how to (hopefully) reproduce: 1) Create a VM on Network 1 2) Add a NIC on Network 2 3) Set Network 2 as default 4) Remove Network 1 If you reproduced it, then the dhcpopts on the VR for Network 2 will have occurences to not send default gateway and dns for the VM. Not sending default gateway and dns servers for additional NICs make sense, but it's a bug that it isn't cleaned up/fixed when set as default NIC. I'll file a bug later if I don't hear anything that should point in the direction that I'm doing something wrong. -- Erik
