On Thu, Jul 30, 2020 at 12:07 AM <tho...@hoberg.net> wrote: > > I honestly don't know, because I have not tried myself, so you might just > want to stop reading right here.
Same here :-) > > But from what I understand about the design philosophy of oVirt, it should be > ok to change it, while nobody probably ever tested it and everybody would > tell you it's a bad idea to do so, unless you're willing to rebuild from > scratch. > > The reason it *should* be ok is that the nodes don't care about the > management engine. > They care only about the information on the shared cluster storage. > How that gets there, who changes it: They couldn't care less. I mostly agree. I am not sure about OVS/OVN. If you do use it, pay extra attention in your tests, before trying this on your production setup. > > Yet, I believe I have seen events being reported back to the management > engine via REST API calls, referring to the management engine via URIs that > should have been using FQDN only. So there is some biliateral communication > going on, mostly asynchronous as far as I can see and not using IPs. Indeed. If you see anything accessing the engine machine using its IP address directly, not through its FQDN, I'd consider it a bug. If such a bug exists in any part of oVirt, please file one. Thanks! As mentioned, not sure about OVS/OVN. If it's indeed so, I'd still consider it a bug, but perhaps it won't be fixed (I am not a networking expert, not sure). I can also see why people might claim that OVS/OVN requires such an exception, even in principle (even if technically you can change it to use names and rely on name resolution). > > What I can tell you, is that /etc/sysconfig/network-scripts/ifcfg-eth0 has > NM_CONTROLLED=no inside, so nmtui won't go near it. You can change that, > delete the line, edit the config... and hopefully it will live. I assume you refer to the appliance, on hosted-engine. In a standalone engine, we do not really care - it's up to the admin to configure networking etc. Generally speaking, you should follow OS docs. I think that with NM_CONTROLLED=no, you can simply edit the file (or update DHCP), and restart networking (or just reboot). > > And in case things go seriously wrong, you should be able to fix it with > hosted-engine --console > > But, again, I never tried it myself. > > But I use DHCP on two out of four farms... In any case: Please test carefully before doing this on production. Good luck and best regards, -- Didi _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/ET5UV2LZ4SWLB4LCM3QVZQDZFMMPAJ7U/
