<div dir="ltr">Hello Eugen,<div><br></div><div>I got what you mean, but "So as long as the compute nodes </div>and the network infrastructure are running we can work, the less <br>important VMs are not reachable during that time, of course, but it <br><div>doesn't really hurt anybody."</div><div><br></div><div>Can you explain this to me?</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Nguyen Huu Khoi<br></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Aug 13, 2023 at 1:13 AM Eugen Block <<a href="mailto:eblock@nde.ag">eblock@nde.ag</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">That's depending on your use-case. We have two types of VMs in our <br>
cloud, production VMs and the rest (self-service tenant networks). All <br>
production VMs are in provider networks, launched with config-drive <br>
and independent of the control plane. So as long as the compute nodes <br>
and the network infrastructure are running we can work, the less <br>
important VMs are not reachable during that time, of course, but it <br>
doesn't really hurt anybody.<br>
So if you have machines that are required to work independent of <br>
network nodes (control nodes) you should consider using such provider <br>
networks. Or move the VMs to those networks if you already have been <br>
using provider networks.<br>
<br>
Zitat von Nguyễn Hữu Khôi <<a href="mailto:nguyenhuukhoinw@gmail.com" target="_blank">nguyenhuukhoinw@gmail.com</a>>:<br>
<br>
> Yes. I agree with you but when all controller is down and some users need<br>
> to reboot their instances then it won't have ip. This is my worry.<br>
><br>
> Nguyen Huu Khoi<br>
><br>
><br>
> On Fri, Aug 11, 2023 at 5:00 AM Clark Boylan <<a href="mailto:cboylan@sapwetik.org" target="_blank">cboylan@sapwetik.org</a>> wrote:<br>
><br>
>> On Thu, Aug 10, 2023, at 12:00 AM, Nguyễn Hữu Khôi wrote:<br>
>> > Hello guys.<br>
>> ><br>
>> > Sometimes I see that my instances won't get IP from Neutron DHCP Agent.<br>
>> ><br>
>> > Is it good if we set a fixed port for instance and set a static ip in<br>
>> > the instance's netplan configuration also?<br>
>><br>
>> We do this for IPv6 addresses on some of our servers as we've had problems<br>
>> with RAs. It seems to work fine in that case. Ideally, this shouldn't be<br>
>> necessary for any cloud instance though and it might be worth digging into<br>
>> why dhcp isn't working so that it can be corrected.<br>
>><br>
>> ><br>
>> ><br>
>> > Nguyen Huu Khoi<br>
>><br>
<br>
<br>
<br>
<br>
</blockquote></div>