Thx Nux - this is good news The issue doesn't happen all the time - we have seen it occasionally after a windows guest reboot - something seems to stop the nic from getting its statically assigned IP configuration and so it reverts to creating a new nic within the guest OS and this is where it then picks up the Zone DNS server IP's - I'm guessing from the DNS provider on the virtual router. If we look in Device Mgr on the guest and 'show hidden devices' we see a 'ghosted' nic adapter - but this will still have registry entries for its IP config - so the new nic that seems to be created automatically cannot use the already assigned IP address and picks a new one from DHCP on the VR and also then gets the Zone DNS IP Addresses.
Our workaround for if/when this happens is to delete the ghosted nic adapter in Device Mgr and its corresponding IP configuration in the windows registry - and then manually set the static IP info on the remaining nic adapter Gary Dixon Senior Technical Consultant T: +44 161 537 4990 E: v...@quadris-support.com W: www.quadris.co.uk The information contained in this e-mail from Quadris may be confidential and privileged for the private use of the named recipient. The contents of this e-mail may not necessarily represent the official views of Quadris. If you have received this information in error you must not copy, distribute or take any action or reliance on its contents. Please destroy any hard copies and delete this message. -----Original Message----- From: Nux <n...@li.nux.ro> Sent: 30 January 2023 12:01 To: users@cloudstack.apache.org Cc: Gary Dixon <gary.di...@quadris.co.uk.invalid> Subject: Re: Override DNS IP addresses Hi Gary, Yes, indeed, this is coming to 4.18: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fapache%2Fcloudstack%2Fpull%2F6425&data=05%7C01%7CGary.Dixon%40quadris.co.uk%7Caa1d5e15f15848273cb508db02b9a01b%7Cf1d6abf3d3b44894ae16db0fb93a96a2%7C0%7C0%7C638106768520826236%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=QZjqm0qb4OjtfoujFPjZe%2F8W8jaU9f8gGpa12ZfoyCw%3D&reserved=0 Until then I am not sure how to solve the problem though. If IPs and DNS are statically assign, why does this continue to be a problem? Regards On 2023-01-30 11:37, Gary Dixon wrote: > HI everyone > > CS 4.15.2 > > Hypervisor Ubuntu 20.04 KVM > > The vast majority of our tenants in CS are windows Active directory > domain based networks. This relies on the Domain Controllers being the > DNS servers for the domain. > > In each guest OS we statically assign IP address information and set > the DNS server addresses to point to the IP address of the Domain > Controllers > > We see issues where the Zone defined DNS server IP addresses > (8.8.8.8, 8.8.4.4) are being passed through to the guest Windows VM’s > which then causes them to lose their domain trust because they cannot > locate the domain controllers > > Is there a way to override the global Zone DNS server IP addresses > that are passed through to guest VM’s – can this be changed for each > Tennant/Domain in the Cloud database ? > > Best regards > > Gary > > Gary Dixon > > Senior Technical Consultant > > T: +44 161 537 4990 > > E: v [1]ms@quadris‑support.com > > W: > https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.q > uadris.co.uk%2F&data=05%7C01%7CGary.Dixon%40quadris.co.uk%7Caa1d5e15f1 > 5848273cb508db02b9a01b%7Cf1d6abf3d3b44894ae16db0fb93a96a2%7C0%7C0%7C63 > 8106768520826236%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV > 2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=r25zVpzJzf > jUG46HKguwC%2FRkIm3nYcZAmRgiBG%2BKPlA%3D&reserved=0 > > The information contained in this e-mail from Quadris may be > confidential and privileged for the private use of the named > recipient. The contents of this e-mail may not necessarily represent > the official views of Quadris. If you have received this information > in error you must not copy, distribute or take any action or reliance > on its contents. Please destroy any hard copies and delete this > message. > > > > Links: > ------ > [1] tel:+44%207989717661
