Sam McGeown

Sam is an experienced senior consultant who specializes in network virtualization.  His technical experience includes design, development and implementation of cloud solutions, network function virtualisation and the software defined datacentre. Sam specialises in automation of network virtualisation for cloud infrastructure, enabling public cloud solutions for service providers and private or hybrid cloud solutions for the enterprise.

Sam is currently working for VMware

VCDX-CMA,  vExpert 2013-2019, vExpert NSX, vExpert VSAN, vExpert Cloud

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Articles

Written by Sam McGeown on 19/6/2019
Published under VMware, vSAN and Cloud Native
Following on from me recent post deploying Kubernetes with the NSX-T CNP, I wanted to extend my environment to make use of the vSphere Cloud Provider to enable Persistent Volumes backed by vSphere storage. This allows me to use Storage Policy to create Persistent Volumes based on policy. For example, I’m going to create two classes of storage, Fast and Slow - Fast will be vSAN based and Slow will be NFS based.
Written by Sam McGeown on 12/6/2019
Published under NSX, VMware and Cloud Native
I’ve done a fair amount of work learning VMware PKS and NSX-T, but I wanted to drop down a level and get more familiar with the inner workings for Kubernetes, as well as explore some of the newer features that are exposed by the NSX Container Plugin that are not yet in the PKS integrations. The NSX-T docs are…not great, I certainly don’t think you can work out the steps required from the official NCP installation guide without a healthy dollop of background knowledge and familiarity with Kubernetes and CNI.
Written by Sam McGeown on 23/5/2019
Published under NSX and VMware
I ran into this UI bug the other day when I was trying to enable route redistribution on an Edge in a Secondary site of a cross-vCenter NSX deployment. The Edge itself was deployed correctly, and configured to peer with a physical northbound router, however when I attempted to configure the route redistribution I was unable to do so. Fortunately, the solution was simple - use the API. Perform a GET operation to retrieve the current BGP configuration GET https://{{nsxmanager}}/api/4.
Written by Sam McGeown on 11/4/2019
Published under Community and Cloud Native
When I started my blog back in May 2007 (12 years ago!) I was running Wordpress, then switched to DotNetNuke, then BlogEngine, then finally back to Wordpress - which I’ve used since 2010. Today I’ve cut over to a new architecture based on Hugo and hosted on AWS using a combination of Route53, Cloudfront and S3. Why the change? If it ain’t broke… You may well ask why I’ve made the move, or you may not…I’m going to tell you anyway…
Written by Sam McGeown on 14/3/2019
Published under VMware and vSphere
Most vSphere admins are more than comfortable with using Update Manager to download patches and update their environment, but few that I talk to actually know a huge amount about the Update Mangaer Download Service (UMDS). UMDS is tool you can install to download patches (and third party VIBs - I’ll get to that) for Update Manager and it’s useful for environments that don’t have access to the internet, or air-gapped, and also for environments with multiple vCenter Servers where you don’t necessarily want to download the same patch on every server.
Written by Sam McGeown on 8/2/2019
This series was originally going to be a more polished endeavour, but unfortunately time got in the way. A prod from James Kilby (@jameskilbynet) has convinced me to publish as is, as a series of lab notes. Maybe one day I’ll loop back and finish them… Requirements Routing Because I’m backing my vCloud Director installation with NSX-T, I will be using my existing Tier-0 router, which interfaces with my physical router via BGP.
Written by Sam McGeown on 21/9/2018
Just a quick post today to cover a new vRO action and workflow I’ve uploaded to GitHub that configures vCenter High Availability in the basic mode. This is based on William Lam’s excellent PowerShell module that does the same, but using vRO. I also hope to release a version for the advanced mode based on my PowerShell script in the near future. TL;DR - package is availabile on GitHub The workflow itself is pretty self explanatory, with my deployment action, which returns a VC:Task, and the standard “wait for a task to end” action.
Written by Sam McGeown on 24/7/2018
Published under Automation and Development
I recently started looking into ways of monitoring the temperature and humidity in my garage - for two reasons. Firstly, I have my lab workload cluster out there in the form of a Dell C6100, and I’ve noticed with the recent weather that the temperature in there gets…a bit warm. Secondly, I like to brew beer at home, and one of the keys to a good brew is consistent temperature!
Written by Sam McGeown on 13/7/2018
Published under vCloud Director and VMware
This series was originally going to be a more polished endeavour, but unfortunately time got in the way. A prod from James Kilby (@jameskilbynet) has convinced me to publish as is, as a series of lab notes. Maybe one day I’ll loop back and finish them… RabbitMQ for vCloud Director RabbitMQ High Availability and Load Balancing The vCloud Architecture Toolkit states RabbitMQ scales up to thousands of messages per second, which is much more than vCloud Director is able to publish.
Written by Sam McGeown on 13/7/2018
Published under NSX, vCloud Director and VMware
This series was originally going to be a more polished endeavour, but unfortunately time got in the way. A prod from James Kilby (@jameskilbynet) has convinced me to publish as is, as a series of lab notes. Maybe one day I’ll loop back and finish them… Prerequisites I’ve deployed a CentOS7 VM from my standard template, and configured the prerequisites as per my prerequisites post. Updates, NTP, DNS and SELinux have all been configured.