Technical Blog

Infrastructure insights, automation guides, and runbooks

Deep-dive upgrade guides, API automation, troubleshooting runbooks, and behind-the-scenes walkthroughs for VMware Cloud Foundation and Aria Suite.

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Patching VCF Services Runtime 9.1.0.0 to 9.1.1.0
VCF 9.1VMware Cloud FoundationGuides

Patching VCF Services Runtime 9.1.0.0 to 9.1.1.0

Patching the VCF Services Runtime component to 9.1.1.0, from prechecks through a five hour rolling replacement of every node, with the kubectl commands to follow it from the control plane.

3 min read0 views
High Availability Is Not Disaster Recovery
ArchitectureGuides

High Availability Is Not Disaster Recovery

The two get used interchangeably and they solve completely different problems. What separates them, the two numbers that define both, and a worked example of three failures where only one of them saves you.

7 min read0 views
Nobody Has 100% Uptime
ArchitectureGuides

Nobody Has 100% Uptime

Product teams keep asking for applications that never go down. Here is why 100% uptime is not a real target, what people usually mean when they ask for it, and how to decide whether zero downtime upgrades are worth what they cost.

9 min read0 views
The Human Nervous System: A Visual Guide
Health & Personal

The Human Nervous System: A Visual Guide

How the nervous system is put together, from the organisation chart down to a single neuron, with illustrations covering the CNS and PNS, action potentials, reflex arcs, and the sympathetic and parasympathetic branches.

5 min read0 views
What Is a Prion, in Plain English?
Health & Personal

What Is a Prion, in Plain English?

A prion is a protein folded the wrong way that forces its healthy neighbours to misfold too. What that means, why it matters for the human brain, and why the normal version of the protein is already sitting in your head right now.

7 min read0 views
VCF Automation RBAC Architecture Overview
VMware Cloud FoundationArchitecture

VCF Automation RBAC Architecture Overview

How role-based access control works in VCF Automation. The Provider, Organization and Project scopes, the built-in roles at each level, and a permission matrix comparing the four project roles.

3 min read0 views