|By Tommy Patterson||
|January 25, 2013 11:00 AM EST||
Migrating traditional client/server applications to Windows Azure Virtual Machines is what Don Noonan does every day. The majority of these workloads use Active Directory Domain Services as their authentication provider, or in other words, classic Windows authentication. In this post Don walks us through the best practices high level architecture and the basic building blocks of creating a private forest within Windows Azure.
If Active directory is not available, you better be
As we all know, if AD is down so is your app. Imagine setting up a single domain controller responsible for both name resolution (DNS) and authentication. You just created another synonym for single-point-of-failure. At a minimum you should deploy two (2) domain controllers, and they should be created as part of an Availability Set. This will ensure that at least one (1) domain controller is always available for authentication and name resolution requests. If you’re considering saving a few bucks by deploying a single domain controller in non-production environments, let me save you a few more. The first call you get from development or QA will cost you at least 6 months of compute. Telling a dozen upset people on a conference call that you wanted to save the company $50/month will sound pretty bad…
A private forest for me? oh you shouldn’t have
There are currently two major scenarios for providing Windows authentication in Windows Azure Virtual Machines:
- Deploy a new private forest
- Extend an existing on-premise forest
In this blog we’ll cover deploying a new private forest. Here is a quick Visio of a classic 3-tier application (using Windows Azure features) to get us started:
As you can see, we have a management subnet that contains our domain controllers, as well as separate database and application “tiers”.
Stop Talking and Start Deploying
As with any new deployment to Windows Azure Virtual Machines, you will perform the following high-level steps:
- Create an affinity group (See Bob Hunt’s Article in the Series)
- Create a virtual network (See Bob Hunt’s Article in the Series)
- Create a storage account (See Kevin Remde’s Article in the Series)
- Create virtual machines (See Tommy Patterson’s Article in the Series)
While creating the virtual network, you will need to specify that the domain controllers will also be providing name resolution for all of the servers in your deployment. You can do this in the Windows Azure management portal as well as through the management web service. Here is how you do this via PowerShell:
Specifying custom DNS servers using PowerShell
Example command line:
Set-AzureVNetConfig –ConfigurationPath “C:\networkConfiguration.xml”
Contents of C:\networkConfiguration.xml:
<DnsServer name="skydc01" IPAddress="10.1.1.4" />
<DnsServer name="skydc02" IPAddress="10.1.1.5" />
<VirtualNetworkSite name="skyvn" AffinityGroup="skyag">
<DnsServerRef name="skydc01" />
<DnsServerRef name="skydc02" />
In the example above, the IP addresses used assume the domain controllers are the first virtual machines created on the Management subnet. Let’s make sure that’s true by creating them now:
Creating Highly Available Domain Controllers using PowerShell
Relevant excerpts from createService.ps1:
$instanceSize = 'Small'
$imageName = 'MSFT__Win2K8R2SP1-Datacenter-201210.01-en.us-30GB.vhd'
$subnetName = 'Management'
$availabilitySetName = 'skydc'
$password = '@skyDc01'
$vmName = 'skydc01'
$skydc01 = New-AzureVMConfig -Name $vmName -AvailabilitySetName $availabilitySetName -ImageName $imageName -InstanceSize $instanceSize |
Add-AzureProvisioningConfig -Windows -Password $password |
$password = '@skyDc02'
$vmName = 'skydc02'
$skydc02 = New-AzureVMConfig -Name $vmName -AvailabilitySetName $availabilitySetName -ImageName $imageName -InstanceSize $instanceSize |
Add-AzureProvisioningConfig -Windows -Password $password |
Once you’ve created the servers, you will need to make them domain controllers, also known as promotion.
Promoting a Server to a Domain Controller using DCPROMO or PowerShell
Depending on what operating system you have chosen, you can automate forest creation via command line. In the following examples, be sure to replace DOMAIN_HERE with the desired domain name, and replace passwords with those corresponding to temporary password you assigned to the local administrator account on the first (primary) server.
Windows Server 2008 R2 – Create a new forest using DCPROMO
Contents of C:\primaryDomainController.txt:
; New forest promotion
Windows Server 2012 – Create a new forest using PowerShell
Contents of C:\primaryDomainController.ps1:
-DatabasePath "C:\Windows\NTDS" `
-DomainMode "Win2012" `
-DomainName "[DOMAIN_HERE].com" `
-DomainNetbiosName "DOMAIN_HERE" `
-ForestMode "Win2012" `
-LogPath "C:\Windows\NTDS" `
-SysvolPath "C:\Windows\SYSVOL" `
Part of your homework will be to create the second domain controller in the new forest. There will need to be slight changes made to the answer files above.
