Tag: syndicated

This is part of my series on building a virtual lab for use with SQL Server and Windows. You can see the entire series here: Building a Virtual Lab with Hyper-V.

The big thing in setting up a domain is to enable you to connect multiple machines together, experiment with things like Powershell Remoting, AlwaysOn, etc.

There are a couple things you need to do here. The first is to install a domain controller on one of the VMs, and then you need to join the remaining computers to the domain. This isn’t that hard, and I’ll show you two ways to do this: the GUI and PoSh.

Create a Domain Controller

I followed instructions to build a domain from TheSQLPro, since that was the first, and simplest instruction I had. I connected to my ServerCore installation named DenverDC and ran this:

Install-windowsfeature -name AD-Domain-Services

Then

Install-ADDSForest –DomainName “SSCLAB.LOCAL” -DomainMode Win2012 -DomainNetbiosName “SSCLAB” -ForestMode Win2012

I entered both of these from Powershell and restarted the VM.  I then ran a

Get-ADDomain

and as you can see, I have a domain set up on this machine.

Joining the Domain from the GUI

The first step is to be sure that you have connectivity between your machine and the DC. I had to ensure I could ping back and forth, both by IP and computer name. I also made sure to set my DNS to the domain controller. In my case, this was the DenverDC at 192.168.1.200.

Once I was fairly sure I had networking down, I went to the control panel on one of the machines. I went to the computer properties and clicked the "Change Settings" link.

From there, I had the basic properties. As you can see below, I was in a workgroup. The first thing to do is click the "change" button.

Once that’s done, you have the workgroup/domain set of radio buttons. I clicked the domain item and entered the name of my domain.

You get a credential box where you need to enter credentials. I believe these are the DC level credentials. For this lab, I have the domain and local administrators all using the same user/password (Administrator/mypassword) and entered that.

If networking is working, it should take a minute and then you’ll get this:

As soon as you click OK, you’ll get told this requires a reboot. It does, so restart.

Once you restart, if you go back, you should see that you are in the domain in the computer properties.

Joining from Powershell

I found this cmdlet that worked for me.

Add-Computer -DomainName "SSCLab.Local"

Once I typed this in, I got a dialog box asking me to enter the administrator credentials. I did that and it worked. I had to reboot with a restart-computer.

And we’re working

Errors

I did get an error on one of my VMs. It was error 0x21C4 on a Server Core installation. When I looked that up, I got a duplicate SID error. I had sysprep’d the machines, but perhaps I broke something. In any case, I re-ran sysprep, reset the network config, renamed the computer, and then joined the domain as noted above.

This is part of a series where I set up a virtual lab for testing and misc. work. The other parts in the series are here: Building a Virtual Lab with Hyper-V.

Once I had the machine up and running, I knew I needed to get the networking setup. One of the things I’ll do is do some clustering tests, and for that, I need to have static IP addresses. I’m an older, IPv4 guy, so that’s what I’ll use here.

I decided to put all my machines in the 192.168.1.x space. I’ll use these addresses:

• DenverDC – 192.168.1.200
• Broncos – 192.168.1.201
• Nuggets – 192.168.1.202
• Rockies – 192.168.1.203
• Avalanche – 192.168.1.204

I’ll deal with the client machine when I get there. For now this is what I need to worry about.

The machines are set up and passwords changed. I now need to start them and get networking configured. I googled and found this TechNet article on using PowerShell to configure a NIC. There’s also the Configure a Core Server. I know you can use sconfig to do this easily, but I wanted to see how hard it is in PoSh. In the Standard edition, it’s easy to use the GUI as well.

First I needed to know what adapters I have. I ran

Get-NetAdapter

This told me my main adapter was “Ethernet 2”. So I ran this:

$netadapter = Get-NetAdapter -Name “Ethernet 2”

The first step is to remove DHCP. You’d do this by changing a radio button on the adapter settings. In this case, we do it with PowerShell.

$netadapter | Set-NetIPInterface -DHCP Disabled

Next we want to set up our IP address. In my case, I’m going to use the 10.10.10 address space.

$netadapter | New-NetIPAddress -AddressFamily IPv4 -IPAddress 192.168.1.200 -PrefixLength 24 -Type Unicast -DefaultGateway 192.168.1.1

Once that is done, we can then look at DNS. In this case, I’m going to point it to my gateway, which doesn’t really resolve to anything (yet).

Set-DnsClientServerAddress -InterfaceAlias “Ethernet 2” -ServerAddresses 192.168.1.200

I repeat this for all my servers, getting them all set up with their proper IP addresses. Once I’m done, I have 5 servers running with the IPs above.

However none of them can ping each other. That’s strange, but not unexpected. The mindset to increase security by default is likely to blame. I don’t know what the exploits that can come through ping (DOS I guess), but I know more and more companies avoid allowing ping responses.

Turn off the firewall

I decide that I need to turn off the firewall to check. Since I have 2 Standard installations and 4 Core installations, I go to the Standard ones first and use the GUI to kill the firewall for my networks. It was at this point that I realized that by default my connections saw the network as public connections, not private.

I turn off the public connection firewall and pings work from one of the Core servers. Then I turn that on and disable the private firewall. Pings fail.

Now I know what to do. First, I use a security change in the GUI to set my Server with the Local Security Policy app in Windows. Once this is done, I set things to private, disable that firewall and verify pings work. I know this works, and now I’m ready to change the other servers.

I find a script on MSDN Blogs that shows me how to do this in PoSh. It’s a strange script, and it doesn’t give any results, but it seemed to work.

$networkListManager = [Activator]::CreateInstance([Type]::GetTypeFromCLSID([Guid]”{DCB00C01-570F-4A9B-8D69-199FDBA5723B}”))
$connections = $networkListManager.GetNetworkConnections()
# Set network location to Private for all networks
$connections | % {$_.GetNetwork().SetCategory(1)}

Once I ran this, I then needed to turn off the firewall. I found this link and then ran this command.

netsh advfirewall set private state off

That worked, and then you can see my ping worked.

The top image above is from the machine I was working on. The bottom one shows the ping failing from my SQL machine to the DC, and then working once I’d disabled the firewall for the private network.

Update: I originally wanted to work in the 10.x.x.x space, but I kept confusing myself, so I moved all the machines to the 192.168.1.x network.

Rinse, repeat for all machines. Eventually I have every machine pinging every other machine and able to connect.

Networking working.