Hello,
That's an unfortunate behaviour. Wonder what the culprit is.
Did you try to use cloudbase-init in the Windows VMS? Does it make
things better/worse?
REgards
On 2023-01-30 15:32, Gary Dixon wrote:
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 [1]ms@quadris‑support.com
W: www.quadris.co.uk
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-----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
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