Creating the rest of servers required by your application seems like the logical next step. However, there are a handful of important tasks I like to do prior to creating ANY additional virtual machines:
Create domain user accounts that will be used for future system administration.
Create containers for major objects such as server computer accounts.
Create core group policies for significant items such as:
- Remote Desktop Services – Enable Keep-Alives (article posted previously at Skylera)
- User Account Control
- Windows Firewall
- Windows Update
When creating a private forest, consider the amount of administrative overhead involved vs. level of isolation. For example, you may want to have a single forest for all pre-production environments so that you only need to perform user account tasks in one place. This is easy to do in Windows Azure.
Written by Don Noonan (Don's Blog at Skylera)
Edited by Tommy Patterson (Tommy's Blog on Virtuallycloud9.com)
Be Sure to Read Up on the Rest of the Series for 31 Days of Servers in the Cloud!
Verizon Enterprise Solutions is simplifying the cloud-purchasing experience for its clients, with the launch of Verizon Cloud Marketplace, a key foundational component of the company's robust ecosystem of enterprise-class technologies. The online storefront will initially feature pre-built cloud-based services from AppDynamics, Hitachi Data Systems, Juniper Networks, PfSense and Tervela. Available globally to enterprises using Verizon Cloud, Verizon Cloud Marketplace provides a one-stop shop fo...
Dec. 20, 2014 09:00 AM EST Reads: 2,476
AppZero has announced that its award-winning application migration software is now fully qualified within the Microsoft Azure Certified program. AppZero has undergone extensive technical evaluation with Microsoft Corp., earning its designation as Microsoft Azure Certified. As a result of AppZero's work with Microsoft, customers are able to easily find, purchase and deploy AppZero from the Azure Marketplace. With just a few clicks, users have an Azure-based solution for moving applications to the...
Dec. 20, 2014 09:00 AM EST Reads: 1,389
“In the past year we've seen a lot of stabilization of WebRTC. You can now use it in production with a far greater degree of certainty. A lot of the real developments in the past year have been in things like the data channel, which will enable a whole new type of application," explained Peter Dunkley, Technical Director at Acision, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 20, 2014 08:00 AM EST Reads: 2,001
SYS-CON Events announced today Isomorphic Software, the global leader in high-end, web-based business applications, will exhibit at SYS-CON's DevOps Summit 2015 New York, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Isomorphic Software is the global leader in high-end, web-based business applications. We develop, market, and support the SmartClient & Smart GWT HTML5/Ajax platform, combining the productivity and performance of traditional desktop software ...
Dec. 20, 2014 07:00 AM EST Reads: 1,438
SYS-CON Events announced today that IDenticard will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. IDenticard™ is the security division of Brady Corp (NYSE: BRC), a $1.5 billion manufacturer of identification products. We have small-company values with the strength and stability of a major corporation. IDenticard offers local sales, support and service to our customers across the United States and Canada...
Dec. 20, 2014 07:00 AM EST Reads: 2,554
SYS-CON Events announced today that AIC, a leading provider of OEM/ODM server and storage solutions, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. AIC is a leading provider of both standard OTS, off-the-shelf, and OEM/ODM server and storage solutions. With expert in-house design capabilities, validation, manufacturing and production, AIC's broad selection of products are highly flexible and are conf...
Dec. 20, 2014 07:00 AM EST Reads: 2,364
Leysin American School is an exclusive, private boarding school located in Leysin, Switzerland. Leysin selected an OpenStack-powered, private cloud as a service to manage multiple applications and provide development environments for students across the institution. Seeking to meet rigid data sovereignty and data integrity requirements while offering flexible, on-demand cloud resources to users, Leysin identified OpenStack as the clear choice to round out the school's cloud strategy. Additional...
Dec. 20, 2014 06:30 AM EST Reads: 2,660
The BPM world is going through some evolution or changes where traditional business process management solutions really have nowhere to go in terms of development of the road map. In this demo at 15th Cloud Expo, Kyle Hansen, Director of Professional Services at AgilePoint, shows AgilePoint’s unique approach to dealing with this market circumstance by developing a rapid application composition or development framework.
