WilliamLam.com

Automated enablement of vSphere with Tanzu using vSphere Zones in vSphere 8

by // Leave a Comment

vSphere Zones is just one of the the many exciting new Tanzu capabilities that is now part of vSphere 8. My buddy Cormac Hogan did a nice write-up on vSphere Zones, which I highly recommend folks check it out get more details.

This blog post will focus on using the new vCenter Server REST API to enable vSphere with Tanzu using the new vSphere Zones feature in vSphere 8.


For those interested in running a lean and minimal setup in their homelab, you can deploy a fully functional vSphere with Tanzu environment with just 32GB of memory and this is still applicable for vSphere 8!

[Read more...]

Using vSphere Lifecycle Manager (vLCM) API to patch group of ESXi hosts

by // 15 Comments

An interesting vSphere Lifecycle Manager (vLCM) question that has already come up a few times in the past two weeks is whether vLCM can remediate (patch/upgrade) a specific group of ESXi host(s)?

Today, there are two ways in which vLCM can remediate ESXi hosts within a vSphere Cluster. The first is to simply remediate all ESXi hosts within a vSphere Cluster using the Remediate All option.


If a user wishes to exclude specific ESXi host(s) from being remediated, then the only other option is to manually remediate each individual host. To do so, select an ESXi host from the list and then use the Remediate option in the Actions menu as shown in the screenshot below.


For a small environment, manual remediation might be okay for those willing to click through the vSphere UI but it is certainly less than ideal and you are also not taking advantage of the automation and orchestration that vLCM provides in the first place.

Luckily, there is a third option which is to use the vLCM REST API to specify the desired list of ESXi host(s) that want to patch/upgrade and best of all, this is fully automated!

[Read more...]

vSphere Datasets - New Virtual Machine Metadata Service in vSphere 8

by // 1 Comment

Since the early days of Virtual Center and ESX, the only method for creating and sharing arbitrary metadata between the vSphere Management layer and the guest operating system was to use either guest variables (guestinfo) or the OVF runtime environment.

While both of these capabilities have enabled a ton of interesting use cases and have even inspired creative solutions such as this, this, this, this and this to just name a few, it certainly has its challenges and nuances from an end user experience perspective.

For example, the persistency or the non-persistency of guest variables solely depended on when it was applied to a Virtual Machine and the power state it was in, which can be very frustrating to discover for the first time and the inconsistent behavior for end users. The lack of security and access control in both guest variables and the OVF runtime environment also means the metadata could easily be overwritten or removed by users in either the vSphere Management layer or guest operating system, making this challenging to scale for larger organizations.

This is why I am excited for vSphere 8 and the new vSphere Dataset feature!

[Read more...]