Domain Controller Down (VM)
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@JaredBusch said in Domain Controller Down (VM):
@scottalanmiller said in Domain Controller Down (VM):
@wirestyle22 said in Domain Controller Down (VM):
@JaredBusch It has both. I set a static IP on the computer I am on currently and can connect to the internet.
Now that you are online again, is DNS working on the DC that is up? If so, good. If not, why not?
Willing to bet that the second DNS server is not in the DHCP config so the clients only looked to the first.
BUt that is unfixable at the moment.
That's my guess as well.
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@JaredBusch said in Domain Controller Down (VM):
@scottalanmiller said in Domain Controller Down (VM):
@wirestyle22 said in Domain Controller Down (VM):
@JaredBusch It has both. I set a static IP on the computer I am on currently and can connect to the internet.
Now that you are online again, is DNS working on the DC that is up? If so, good. If not, why not?
Willing to bet that the second DNS server is not in the DHCP config so the clients only looked to the first.
Which would also explain why he can't rejoin the network.
Would still be good to know if the second DC is up and running.
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So ignore everything related to omg, it is a DC.
You simply resolve a normal basic VMWare VM issue.
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@BRRABill said in Domain Controller Down (VM):
@JaredBusch said in Domain Controller Down (VM):
@scottalanmiller said in Domain Controller Down (VM):
@wirestyle22 said in Domain Controller Down (VM):
@JaredBusch It has both. I set a static IP on the computer I am on currently and can connect to the internet.
Now that you are online again, is DNS working on the DC that is up? If so, good. If not, why not?
Willing to bet that the second DNS server is not in the DHCP config so the clients only looked to the first.
Which would also explain why he can't rejoin the network.
Would still be good to know if the second DC is up and running.
Not relevant to resolving the issue at hand.
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@JaredBusch said in Domain Controller Down (VM):
So ignore everything related to omg, it is a DC.
You simply resolve a normal basic VMWare VM issue.
This ^^^
Time to work through good, old fashioned triage.
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No redundant DNS and no DHCP failover.... basic networking issues. Now that you've discovered them you can fix them permanently.
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@JaredBusch said in Domain Controller Down (VM):
@scottalanmiller said in Domain Controller Down (VM):
@wirestyle22 said in Domain Controller Down (VM):
@JaredBusch It has both. I set a static IP on the computer I am on currently and can connect to the internet.
Now that you are online again, is DNS working on the DC that is up? If so, good. If not, why not?
Willing to bet that the second DNS server is not in the DHCP config so the clients only looked to the first.
BUt that is unfixable at the moment.
How do I make it fixable? This places backups are absolutely horrendous and I'm sure it is not recoverable. I have been fighting with them to change it and then this happens.
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The fastest thing to do is to do is to simply restore from Veeam/Unitrends/Whatever.
Done up and nothing else matters.
You can then prioritize resolving the fagility in the current setup.
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If you have no backups then you need to look at DHCP and getting a second/new server set up. Or seeing if your firewall has the ability to hand out addresses that may be the quickest way to do it.
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@wirestyle22 said in Domain Controller Down (VM):
@JaredBusch said in Domain Controller Down (VM):
@scottalanmiller said in Domain Controller Down (VM):
@wirestyle22 said in Domain Controller Down (VM):
@JaredBusch It has both. I set a static IP on the computer I am on currently and can connect to the internet.
Now that you are online again, is DNS working on the DC that is up? If so, good. If not, why not?
Willing to bet that the second DNS server is not in the DHCP config so the clients only looked to the first.
BUt that is unfixable at the moment.
How do I make it fixable? This places backups are absolutely horrendous and I'm sure it is not recoverable. I have been fighting with them to change it and then this happens.
If you have no backup, then browse the datastore as we told you and find out if all the VM files are still there.
In terms of DR, the only important one is the VMDK(s)
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@coliver said in Domain Controller Down (VM):
If you have no backups then you need to look at DHCP and getting a second/new server set up. Or seeing if your firewall has the ability to hand out addresses that may be the quickest way to do it.
That is a step down the road if the VM is completely unrecoverable.
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@JaredBusch said in Domain Controller Down (VM):
The fastest thing to do is to do is to simply restore from Veeam/Unitrends/Whatever.
Done up and nothing else matters.
You can then prioritize resolving the fagility in the current setup.
So AD on the down DC would not have been syncing with the other DC he has if DNS was set up incorrectly?
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@BRRABill said in Domain Controller Down (VM):
@JaredBusch said in Domain Controller Down (VM):
The fastest thing to do is to do is to simply restore from Veeam/Unitrends/Whatever.
Done up and nothing else matters.
You can then prioritize resolving the fagility in the current setup.
So AD on the down DC would not have been syncing with the other DC he has if DNS was set up incorrectly?
This does not matter FFS, forget about AD.
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@BRRABill said in Domain Controller Down (VM):
@JaredBusch said in Domain Controller Down (VM):
The fastest thing to do is to do is to simply restore from Veeam/Unitrends/Whatever.
Done up and nothing else matters.
You can then prioritize resolving the fagility in the current setup.
So AD on the down DC would not have been syncing with the other DC he has if DNS was set up incorrectly?
This is a down DNS and DHCP server for all intents and purposes at this point. We don't care about AD until he gets DNS and DHCP back up and running.
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@JaredBusch said
This does not matter FFS, forget about AD.
He said there is another DC. How does it not matter?
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@BRRABill said in Domain Controller Down (VM):
@JaredBusch said
This does not matter FFS, forget about AD.
He said there is another DC. How does it not matter?
It only matters if that other DC is also a DNS and DHCP server.
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@BRRABill said in Domain Controller Down (VM):
@JaredBusch said
This does not matter FFS, forget about AD.
He said there is another DC. How does it not matter?
Because this is a DHCP/DNS down issue. not an AD down issue.
This has nothing to do with DC replication.
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@coliver said in Domain Controller Down (VM):
@BRRABill said in Domain Controller Down (VM):
@JaredBusch said
This does not matter FFS, forget about AD.
He said there is another DC. How does it not matter?
It only matters if that other DC is also a DNS and DHCP server.
And this is not possible in a 2003/2008 environment. DHCP redundancy was only added in 2012 R2 (maybe 2012).
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@wirestyle22 is the VMDK there?
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@BRRABill it is broke because almost certainly his DHCP scope is only handing out the down DNS server as a DNS for the LAN.