Dec. 20, 2014 06:00 AM EST Reads: 1,480
The cloud is becoming the de-facto way for enterprises to leverage common infrastructure while innovating and one of the biggest obstacles facing public cloud computing is security. In his session at 15th Cloud Expo, Jeff Aliber, a global marketing executive at Verizon, discussed how the best place for web security is in the cloud. Benefits include: Functions as the first layer of defense Easy operation –CNAME change Implement an integrated solution Best architecture for addressing network-l...
Dec. 20, 2014 05:00 AM EST Reads: 1,950
“We help people build clusters, in the classical sense of the cluster. We help people put a full stack on top of every single one of those machines. We do the full bare metal install," explained Greg Bruno, Vice President of Engineering and co-founder of StackIQ, in this SYS-CON.tv interview at 15th Cloud Expo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 19, 2014 11:45 PM EST Reads: 1,958
The major cloud platforms defy a simple, side-by-side analysis. Each of the major IaaS public-cloud platforms offers their own unique strengths and functionality. Options for on-site private cloud are diverse as well, and must be designed and deployed while taking existing legacy architecture and infrastructure into account. Then the reality is that most enterprises are embarking on a hybrid cloud strategy and programs. In this Power Panel at 15th Cloud Expo (http://www.CloudComputingExpo.com...
Dec. 19, 2014 11:30 AM EST Reads: 2,966
"BSQUARE is in the business of selling software solutions for smart connected devices. It's obvious that IoT has moved from being a technology to being a fundamental part of business, and in the last 18 months people have said let's figure out how to do it and let's put some focus on it, " explained Dave Wagstaff, VP & Chief Architect, at BSQUARE Corporation, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4-6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 19, 2014 11:00 AM EST Reads: 2,433
The move in recent years to cloud computing services and architectures has added significant pace to the application development and deployment environment. When enterprise IT can spin up large computing instances in just minutes, developers can also design and deploy in small time frames that were unimaginable a few years ago. The consequent move toward lean, agile, and fast development leads to the need for the development and operations sides to work very closely together. Thus, DevOps become...
Dec. 19, 2014 10:00 AM EST Reads: 2,589
"Our premise is Docker is not enough. That's not a bad thing - we actually love Docker. At ActiveState all our products are based on open source technology and Docker is an up-and-coming piece of open source technology," explained Bart Copeland, President & CEO of ActiveState Software, in this SYS-CON.tv interview at DevOps Summit at Cloud Expo®, held Nov 4-6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 19, 2014 09:00 AM EST Reads: 2,565
SYS-CON Events announced today that Windstream, a leading provider of advanced network and cloud communications, has been named “Silver Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9–11, 2015, at the Javits Center in New York, NY. Windstream (Nasdaq: WIN), a FORTUNE 500 and S&P 500 company, is a leading provider of advanced network communications, including cloud computing and managed services, to businesses nationwide. The company also offers broadband, p...
Dec. 19, 2014 07:00 AM EST Reads: 2,792
The Internet of Things is not new. Historically, smart businesses have used its basic concept of leveraging data to drive better decision making and have capitalized on those insights to realize additional revenue opportunities. So, what has changed to make the Internet of Things one of the hottest topics in tech? In his session at @ThingsExpo, Chris Gray, Director, Embedded and Internet of Things, discussed the underlying factors that are driving the economics of intelligent systems. Discover ...
Dec. 19, 2014 06:30 AM EST Reads: 2,808
DevOps Summit 2015 New York, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that it is now accepting Keynote Proposals. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development cycles that produce software that is obsolete...
Dec. 18, 2014 09:45 PM EST Reads: 1,723
“DevOps is really about the business. The business is under pressure today, competitively in the marketplace to respond to the expectations of the customer. The business is driving IT and the problem is that IT isn't responding fast enough," explained Mark Levy, Senior Product Marketing Manager at Serena Software, in this SYS-CON.tv interview at DevOps Summit, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
Dec. 18, 2014 08:00 PM EST Reads: 1,966
Mobile commerce traffic is surpassing desktop, yet less than 20% of sales in the U.S. are mobile commerce sales. In his session at 15th Cloud Expo, Dan Franklin, Segment Manager, Commerce, at Verizon Digital Media Services, defined mobile devices and discussed how next generation means simplification. It means taking your digital content and turning it into instantly gratifying experiences.
Dec. 18, 2014 12:00 PM EST Reads: 1,847