VMware EUC Access Point appliance – Name resolution not working after deployment

As part of a project, I had to deploy a VMware EUC Access Point appliance. Nothing fancy, because the awesome VMware Access Point Deployment Utility makes it easy to deploy.

Unfortunately, the deployed Access Point appliance was not working as expected. When I tried to access my Horizon View infrastructure behind the Access Point appliance, I got a HTTP 504 error. The REST API interface was working. I was able to exclude invalid certificates, routing, or firewall policies. I re-deployed the appliance using the the IP address of the connection server, instead of the FQDN. And this worked… I checked the name resolution with nslookup and the name resolution failed. So that was probably the problem.

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VMware EUC Access Point appliance – Name resolution not working after deployment
5 (100%) 3 votes

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Important foot note: Windows 10 Enterprise LTSB 2016 requires a new KMS host key

Today, I have stumbled upon a fact that is worth being documented.

TL;DR: Use the “Windows Srv 2016 DataCtr/Std KMS” host key (CSVLK), if you want to activate Windows 10 Enterprise LTSB 2016 using KMS. Or use AD-based activation. For more information read the blog post of the Ask the Core Team: Windows Server 2016 Volume Activation Tips.

A customer wants to deploy Windows 10 Enterprise LTSB 2016. A Windows Server 2012 R2 is acting as KMS host, and successfully activates Windows Server 2012 R2 and Microsoft Office 2013 Professional Plus. The “Windows Srv 2012R2 DataCtr/Std KMS for Windows 10” CSVLK was successfully installed. Nevertheless, the “current count” value does not increase. The client logged the event 12288:

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Important foot note: Windows 10 Enterprise LTSB 2016 requires a new KMS host key
5 (100%) 5 votes

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Fight the chaos: Design your toolbox properly

You need tools and methods to accomplish your daily tasks. No one will deny this insight.

I would like to give you an insight into my box of tools and methods. These tools and methods work for me, but they do not have to work for you. The design of your personal toolbox depends on your job.

Depending on who you ask, my job role consists of several roles: Currently, I am working as a consultant, head of the business unit, pre-sales consultant and technical account manager. That’s what you get when working in a very small company… And because of these different roles, my personal toolbox may differ from yours.

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Fight the chaos: Design your toolbox properly
5 (100%) 5 votes

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HPE ProLiant PowerShell SDK

Some days ago, my colleague Claudia and I started to work on a new project: A greenfield deployment consisting of some well known building blocks: HPE ProLiant, HPE MSA, HPE Networking (now Aruba) and VMware vSphere. Nothing new for us, because we did this a couple times together. But this led us to the idea, to automate some tasks. Especially the configuration of the HPE ProLiants: Changing BIOS settings and configuring the iLO.

Do not automate what you have not fully understood

Some of the wisest words I have ever said to a customer. Modifying the BIOS and iLO settings is a well understood task. But if you have to deploy a bunch of ProLiants, this is a monotonous, and therefore error prone process. Perfect for automation!

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HPE ProLiant PowerShell SDK
5 (100%) 4 votes

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Enable IPv6 SLAAC on HPE OfficeConnect 1920 switches

The HPE OfficeConnect 1920 switch series is designed for SMBs. The switch is perfect for small environments, that require features like VLANs, routing or 802.1x. This switch is smart-managed, so it has “only” a web interface and only a limited CLI.

I have two switches in my lab: A 1910-8G and the successor, a 1920-24G. Although the device supports IPv6, it doesn’t support SLAAC (Stateless Address Autoconfiguration) by default. The switch does not send router advertisements (RA). I’m using IPv6 in my lab (Stateless DHCPv6 + SLAAC), so the missing RAs were a problem for me, or at least, annoying. Fortunately you can change the default behaviour.

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Enable IPv6 SLAAC on HPE OfficeConnect 1920 switches
4.86 (97.14%) 7 votes

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VCP7-DTM certification beta exam experience

Nearly a month ago, a tweet caught my attention:

These beta exams are a cost-effective way to achieve certifications. The last beta exam I took, was the VCP6-DCV beta. Because I already had the VCP6-DTM on my to-do list, the new VCP7-DTM beta exam was released just in the right moment.

As already mentioned in the blog post of the VMware Education and Certification Blog, there are primarly three reasons to take this beta exam:

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VCP7-DTM certification beta exam experience
4.67 (93.33%) 3 votes

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Why I moved from NFS to vSAN… and why it went wrong

I wanted to retire my Synology DS414slim, and switch completely to vSAN. Okay, no big deal. Many folks use vSAN in their lab. But I’d like to explain why I moved to vSAN and why this move failed. I think some of my thoughts are also applicable for customer environments.

So far, I used a Synology DS414slim with three Crucial M550 480 GB SSDs (RAID 5) as my main lab storage. The Synology was connected with two 1 GbE uplinks (LAG) to my  network, and each host was connected with 4x 1 GbE uplinks (single distributed vSwitch). The Synology was okay from the capacity perspective, but the performance was horrible. RAID 5, SSDs and NFS were not the best team, or to be precise, the  CPU of the Synology was the main bottleneck.

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Why I moved from NFS to vSAN… and why it went wrong
5 (100%) 4 votes

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Replacing an expired lookup service SSL certificate on a vSphere PSC

A few days ago, I ran into a very nasty problem. Fortunately, it was in my lab. Some months ago, I replaced the certificates of my vCenter Server Appliance (VCSA), and I’ve chosen to use the VMware Certificate Authority (VMCA) as a subordinate of my AD-based enterprise CA. The VMCA was used as intermediate CA. The certificates were replaced using the  vSphere 6.0 Certificate Manager (/usr/lib/vmware-vmca/bin/certificate-manager), and I followed the instructions of KB2112016 (Configuring VMware vSphere 6.0 VMware Certificate Authority as a subordinate Certificate Authority).

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Replacing an expired lookup service SSL certificate on a vSphere PSC
5 (100%) 6 votes

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HPE Data Protector 9.08 is available

3 days ago, on 13th October 2016, HPE has released patch bundle 9,08 for Data Protector 9. A patch bundle isn’t a directly installable version, instead it’s a bundle of patches and enhancements for a specific version of Data Protector, in this case Data Protector 9.

Beside fixes for discovered problems, a patch bundle includes also enhancements. There are some enhancements in this patch bundle, that have caught my attention particularly.

QCCR2A64053: Support for object copy of file system data to Microsoft Azure. Data Protector now supports the creation of a special backup device, which can be used together with Data Protector object copies, to copy Data Protector file system backups to Azure Backup Vaults. This is an easy way to create copies of important data on Microsoft Azure.

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HPE Data Protector 9.08 is available
5 (100%) 1 vote

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I’m routing on the edge…

In my last post (Routed Port vs. Switch Virtual Interface (SVI)), I have mentioned a consequence of using routed ports to interconnect access and core switches:

You have to route the traffic on the access switches.

Routing on the network access, the edge of the network, is not a question of performance. It is more of a management issue. Depending on the size of your network, and the number of subnets, you have to deal with lots of routes. And think about the effort, if you add, change or remove subnets from your network. This is not what you want to do with static routes. You need a routing protocol.

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I’m routing on the edge…
5 (100%) 5 votes

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