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Complete vSphere with Tanzu homelab with just 32GB of memory!

11.09.2020 by William Lam // 43 Comments

Since the release of vSphere 7.0 Update 1, the demand and interests from the community on getting hands on with vSphere with Tanzu and the new simplified networking solution, has been non-stop. Most folks are either upgrading their existing homelab or looking to purchase new hardware that can better support the new features of the vSphere 7.0 release.

Although vSphere with Tanzu now has a flavor that does not require NSX-T which helps reduces the barrier on getting started, it still has some networking requirements which may not be easily met in for all lab environments. In fact, this was actually the primary reason I had started to look into this since my personal homelab network is very basic and I do not have nor want a switch that can support multiple VLANs, which is one of the requirements for vSphere with Tanzu.

While investigating for a potential solution, which included way too MANY hours of debugging and troubleshooting, I also thought about the absolute minimal amount of resources I could get away with after put everything together. To be clear, my homelab is comprised of a single Supermicro E200-8D which has 128GB of memory and that has served me well over the years and I highly recommend it for anyone that can fit that into their budget. With that said, I did set out with a pretty aggressive goal of using something that is pretty common in VMware homelabs which is an Intel NUC and with just 32GB of memory.

UPDATE (07/02/24) - As of vSphere 8.0 Update 3, you no longer have the ability to configure a single Supervisor Control Plane VM using the minmaster and maxmasters parameters, which have also been removed from /etc/vmware/wcp/wcpsvc.yaml in favor of allowing users to control this configuration programmatically as part of enabling vSphere IaaS (formally known as vSphere with Tanzu). The updated vSphere IaaS API that allows users to specify number of Supervisor Control Plane VM will not be available until the next major vSphere release. While this regressed capability is unfortunate, it was also not an officially supported configuration and for users who wish to specify the number of Supervisor Control Plane VM using YAML method, you will need to use an earlier version of vSphere.

[Read more...]

Categories // Home Lab, Kubernetes, VMware Tanzu, vSphere 7.0 Tags // HAProxy, Intel NUC, Kubernetes, vSphere Kubernetes Service

Quick Tip - Rebooting VCSA causes vSphere with Tanzu to show ESXi hosts not licensed for Workload Management

11.08.2020 by William Lam // 12 Comments

I had just setup a new vSphere with Tanzu environment running on my Intel NUC for an upcoming blog post and after rebooting the vCenter Server Appliance (VCSA), I had noticed the Workload Management UI threw the following licensing error:

None of the hosts connected to this vCenter are licensed for Workload Management.

This was quite strange since both the ESXi host and VCSA was just installed less than a day ago which I was using the default 60 day evaluation that is automatically built in.

The even weirder thing was that I was still able perform operations using the Workload Management APIs, so I figured this must be a vSphere UI bug but could not find a way to get the UI to display. After reaching out to some folks internally, a suggestion was given on using either incognito mode or another browser and to my surprise, that fixed the problem! I suspect there is some cookie that was set during the initial Workload Management enablement when going through the evaluation workflow which now causes this unexpected early check for licensing.

I have already filed an internal bug but if you do hit this problem, simply clear your cookies for the the VCSA and the Workload Management UI will not properly display again.

Categories // VMware Tanzu Tags // vSphere Kubernetes Service

TKG Demo Appliance on VMware Cloud on DellEMC

11.05.2020 by William Lam // Leave a Comment

We have been getting interests from customers on wanting to run Tanzu Kubernetes Grid (TKG) on our VMware Cloud on DellEMC (VMConDellEMC) offering and I was asked to see if my Tanzu Kubernetes Grid (TKG) Demo Appliance would also work on this VMware Cloud solution, especially as it works great on both VMware Cloud on AWS as well as existing premises vSphere 6.7 Update 3 or later environments.

With the help from our VMConDellEMC team, I got access to an SDDC and was able to validate that everything works as outlined in my TKG workshop guide. I have also updated the pre-req documentation to include a specific section for setting up VMConDellEMC SDDC, most of which is similiar to existing networking requirements. Once you have your customer uplink network configured to your VMConDellEMC SDDC, you will be able to reach the TKG Demo Appliance running on the NSX-T Segment. The thing about the setup is that TKG Demo Appliance is built in an air-gap fashion, so no internet access is required, which by default, the TKG CLI will assume. This is great way to quickly get started with TKG and playing with Kubernetes!


This was actually my first time using VMConDellEMC and I thought I would push the limits a bit and deploying a slightly larger TKG Workload Cluster than I normally would, especially since I got access to a 5-Node SDDC 😀

[Read more...]

Categories // VMware Cloud Tags // VMware Cloud, VMware Cloud on Dell EMC

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William is Distinguished Platform Engineering Architect in the VMware Cloud Foundation (VCF) Division at Broadcom. His primary focus is helping customers and partners build, run and operate a modern Private Cloud using the VMware Cloud Foundation (VCF) platform.

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